The Yukon Gear Dura Grip (MPN YDGF10.25-35-1) is a positraction limited slip differential engineered to provide smooth yet aggressive traction for Ford 10.25" and 10.5" rear ends. Designed for durability in demanding terrains, this 4-pinion LSD utilizes high-strength materials to ensure consistent power delivery and a long service life.

Fits select 1985-2019 Ford F-150, F-250, F-350, E-250, E-350, and Excursion models equipped with 35-spline axles. This unit is designed specifically for full-float applications and is not compatible with C-clip axles. The Dura Grip is fully rebuildable, making it a sustainable choice for long-term performance.

• Fits Ford 10.25" and 10.5" differentials with 35-spline axles
• Forged 4320 chromoly spider gears for maximum tooth strength
• High-strength nodular iron case construction
• Composite clutches for smooth, chatter-free engagement
• Compatible with all gear ratios
• Internal 4-pinion design for superior load distribution
• Proudly assembled in the USA
• Manufacturer Part Number: YDGF10.25-35-1

Fits select 1981-2012 Dodge D250, D350, Ram 2500, Ram 3500, W250, W350, and Ford E-350 Econoline / Super Duty models.

The Yukon Gear Dura Grip is a high-performance positraction limited slip differential (LSD) engineered for aggressive traction and smooth operation across diverse terrains. Designed for the Dana Spicer 70 rear axle, this unit replaces an open or worn-out differential to provide the grip necessary for heavy-duty towing, off-roading, and street performance.

This 4-pinion LSD is built with a high-strength nodular iron case and features forged 4320 chromoly spider gears for superior durability under high-torque loads. The internal composite clutches deliver consistent engagement and are fully rebuildable, ensuring a long service life. This unit is compatible with 32-spline axles and is designed for 4.10 and down gear ratios (numerically lower), including compatibility with thick gears.

• Manufacturer Part Number: YDGD70-3-32
• Fits Dana Spicer 70 with 32-spline axles
• Compatible with 4.10 and down gear ratios (also fits thick gears)
• 4-pinion design for optimized strength and load distribution
• Forged 4320 chromoly spider gears for maximum tooth strength
• High-strength nodular iron case construction
• Fully rebuildable design with durable composite clutches
• Assembled in the USA

Fits select 1953-2006 Chevrolet, Dodge, Ford, GMC, and Jeep vehicles equipped with Dana 44 axles and 30-spline shafts (5.9L). This Yukon Dura Grip limited slip differential (LSD) provides smooth yet aggressive traction, delivering the performance and predictability needed for both street and off-road environments. Engineered for durability and longevity, this unit is fully rebuildable and designed for a precise fit.

The Dura Grip is constructed with a high-strength nodular iron case and features forged 4320 chromoly spider gears for maximum resistance to tooth breakage in high-torque applications. Internal composite clutches ensure consistent engagement and long service life. Whether you are replacing a worn factory unit or upgrading for better trail performance, the Dura Grip offers a robust solution for vehicles with 3.92 and numerically higher gear ratios.

• Manufacturer Part Number: YDGD44-4-30-1
• Axle Model: Dana Spicer 44
• Spline Count: 30
• Carrier Range: 3.92 and Up
• Case Material: High-strength nodular iron
• Internal Gears: Forged 4320 chromoly spider gears
• Clutch Type: Composite clutches
• Design: Fully rebuildable and assembled in the USA

Fits select 1953-2011 Chevrolet, Dodge, Ford, GMC, and Jeep models (5.9L). The Yukon Dura Grip is a clutch-style positraction limited slip differential designed to provide smooth yet aggressive traction across varied terrain. Built for durability and performance, this unit features a high-strength nodular iron case and internal components forged from 4320 chromoly steel to handle the stresses of street and off-road use.

This rebuildable differential uses composite clutches for a long service life and predictable engagement. It is designed for Dana Spicer 44 housings utilizing 30-spline axle shafts and is compatible with carrier-specific gear ratios of 3.73 and numerically lower (including thick gears).

