Engineered for high-performance suspension systems, King Shocks 2.5" ID coil springs are designed to withstand the rigorous demands of off-road racing and precision tuning. These springs provide the consistent rates and durability required to maintain vehicle ride height and handling characteristics under heavy cycling.

Whether used in a single-spring application or as part of a dual-rate coilover setup, these springs are manufactured to strict tolerances to ensure predictable performance. The 12-inch free length and 300lb spring rate allow for precise adjustment of suspension preload and compression travel.

• Internal Diameter (ID): 2.5 inches
• Free Length: 12 inches
• Spring Rate: 300 lbs/in
• Compatible with 2.5" body coilovers
• Manufacturer Part Number: SPR25-12-300

The Eibach ERS Torsion Release Bearing (TRB225) is a specialized suspension accessory designed to optimize race spring performance. By eliminating friction at the spring seat, this bearing allows for smoother and more consistent spring action through the entire range of deflection.

This kit effectively reduces the torsional binding that occurs during spring compression, which ensures more predictable spring rates and makes ride height adjustments significantly easier and more precise. Each assembly is designed to maintain linear spring behavior during heavy suspension cycling.

• Designed for springs with a 2.25 inch inside diameter
• Eliminates spring seat friction for easier ride height adjustment
• Reduces torsional binding for smoother, more consistent deflection
• Three-piece kit includes necessary plates and bearings
• Sold individually (one kit required per corner)
• Manufacturer Part Number: TRB225

The Eibach ERS 60mm ID Coupling Spacer (MPN: SPACER60) provides a precise interface for dual-spring racing suspension setups. Designed to securely connect a main spring with a tender or helper spring, this component ensures stable alignment and consistent performance throughout the suspension's travel.

Manufactured from lightweight, high-strength aluminum and finished with a durable anodized coating, these spacers are CNC precision-machined to maintain strict tolerances under demanding racing conditions. This spacer is a critical component for tuners looking to properly integrate multi-rate spring systems into their coilover assemblies.

• Connects ERS main springs to tender or helper springs
• Engineered for 60mm (2.36in) internal diameter spring systems
• CNC precision-machined for exact fitment and alignment
• Lightweight and durable anodized aluminum construction
• Manufacturer Part Number: SPACER60

The Eibach ERS 3.0-inch inside diameter Coilover Coupling Spacer (SPACER300) is engineered to securely connect a main spring with a tender or helper spring in a dual-rate suspension setup. These spacers are critical for maintaining proper spring alignment and preventing binding or overlap during high-load racing conditions, ensuring the suspension system operates predictably through its full range of travel.

Built to the exacting standards of the Eibach Race Spring system, each spacer is CNC precision-machined from lightweight, high-strength aluminum. The durable anodized finish provides long-term resistance against wear and corrosion in harsh track environments. This component serves as a reliable interface for any 3.0-inch ID spring configuration without adding unnecessary unsprung weight.

• Connects main and tender or helper springs in dual-rate coilover systems
• Precision CNC machined for accurate 3.0-inch inside diameter fitment
• Lightweight and durable anodized aluminum construction
• Maintains consistent spring alignment under compression
• Manufacturer Part Number: SPACER300

The Eibach ERS 2.50" ID Coilover Coupling Spacer is a precision-engineered component designed to facilitate dual-spring suspension setups. This coupling spacer allows for the secure and aligned connection of a main spring with a tender or helper spring, ensuring consistent performance and predictable spring rate transitions.

• Fits 2.50 inch inside diameter (ID) Eibach Race Springs (ERS).
• Connects main and tender (or helper) springs for dual-rate configurations.
• CNC precision-machined from high-strength aluminum for exact tolerances and fitment.
• Lightweight and durable anodized finish for superior corrosion resistance.
• Essential for maintaining spring alignment on the shock body during compression and rebound.
• Manufacturer Part Number: SPACER250

The Eibach ERS 2.25-inch Inside Diameter (ID) Coilover Spring Coupling Spacer is a critical component for fine-tuning dual-spring suspension systems. This spacer acts as a secure seat and coupler between a main spring and a tender or helper spring, ensuring proper alignment and a smooth transition during compression.