• Manufacturer Part Number: YDGD44-3-30-1
• Fits Dana Spicer 44 with 30-spline axles
• Compatible with 3.73 and down gear ratios (also fits thick gears)
• Constructed with high-strength nodular iron case
• Forged 4320 chromoly spider gears for maximum tooth strength
• Equipped with high-friction composite clutches
• Fully rebuildable design
• Proudly assembled in the USA

Fits 2010-2025 Dodge Ram 1500 and Ram 1500 Classic models equipped with the Chrysler 9.25" ZF rear differential and 31-spline axles.

The Yukon Dura Grip is a clutch-style positraction limited slip differential designed to provide smooth yet aggressive traction. Whether you are navigating off-road terrain or looking for better street performance, the Dura Grip delivers power to both wheels without the harsh engagement of a mechanical locker. This unit is engineered for long-term durability, utilizing a high-strength nodular iron case and forged 4320 chromoly spider gears for maximum tooth strength. The composite clutches ensure a long service life and the entire unit is fully rebuildable, making it a sustainable performance upgrade for your drivetrain.

• Fits Chrysler 9.25" ZF rear differentials with 31-spline axles
• Compatible with all gear ratios
• High-strength nodular iron case for housing rigidity
• Forged 4320 chromoly spider gears for ultimate durability
• Internal composite clutches for smooth, reliable limited-slip operation
• Fully rebuildable design
• Assembled in the USA
• Manufacturer Part Number: YDGC9.25ZF-31-1

Fits select 1997-2012 Chrysler, Dodge, Jeep, and Ram vehicles equipped with 8.25-inch rear axles, 29-spline shafts, and 2.56-up gear ratios. The Yukon Dura Grip (YDGC8.25-29-1) is a clutch-style positraction limited slip differential designed for consistent traction and predictable engagement across diverse driving conditions. Built for long-term serviceability, this unit is fully rebuildable and engineered to withstand higher torque loads than standard OE components.

• High-Strength Construction: Features a nodular iron case for housing rigidity and forged 4320 chromoly spider gears for maximum tooth strength.
• Composite Clutches: Utilizes high-friction composite clutch packs to deliver smooth torque transfer while maintaining aggressive grip.
• Technical Specifications: Designed for the Chrysler 8.25" differential with a 29-spline count; compatible with all gear ratios 2.56 and numerically higher.
• Serviceability: Internal components are fully replaceable, allowing for easy maintenance and restoration of performance over time.
• Manufacturer Part Number: YDGC8.25-29-1

The ARB 6mm Pressure Supply Kit (171321) is a heavy-duty pneumatic upgrade designed to improve the reliability and serviceability of your vehicle's locking differentials. By transitioning to a 6mm pneumatic standard, this kit provides a more robust alternative to older 5mm systems. It is completely retrofittable for all ARB Air Lockers currently utilizing 3.5mm copper tube seal housings.

This kit features a black polymer airline with 50% more wall thickness than previous designs, offering significantly higher resistance to the cuts, abrasions, and heat-cycling common in off-road environments. The included bulkhead fittings are highly configurable, allowing for either a traditional straight connection or a 90-degree orientation to accommodate tight mounting locations. The system also utilizes 1/8 BSP standard threads and push-in fittings with positive-click disengagement for a secure, leak-free seal.

• Manufacturer Part Number: 171321
• Airline: 6mm black polymer with 50% increased wall thickness
• Fittings: 6mm push-in with positive-click disengagement
• Bulkhead Connector: Configurable for straight or 90-degree installation
• Threads: Standard 1/8 BSP fittings
• Installation Note: Compression nut is best set using a PZ3 Pozidriv screwdriver to prevent overtightening of the copper tube connection
• Compatibility: Fits all ARB Air Lockers with 3.5mm copper tube seal housings

The Revolution Gear & Axle Full Spool is a heavy-duty traction solution engineered for the GM 14-Bolt 10.5-inch rear differential. This full spool replaces the factory carrier assembly to provide a permanent, 100% mechanical lock between the axle shafts. It is built to withstand the extreme torque loads of rock crawling and competition use, ensuring both wheels rotate at the same speed regardless of traction conditions.

Designed for 30-spline axle shafts, this spool specifically fits housings configured for 4.10 and numerically lower gear ratios (4.10 & Down). By eliminating the spider gears and internal components found in traditional differentials, this spool significantly increases the structural integrity of your drivetrain and removes the primary failure points under high-stress operation.

• Axle Application: GM 14-Bolt (10.5-inch Ring Gear)
• Spline Count: 30-Spline
• Carrier Fitment: 4.10 and Numerically Lower Gear Ratios
• Component Type: Full Spool (Replaces Carrier)
• Material: High-strength machined steel for maximum durability
• Manufacturer Part Number: 75-2023-30

Fits 1993-1998 Toyota Supra Twin Turbo (JZA80) and Soarer (JZZ30) models equipped with 8.5-inch differentials.

The OS Giken Super Lock LSD (TY031-HA) represents a significant advancement in drivetrain technology, engineered to provide 100% locking capability without the harshness or chatter associated with traditional plate-style differentials. This limited-slip differential uses a patented pressure ring design that allows for progressive engagement, ensuring maximum traction during high-speed cornering and straight-line acceleration while maintaining smooth operation during low-speed maneuvers.

• Manufacturer Part Number: TY031-HA
• Compatible with 8.5-inch differential housings
• Suitable for 5-speed manual, 6-speed manual, and automatic transmissions
• Internal pressure ring design for progressive, predictable locking
• Precision-manufactured friction plates for increased durability and heat capacity
• Replaces factory open or Torsen-style differentials

Fits select 2007-2017 Nissan 350Z, 370Z and Infiniti G35, G37 models (VQ35HR/VQ37 engines) equipped with manual transmissions.

The OS Giken Super Lock LSD is a precision-engineered mechanical limited-slip differential designed to solve the traction limitations of factory-equipped units. Unlike standard viscous or open differentials, the Super Lock design uses a high number of friction plates to provide progressive and predictable locking engagement. This ensures that power is distributed effectively to both drive wheels, significantly improving corner-exit speed and high-speed stability.

• Manufacturer Part Number: NS112-HA
• Series: Super Lock LSD
• Transmission Compatibility: Manual Transmission (MT) Only
• Housing: High-strength steel construction for maximum durability
• Performance: Fully tunable locking characteristics for street or track use

By utilizing a unique pressure ring design, this LSD minimizes chatter and heat buildup while providing a smooth transition between open and locked states. It is a direct replacement for the factory differential unit in supported VQ-series manual transmission housings.

Fits 1991-1998 Nissan 240SX Base, LE, and SE models equipped with the KA24DE engine and manual transmission.

The OS Giken Super Lock LSD is a precision-engineered mechanical limited-slip differential designed to provide smooth, progressive engagement and maximum traction for the S13 and S14 chassis. Unlike standard clutch-type differentials that can be noisy or harsh, the Super Lock design uses a unique internal pressure ring mechanism that allows for 100% lock-up under load while remaining quiet during low-speed maneuvers. This improves corner-exit speeds and predictable handling by eliminating sudden wheel spin.

• Manufacturer Part Number: NS046-HA
• Fits: 1991-1998 Nissan 240SX (S13/S14)
• Transmission Compatibility: Manual Transmission (MT) only
• Engine: KA24DE
• Internal components are precision-machined and heat-treated for high-torque durability
• Provides progressive locking up to 100% for superior power delivery

Fits select 1987-2011 Mazda RX-7 and RX-8 models (13BT, FD3S, SE3P) equipped with manual transmissions.