Manufactured from high-strength aluminum, each spacer is CNC precision-machined to maintain exact tolerances required for racing applications. The lightweight design is finished with a durable anodized coating to resist wear and corrosion in harsh track environments. This coupling spacer is an essential accessory for racers looking to optimize their spring stack performance.

• Specifically designed for 2.25-inch (57mm) inside diameter ERS springs
• Functions as a coupler between main and tender/helper springs
• CNC precision-machined for accurate spring seating
• Lightweight and durable anodized aluminum construction
• Part of the Eibach Race Spring (ERS) system
• Manufacturer Part Number: SPACER225

The Eibach ERS 2.50 in. ID Isolator (Delrin Seat Plate) is a precision-engineered race spring accessory designed to optimize suspension response. By providing a low-friction interface between the spring and the perch, this seat plate eliminates the torsional binding that occurs during spring deflection, ensuring your suspension maintains a consistent rate through its entire range of travel.

Constructed from lightweight and durable Delrin, the ISOLATOR250 is built to withstand the rigors of competitive racing while minimizing friction-induced stiction. This allows for smoother movement and more predictable handling on the track. This component is essential for racers looking to fine-tune their Eibach Race Spring (ERS) system for maximum efficiency.

• Reduces torsional binding by removing friction during spring deflection
• Ensures smoother and more consistent spring action through the full range of travel
• Engineered for use with 2.50 in. inside diameter (ID) springs
• Lightweight, high-durability Delrin construction
• Manufacturer Part Number: ISOLATOR250

The Eibach ERS 60mm ID Linear Tender Spring is a precision-engineered component of the Eibach Race Spring system, designed to maintain tension on the main spring when the suspension is fully unloaded. By filling the gap during suspension droop, this tender spring ensures the main spring remains properly seated on the perch, preventing dangerous displacement during aggressive driving or over rough surfaces.

Built with high-strength flat spring wire, the HELPER60 is optimized for maximum travel and an exceptionally low block height to minimize stack-up in high-performance coilover assemblies. As part of the ERS line, each spring is individually tested to meet the rigorous tolerances required for professional racing and fine-tuned handling dynamics.

• Manufacturer Part Number: HELPER60
• Inner Diameter (ID): 60mm
• Spring Type: Linear Tender/Helper Spring
• Material: Specialized flat wire for minimum block height and maximum travel
• Series: Eibach Race Springs (ERS)
• Testing: Individually tested for rate and dimensional accuracy

The Eibach ERS 3.00 in. ID Helper Spring is a precision-engineered component designed to maintain suspension integrity in professional racing applications. As part of the Eibach Race Spring (ERS) system, this helper spring serves the critical function of keeping the main spring securely seated against the perches when the suspension is fully unloaded or at full droop.

Manufactured from high-tensile flat spring wire, this helper spring is optimized for maximum travel and an exceptionally low block height. This compact design ensures it does not interfere with the main spring's stroke or contribute to premature coil bind. Each spring is individually tested to meet Eibach's rigorous tolerances for performance and reliability.

• Maintains Spring Position: Keeps the main coil spring properly indexed during suspension extension.
• Flat Wire Construction: Specifically designed for minimum block height and maximum usable travel.
• Versatile Application: Engineered for use with 3.00-inch inner diameter (ID) shocks, coilovers, and pull-bars.
• Individually Tested: Each unit is verified for consistent performance before leaving the factory.
• Manufacturer Part Number: HELPER300

The Eibach ERS 2.50 in. ID Helper Spring (HELPER250T) is a precision-engineered suspension component designed to maintain tension on the main spring when the suspension is fully unloaded. By keeping the main spring securely seated against the perches during full droop, this helper spring prevents misalignment and potential damage to the coilover assembly during aggressive driving or over rough terrain.

• Inner Diameter (ID): 2.50 in.
• Flat Wire Construction: Specifically designed to achieve maximum travel with a minimal block height, preserving the usable stroke of your suspension system.
• Reliable Seating: Prevents the main spring from shifting when the suspension reaches full extension.
• Quality Assurance: Each spring is individually tested to ensure consistent performance and rate accuracy.
• Race-Ready Design: Built for high-performance applications where suspension travel and reliability are critical.
• Part Number: HELPER250T

Maintain consistent suspension tension and handling predictability with the Eibach ERS 2.50" diameter coilover helper spring. Part of the Eibach Race Spring (ERS) system, this helper spring is specifically designed to keep the main spring properly seated against the spring perches when the suspension is fully unloaded or at full droop. This prevents spring play and potential misalignment during aggressive driving or over uneven track surfaces.