The OS Giken Super Lock LSD (MZ101-HA) is a premium mechanical limited-slip differential engineered to solve the traction limitations of factory rotary drivetrains. By utilizing a high number of friction plates and a patented pressure-ring design, this unit provides smooth, progressive engagement that can reach 100% lock-up under load. This translates to significantly improved corner-exit speeds, more predictable mid-corner balance, and eliminated wheel-spin during hard acceleration.

• Designed specifically for manual transmission (MT) Mazda RX-7 (Turbo II/FD3S) and RX-8 applications.
• Superior friction plate count ensures maximum durability and better heat dissipation than standard units.
• Predictable performance replaces inconsistent factory viscous or Torsen differentials.
• Precision-machined internal components for quiet operation and long service life.
• Manufacturer Part Number: MZ101-HA

Fits 2006-2014 Mazda MX-5 Miata NC models equipped with manual transmissions. This high-performance mechanical limited-slip differential is engineered to transform the handling characteristics of the third-generation MX-5 by maximizing traction and stability under hard cornering and acceleration.

The OS Giken Super Lock LSD utilizes a progressive locking mechanism that allows for a smooth, predictable transition from open to locked states. Unlike traditional plate-style differentials that can be noisy or harsh, the Super Lock design accommodates more friction plates than standard units, allowing for lower preload settings while providing 100% lock-up when needed. This results in superior corner-exit speed and reduced wheel spin without sacrificing street drivability.

• Manufacturer Part Number: MZ091-HA
• Type: Mechanical Limited Slip Differential (LSD)
• Fitment: 2006-2014 Mazda MX-5 (NC) Manual Transmission only
• Internal Design: High-capacity friction plate configuration for 100% lock-up capability
• Benefits: Improved traction, reduced tire wear compared to harsh lockers, and enhanced cornering stability

Fits 2015-2024 Ford Mustang models including EcoBoost, GT, Mach 1, Shelby GT350, Shelby GT500, and Dark Horse.

The Ford Racing Traction-Lok differential (M-4204-M) is engineered to optimize rear-wheel traction by effectively transferring power to both wheels. This limited-slip unit uses heavy plate-style clutches to ensure engine power reaches the ground consistently, making it an ideal upgrade for both daily street driving and competitive drag strip use.

This high-strength 31-spline unit is designed for the 8.8-inch rear end and maintains full compatibility with the factory anti-lock brake (ABS) exciter rings. It serves as a direct-fit performance replacement for worn factory units or an essential upgrade for models looking to improve launch consistency and corner-exit grip.

• Manufacturer Part Number: M-4204-M
• Differential Type: Traction-Lok Limited Slip
• Axle Spline Count: 31-Spline
• Ring Gear Diameter: 8.8-inch
• Clutch Style: Heavy-duty plate-style clutches
• ABS Compatible: Accommodates factory exciter rings

Fits 1986-2014 Ford Mustang Base, GT, and SVT Cobra models equipped with 8.8-inch rear axles.

The Ford Racing Traction-Lok Limited Slip Differential (M-4204-F318C) is designed to restore or upgrade the traction performance of your 8.8-inch rear-drive assembly. This unit provides the necessary torque-sensing capability to deliver power to both wheels under load, ensuring consistent acceleration and better control. Built as a direct replacement for original equipment, it offers a perfect fit for Ford builds and is proudly made in the USA for maximum durability.

• Manufacturer Part Number: M-4204-F318C
• Differential Type: Traction-Lok Limited Slip
• Axle Compatibility: 8.8 in. rear-drive pinions
• Direct replacement for factory Ford equipment
• Proudly made in the USA

Fits select 2004-2025 Ford F-150 models (XL, XLT, Lariat, King Ranch, Platinum, Raptor, Tremor, and others) equipped with the 8.8-inch front axle.

Improve off-road capability and on-road stability with the Ford Racing Torsen limited-slip differential. Unlike traditional clutch-type differentials that wear down over time, this Torsen unit utilizes a maintenance-free worm gear friction system. It provides immediate, full-time torque sensing and biasing, ensuring engine power is efficiently directed to the wheel with the most grip.