Manufactured using high-strength flat spring wire, the HELPER250 is engineered to provide maximum travel while maintaining a minimal block height. This specialized profile ensures that the helper spring does not interfere with the main spring's stroke or reduce the available travel of your coilover assembly. Each spring is individually tested to meet the rigorous tolerances required for professional racing and performance applications.

• Manufacturer Part Number: HELPER250
• Inside Diameter: 2.50 inches
• Material: Precision-engineered flat spring wire
• Design: Minimal block height for maximum suspension travel
• Application: Keeps main spring seated when suspension is unloaded
• Testing: Each unit is individually tested for quality assurance

The Eibach ERS 2.25in ID Helper Spring (MPN: HELPER225T) is a critical component for high-performance suspension systems, designed to maintain tension on the main spring when the suspension is fully unloaded. In racing applications where short main springs are used, this helper spring prevents the main spring from becoming unseated from its perches during full droop or when the vehicle is lifted, ensuring the suspension remains properly indexed.

Engineered with flat spring wire, this component provides maximum travel while maintaining a remarkably low block height. This specialized profile ensures that once the vehicle weight is applied, the helper spring compresses fully into a compact height, allowing for more usable stroke from your main spring and shock assembly. Like all components in the Eibach Race Spring (ERS) catalog, each spring is individually tested to ensure it meets strict performance tolerances.

• Inside Diameter: 2.25 inches
• Design: Flat wire construction for minimum block height and maximum travel
• Function: Keeps main spring seated when suspension is unloaded
• Quality Control: Each spring is individually tested for rate accuracy
• Series: Eibach Race Spring (ERS)
• Manufacturer Part Number: HELPER225T

The Eibach ERS (Eibach Race Spring) helper spring is a critical component for maintaining suspension integrity on competition and high-performance coilover systems. Designed for 2.25-inch diameter setups, this spring prevents the main spring from becoming unseated or dislodged from the spring perch when the suspension is fully unloaded or reaches full droop.

Engineered with a flat spring wire profile, this helper spring provides an exceptionally low block height to ensure it does not compromise the total available travel of your primary race spring. Each unit is individually tested to ensure it meets Eibach’s rigorous performance tolerances for racing applications.

• Maintains main spring seating during full suspension extension (droop)
• Flat wire construction for maximum travel and minimal block height
• Compatible with 2.25-inch (57mm) inner diameter coilover systems
• Individually tested for rate consistency and reliability
• Sold individually (one spring)
• Manufacturer Part Number: HELPER225

The Eibach ERS Bump Stop is a critical component for maintaining control in performance suspension systems. Designed to create a highly progressive, rising-rate effect, these stops manage the final inches of suspension travel to prevent harsh bottoming and damaging coil bind. This part is essential for racers looking to fine-tune secondary spring characteristics through the compression stroke.

Constructed from race-proven micro-cellular polyurethane elastomer, the EBS770060 provides significant deflection potential while maintaining its shape with near-zero lateral expansion. This ensures consistent performance and clearance even when the suspension is fully compressed under high aerodynamic or cornering loads.

• Material: High-grade micro-cellular polyurethane elastomer
• Engineered for secondary spring tuning and progressive rate compression
• High deflection capability with minimal lateral expansion
• Prevents coil bind and harsh mechanical bottoming in racing applications
• Manufacturer Part Number: EBS770060

The Eibach ERS Bump Stop (EBS770044) is a critical component for high-performance suspension tuning, designed to create a highly progressive, rising-rate effect as springs approach full travel. This prevents harsh bottoming and potential coil binding, acting as a secondary spring to maintain chassis control under extreme loads.

Constructed from race-proven micro-cellular polyurethane elastomer, these bump stops offer tremendous deflection potential with near-zero lateral expansion. This allows for precise fitment in tight spaces where traditional rubber stops might distort and interfere with other components. They are engineered to provide maximum tuning flexibility for various racing applications.

• Manufacturer Part Number: EBS770044
• Material: Race-proven micro-cellular polyurethane elastomer
• Compression Style: Progressive rising-rate characteristics
• Function: Acts as a secondary spring to prevent coil bind and bottoming
• Design Benefit: High deflection potential with minimal lateral expansion

Fits 2024-2026 INEOS Grenadier and 2025-2026 Quartermaster (Base, Fieldmaster, and Trialmaster models).

The Eibach Pro-Lift-Kit (MPN: E30-34-001-02-20) provides a functional suspension lift for the INEOS Grenadier without the compromises of spacer lifts or the complexity of full coilover systems. These front springs are precision-engineered to increase ground clearance and provide additional fender room for larger wheel and tire combinations while maintaining excellent on-road stability.

By utilizing the full range of suspension travel, this system avoids the increased stress on factory bushings and ball joints commonly associated with spacer lift blocks. Designed to work in conjunction with Eibach Pro-Truck shocks, these springs offer a balanced ride that excels in both technical off-road terrain and daily driving conditions.

• Increased ground clearance for improved off-road approach angles
• Precision-engineered for superior on-road handling and stability
• Maintains factory suspension geometry to reduce component wear
• Made in the U.S.A.
• Manufacturer Part Number: E30-34-001-02-20
• Sold as a pair

The Eibach ERS Coil Sleeve (CS5002) provides precision fine-tuning for spring block heights while serving as an effective NVH (Noise, Vibration, and Harshness) isolator. Engineered for high-performance suspension setups, this sleeve allows for critical travel adjustability without altering the spring's load characteristics or linear rate. By managing the block height, it helps eliminate frame drag when running softer spring rates, ensuring the suspension maintains its intended behavior under load.

• Manufacturer Part Number: CS5002
• Adjustability: Allows for fine-tuning of travel without spring rate change
• Isolator Function: Reduces NVH for quieter suspension operation
• Secure Fit: Includes a dedicated adhesive strip to keep the sleeve locked in position
• Consistency: Ensures the spring remains linear throughout its stroke

Fits 2016-2019 Polaris RZR XP Turbo and XP 4 Turbo models.

The Eibach Spring Adapter (MPN: ADAPTER350-375) allows you to interface 3.50-inch I.D. springs with 3.75-inch I.D. SAE springs, significantly expanding your tuning options for custom suspension setups. By bridging the gap between different spring diameters, this adapter enables the use of specific spring rates that may not be available in a single diameter size, allowing for more precise suspension frequency tuning.

Precision-machined from high-strength black Delrin, this adapter provides a durable, low-friction interface designed to withstand the rigorous cycling of off-road racing suspension. It is an essential hardware component for RZR owners looking to customize their coilover stacks with specific spring combinations.

• Adapts 3.50" I.D. to 3.75" I.D. SAE springs
• Manufactured from durable, wear-resistant black Delrin
• Enables a wider range of available spring rates and size combinations
• Designed for high-performance off-road suspension systems
• Manufacturer Part Number: ADAPTER350-375

Fits 2011-2013 Polaris Ranger RZR XP 900 Base models.

The Eibach ADAPTER225-250 allows you to expand your suspension tuning possibilities by adapting 2.25-inch I.D. springs to 2.50-inch I.D. SAE springs. This adapter is essential for drivers looking to utilize specific spring rates or sizes that may not be available in the standard factory diameter. Precision-machined for a secure fit, it ensures your spring system maintains proper alignment and performance during hard use.

• Adapts 2.25" to 2.50" I.D. SAE springs
• Manufactured from high-durability black Delrin material
• Engineered for off-road race spring systems
• Extends the range of available spring rates for custom tuning
• Manufacturer Part Number: ADAPTER225-250

The Eibach ERS 60mm ID Linear Tender Spring (60-60-0030) is an essential component for drivers looking to fine-tune their race car's handling dynamics through a dual-spring suspension setup. By pairing this tender spring with a main spring, you achieve a softer initial rate that improves compliance and maintains tire contact over rough surfaces before the main spring fully engages.

Part of the legendary Eibach Race Spring system, these springs are engineered to the highest standards of linearity and consistency. Whether you are setting up shocks or pull-bars, each ERS component is individually tested to ensure it meets the strict tolerances required for competitive racing applications.