This differential is a performance upgrade for street, trail, or work use, offering smooth engagement and consistent traction under variable driving conditions without the chatter associated with some mechanical lockers.

• Differential Type: Torsen (Torque Sensing)
• Axle Fitment: Ford 8.8-inch front axle
• Design: Maintenance-free worm gear friction system (no clutches to replace)
• Operation: Full-time torque sensing and biasing
• Manufacturer Part Number: M-4204-F150LS

Fits 2015-2023 Ford F-150 (King Ranch, Lariat, Limited, Platinum, Police Responder, SSV, Tremor, XL, XLT) models with 34-spline rear axles.

The Eaton Detroit Truetrac is the industry-leading helical-gear style, limited-slip differential. Unlike traditional clutch-style LSDs, the Truetrac uses a gear-based system that requires no maintenance and features smooth, automatic engagement. This unit delivers a high torque bias ratio to maximize acceleration and handling without the chatter or tire scrubbing associated with locker differentials.

Designed for durability and quiet operation, this differential performs equally well in forward and reverse. Because it uses gears rather than friction discs, it does not require special lubrication or friction modifiers, making it a reliable choice for daily driving, towing, and light off-road use.

• Manufacturer Part Number: 917A739
• Axle Spline Count: 34
• Gear Ratio: 3.31 and Up
• Style: Helical Gear Limited Slip
• Maintenance: No friction modifiers or special additives required
• Performance: Automatic engagement with optimized torque bias

Fits select 2009-2023 Ford F-150 models with the 8.8-inch front axle.

The Eaton Detroit Truetrac is a premium helical-gear style limited-slip differential designed to maximize traction and improve handling without the maintenance requirements of traditional clutch-type units. This gear-based system automatically senses wheel slip and transfers torque to the tire with the most grip, providing smooth and quiet operation in both forward and reverse.

Engineered for durability, this maintenance-free unit (MPN 917A738) requires no special friction modifiers or additives and operates with standard gear oil. It is the ideal traction solution for F-150 owners seeking reliable performance for street, towing, and off-road applications. This differential is designed for front 8.8-inch axles with a 31-spline count and is compatible with all gear ratios.

• Automatic Operation: Helical gear design provides seamless engagement without driver input.
• Low Maintenance: No clutch packs to wear out; no special lubrication or friction modifiers required.
• High Performance: Optimized torque bias ratios deliver improved acceleration and cornering stability.
• Specifications: Fits Ford 8.8" front axles, 31-spline, all ratios.
• Part Number: 917A738

Vehicle Fitment:

Fits select 2018-2023 Jeep Wrangler (JL) and Gladiator (JT), 2021-2023 Ford Bronco, and 2019-2022 Ford Ranger models equipped with Dana 44 M210 or M220 axles.

The Eaton Detroit Truetrac is the industry-leading helical-gear style limited-slip differential. Unlike traditional LSDs that rely on clutches which eventually wear out, the Truetrac utilizes a sophisticated gear-driven design that is essentially maintenance-free. It operates as a standard open differential under normal conditions, but as soon as a wheel begins to slip, the helical gears automatically transfer torque to the high-traction wheel to keep you moving forward.

This unit is ideal for daily drivers, overland builds, and off-road enthusiasts who want predictable, smooth, and quiet traction without the harsh engagement of a locker or the maintenance requirements of clutch-based units. Because it uses gears rather than friction discs, you do not need special lubrication or friction modifiers.

• Manufacturer Part Number: 917A736
• Axle Application: Dana 44 (M210 / M220)
• Spline Count: 32
• Design: Helical Gear (Clutchless) Limited Slip
• Operation: Fully automatic engagement in both forward and reverse
• Maintenance: Maintenance-free design; no friction modifiers required

Fits select 2011-2019 Ram 1500, Cadillac Escalade/ESV, Chevrolet Silverado, Tahoe, Suburban, Express, and GMC Yukon/Savana.