• Inner Diameter: 60mm
• Configuration: Linear Rate
• Pair with main springs to optimize initial suspension compression
• Individually tested for guaranteed rate consistency
• Part Number: 60-60-0030

The Eibach ERS (Eibach Race Spring) system is engineered for professional racing and high-performance off-road applications where precision handling and suspension tuning are critical. This 20-inch coilover spring is designed to provide maximum suspension travel while maintaining a compact 7.87-inch block height, effectively reducing the risk of coil bind during aggressive compression.

• Inside Diameter: 3.75 in
• Free Length: 20 in
• Block Height: 7.87 in
• Series: Eibach Race Springs (ERS)
• MPN: 2000.375.0350S

Each spring is individually tested to ensure the highest level of linearity and guaranteed rate consistency. Built with legendary Eibach durability, these springs allow racers to fine-tune handling dynamics across various shock and pull-bar configurations with repeatable, predictable performance.

The Eibach ERS (Eibach Race Spring) system is engineered for professional racing and high-performance suspension tuning. This 200mm length coil-over spring features a 60mm inside diameter, designed to provide maximum travel in combination with the smallest possible block heights. Whether used on racing shocks or pull-bars, these springs allow for precise handling optimization across a wide range of motorsport applications.

Every ERS spring is manufactured with rigorous quality control to ensure the highest linearity and guaranteed consistency. By utilizing high-tensile materials, Eibach achieves an ultra-lightweight design that reduces unsprung mass, allowing the suspension to react more quickly to track surfaces.

• Inside Diameter: 60mm
• Length: 200mm
• Ultra-lightweight construction for reduced unsprung mass
• Highest linearity and guaranteed consistency for predictable handling
• Individually tested and rated to meet strict tolerances
• Designed for maximum travel and minimal block height
• Manufacturer Part Number: 200-60-0080

Eibach ERS (Eibach Race Springs) are precision-engineered for professional racing and high-performance off-road applications. This 18.00-inch silver coil-over spring provides the predictable handling and consistency required for competitive environments, whether utilized on shocks or pull-bars.

Designed to deliver maximum travel in combination with the smallest block heights, these springs are individually tested to guarantee the highest linearity. This ensures that every component meets strict tolerances for performance optimization across a wide spectrum of racing disciplines.

• Inside Diameter: 3.75 in.
• Length: 18.00 in.
• Finish: Silver Powdercoat
• Manufacturer Part Number: 1800.375.0600S
• Individually tested for rate accuracy and consistency
• Engineered for maximum travel and minimal block height
• Legendary Eibach durability for off-road and track use

The Eibach ERS (Eibach Race Spring) system is engineered for professional racing applications, providing the precision and consistency required for fine-tuning suspension dynamics. This 18.00-inch length coil-over spring with a 3.00-inch inside diameter is designed for maximum travel while maintaining the smallest possible block height, preventing premature coil bind in high-performance environments.

Built for legendary off-road durability and track-proven performance, every ERS spring is individually tested to guarantee the highest linearity and rate consistency. Whether used on shocks or pull-bars, these springs offer the predictable handling characteristics necessary for competitive racing and chassis optimization.

• Part Number: 1800.300.0800S
• Dimensions: 18.00" Length x 3.00" Inside Diameter (ID)
• High-strength construction for maximum travel and minimum block height
• Highest linearity and guaranteed consistency for precision tuning
• Individually tested to meet rigorous racing standards
• Compatible with a wide range of racing shocks and suspension systems

Fine-tune your vehicle's handling dynamics with the Eibach ERS (Eibach Race Spring) system. Designed for precision-engineered performance across a variety of racing applications, from shocks to pull-bars, these springs provide the customization needed for professional-grade suspension tuning. The 1800.300.0700S is built to deliver maximum travel while maintaining the smallest possible block height, ensuring consistent performance without premature coil bind.

• Inside Diameter: 3.00 in.
• Length: 18.00 in.
• Manufacturing: Individually tested for highest linearity and guaranteed consistency.
• Durability: Built for legendary Eibach off-road and track durability.
• Performance: Optimized for maximum travel and minimal block height.
• Manufacturer Part Number: 1800.300.0700S

Whether you are optimizing for off-road impacts or track-day precision, Eibach ERS springs offer the reliability and repeatability required by serious racers.

The Eibach ERS (Eibach Race Spring) system is engineered for professional racing applications that demand precision suspension tuning. This 18.00-inch coilover spring features a 3.00-inch inside diameter and is designed to provide maximum travel while maintaining the smallest possible block height. This allows for increased suspension stroke and optimized clearance in tight racing setups.