The Eaton Detroit Truetrac (MPN 917A732) is a premium helical-gear style limited-slip differential designed to provide superior traction and handling. Unlike traditional clutch-type units, the Truetrac utilizes a gear-based system that automatically transfers torque to the wheel with the most grip. This design eliminates the need for wearable clutch plates, making the unit maintenance-free and exceptionally quiet during operation.

Built for durability, this differential performs reliably in both forward and reverse, making it an ideal traction solution for daily drivers, towing, and light off-road applications. It integrates seamlessly into the vehicle's drivetrain, requiring no special lubrication or friction modifiers.

• Manufacturer Part Number: 917A732
• Spline Count: 33-Tooth
• Axle Fitment: GM 9.5-inch and 9.75-inch ring gears
• Operation: Smooth, automatic helical gear engagement
• Maintenance: No friction modifiers or special additives required
• Versatility: Works in forward and reverse for consistent traction

Fits 2000-2023 Ford Mustang (Base, GT, EcoBoost, Shelby GT350/GT500, Mach 1, Bullitt, V6).

The Eaton Detroit Truetrac (917A731) is a helical-gear style limited-slip differential designed to maximize wheel traction and improve handling characteristics on the street or track. Unlike traditional clutch-style units that eventually wear out and require rebuilding, the Truetrac uses a gear-based system that is entirely maintenance-free. This differential provides smooth, automatic operation in both forward and reverse, engaging instantly when a wheel loses grip to transfer torque to the high-traction wheel.

• Helical Gear Design: Delivers quiet, smooth operation without the chatter or friction modifiers associated with clutch-type LSDs.
• Optimized Torque Bias: Enhances acceleration and cornering stability by managing power distribution across the axle.
• Durable Construction: High-strength internals designed for Ford Super 8.8-inch housings.
• Maintenance-Free: No clutches to replace and no special lubrication requirements.
• Specifications: Fits 34-spline axles; compatible with Super 8.8" rear ends.

Fits 2011-2018 Ram 1500, 2500, and 3500 pickups.

The Eaton Detroit Truetrac is a helical-gear limited-slip differential designed to provide smooth, automatic traction on demand. Unlike traditional clutch-style LSDs that wear out over time, the Truetrac utilizes a maintenance-free, gear-based system. This design eliminates the need for special friction modifiers or additives, making it a robust solution for Ram owners who use their trucks for heavy towing, hauling, or off-road excursions. It operates silently in both forward and reverse, engaging instantly when it detects wheel slip to transfer torque to the tire with the most grip.

• Manufacturer Part Number: 917A730
• Differential Type: Helical Gear Limited-Slip (LSD)
• Axle Fitment: Chrysler 9.25-inch ring gear
• Spline Count: 31-Teeth
• Operation: Automatic engagement with optimized torque bias ratios
• Maintenance: No special lubrication or friction modifiers required
• Durability: Clutchless design for long-term reliability and quiet operation

Fits select 2001-2019 Chevrolet, GMC, Dodge, Chrysler, and Ram vehicles including Silverado/Sierra 2500HD/3500HD, Ram 1500/2500/3500, and Express/Savana vans.

The Eaton Detroit Truetrac is the industry-leading helical-gear style, limited-slip differential. This maintenance-free unit is designed to maximize wheel traction and enhance handling characteristics without the need for clutch packs. Its gear-based design operates smoothly and automatically, transferring torque to the wheel with the most grip in both forward and reverse directions.

Built for durability and quiet operation, the Truetrac replaces your open or worn factory differential to provide consistent, reliable traction for towing, off-roading, or performance street driving. Because it uses gears rather than friction discs, it requires no special lubrication or friction modifiers, making it a true "install and forget" traction solution.

• Manufacturer Part Number: 915A568
• Axle Fitment: 11.5 inch ring gear
• Spline Count: 30 Spline
• Differential Type: Helical Gear Limited Slip (LSD)
• Maintenance-free operation; no friction modifiers required
• Optimized torque bias ratios for maximum acceleration
• Automatic engagement in forward and reverse