Built with legendary Eibach durability, these springs are used in everything from off-road racing to track-specific pull-bar systems. Each spring undergoes individual testing to guarantee consistency and the highest level of linearity in the industry, ensuring that your spring rate remains predictable under heavy loads.

• Manufacturer Part Number: 1800.300.0650S
• Length: 18.00 inches
• Inside Diameter: 3.00 inches
• Performance: Maximum travel combined with minimal block height
• Consistency: High linearity and individually tested for rate accuracy
• Durability: Engineered for extreme off-road and racing environments

Optimize your vehicle suspension for racing or high-performance off-road use with the Eibach ERS (Eibach Race Spring) system. This precision-engineered coil-over spring, part number 1800.300.0600S, is designed to provide the linearity and consistency required for predictable handling and fine-tuning of chassis dynamics. By combining maximum travel with the smallest possible block height, Eibach ERS springs allow for greater suspension articulation and reduced weight compared to standard spring designs.

Each spring in the ERS series is individually tested to ensure it meets strict tolerances, making them a preferred choice for professional racing teams and off-road builders. Whether you are configuring shocks or pull-bars, these springs offer the legendary durability needed to withstand extreme conditions without losing rate accuracy over time.

• Length: 18.00 in.
• Inside Diameter: 3.00 in.
• Spring Rate: 600 lbs/in
• MPN: 1800.300.0600S
• Design: High-linearity linear spring rate
• Features: Optimized for maximum travel and minimal block height

The Eibach ERS (Eibach Race Spring) system is engineered for professional racing applications, providing the precision required to fine-tune handling dynamics from shocks to pull-bars. This 18.00-inch length spring features a 3.00-inch inside diameter, designed specifically to deliver maximum suspension travel while maintaining the smallest possible block heights to prevent coil bind.

• Manufacturer Part Number: 1800.300.0550S
• Inside Diameter: 3.00 inches
• Spring Length: 18.00 inches
• Design: High-linearity for guaranteed rate consistency and predictable handling
• Durability: Built with legendary Eibach off-road durability for extreme environments
• Testing: Each spring is individually tested to meet strict performance tolerances

Whether you are optimizing a circuit-spec suspension or a rugged off-road setup, these springs offer the reliability and performance optimization required for competitive racing.

The Eibach ERS (Eibach Race Spring) system is engineered for professional racing and high-performance off-road applications requiring precision suspension tuning. This 18.00-inch length coil-over spring features a 3.00-inch inside diameter, designed to provide maximum travel while maintaining a minimal block height. Each spring is individually tested and rated to ensure the highest linearity and guaranteed consistency across its entire stroke.

Constructed for legendary Eibach durability, these springs allow for precise handling optimization in diverse racing environments, from primary shock setups to pull-bars. The ERS series is the industry standard for drivers who require predictable suspension response and long-term performance under extreme loads.

• Manufacturer Part Number: 1800.300.0500S
• Length: 18.00 inches
• Inside Diameter: 3.00 inches
• Series: ERS (Eibach Race Spring)
• Maximum travel in combination with minimal block heights
• High linearity for predictable handling dynamics
• Individually tested for rate accuracy and consistency
• Legendary off-road durability and performance

The Eibach ERS (Eibach Race Spring) system is engineered for professional racing and high-performance applications where precision suspension tuning is critical. This 18.00-inch free length coil-over spring features a 3.00-inch inside diameter, designed to integrate seamlessly with various shock and pull-bar setups.

Constructed for legendary Eibach off-road durability, these springs are developed to provide maximum travel in combination with the smallest possible block heights. Each spring is individually tested to ensure the highest linearity and guaranteed consistency, providing the predictable handling dynamics required for competitive motorsports. Whether you are fine-tuning a circuit car or an off-road rig, these precision-engineered components offer the reliability needed to maintain performance under extreme loads.

• Part Type: Coil-Over Spring
• Series: Eibach ERS (Eibach Race Spring)
• Inside Diameter: 3.00 in
• Free Length: 18.00 in
• Engineered for maximum travel and minimal block height
• Individually tested for rate accuracy and consistency
• Manufacturer Part Number: 1800.300.0450S