The HKS Circle Earth Grounding System (48004-AK001) is a universal electrical upgrade designed to optimize the efficiency of your vehicle's electrical circuit. By providing a direct, low-resistance path back to the battery from multiple points on the chassis and engine block, this kit stabilizes voltage and minimizes electrical noise that can interfere with sensitive electronics and sensor signals.

Built for durability and performance, the kit features high-conductivity cables and 24k gold-plated terminals to ensure maximum current flow and resistance to corrosion. The centerpiece is the signature "Circle Earth" distribution hub, which centralizes grounding points for a cleaner engine bay layout and improved grounding potential compared to aged factory straps.

• Stabilizes electrical current to improve ignition performance and sensor accuracy
• Reduces electromagnetic interference (EMI) for clearer audio and reliable ECU communication
• Universal fitment compatible with a wide range of engine configurations
• High-conductivity cables with 24k gold-plated terminals and circular distribution hub
• Manufacturer Part Number: 48004-AK001

Fits 2008-2014 Subaru WRX and STI models.

The GrimmSpeed Lightweight Battery Mount Kit is engineered for enthusiasts looking to shed significant front-end weight while maintaining a secure battery installation. By downsizing the heavy factory battery to a compact, lightweight alternative, you improve the weight distribution of your Subaru. This kit is designed to bolt directly to the factory mounting points, ensuring a stable fit without the need for custom fabrication.

• Laser-cut construction for precise fitment
• Durable red powder-coat finish for corrosion resistance and engine bay style
• Specifically designed for select lightweight battery footprints
• Direct bolt-on installation using factory mounting locations
• Manufacturer Part Number: 121034

Fits 2008-2014 Subaru WRX and STI models.

The GrimmSpeed Lightweight Battery Mount Kit (MPN 121028) is an engineered solution for enthusiasts looking to reduce front-end weight and improve engine bay accessibility. This kit allows for the secure installation of smaller, lightweight racing batteries by replacing the heavy and bulky factory plastic tray with a precise, compact mounting system.

• Utilizes factory mounting points for a clean, direct bolt-on installation
• Specifically designed to fit the GR/GV chassis engine bay layout
• Constructed from durable materials for long-term battery security
• Provides significant weight savings over the stock battery and tray assembly
• Manufacturer Part Number: 121028

Fits 2008-2018 Subaru WRX and STI.

Replace the uninspiring factory stamped-steel bracket with the GrimmSpeed Lightweight Battery Tie Down (121026). This component is designed to provide a secure mount for your battery while significantly cleaning up the appearance of your engine bay. Laser-cut from high-quality aluminum and finished in a resilient black powder coat, it offers a durable alternative to the corrosion-prone OEM piece.

• Laser-cut aluminum construction for maximum weight savings and strength
• Durable black powder-coated finish resists battery acid and engine bay heat
• Engineered for a precise fit over the factory battery casing
• Utilizes factory mounting points for a straightforward installation
• Manufacturer Part Number: 121026

Fits 2016-2018 Ford Focus RS.

The GrimmSpeed Lightweight Battery Mount (MPN 121023) is a precision-engineered solution for owners looking to shed front-end weight and reclaim valuable engine bay space. By replacing the heavy, oversized factory battery tray, this mount allows for the installation of a smaller lightweight battery, improving weight distribution while maintaining a secure, vibration-resistant hold.

• Direct-fit installation utilizing factory mounting points
• Laser-cut and CNC-bent for exact fitment tolerances
• Durable black powder-coated finish protects against corrosion and battery acid
• Streamlined design simplifies engine bay maintenance and air intake clearance
• Manufacturer Part Number: 121023

Fits 2011-2014 Ford Mustang GT and Boss 302 (5.0L).

Upgrade your Coyote engine with the same high-performance charging components used on the production 2012 Mustang Boss 302. This Ford Racing alternator kit is specifically engineered to maintain belt integrity and component longevity during high-RPM operation. It replaces the standard charging system components with heavy-duty hardware designed for aggressive driving and track conditions.

• One-Way Clutch: Features a specialized clutch pulley to prevent belt hop-off during rapid upshifts and sudden RPM changes.
• High-Tension Tensioner: Includes a tensioner with increased spring rate for superior belt control and reduced slip.
• Larger Diameter Pulley: Slows down the internal armature speed to reduce mechanical drag and minimize parasitic horsepower loss.
• High-RPM Stability: Validated for performance use where sustained high engine speeds are common.
• Made in the USA
• Manufacturer Part Number: M-8600-M50BALT

Fits 2013+ Subaru BRZ, Scion FR-S, and Toyota 86.

Replace your dull, factory-stamped steel battery stay with the Cusco Blue Battery Tie Down. This structural upgrade is designed to securely hold your battery in place while adding Cusco's signature performance aesthetic to your engine bay. Precision-cut from high-grade aluminum, this tie down is significantly more rigid than the OE component it replaces.

• Direct bolt-on installation using factory mounting points and hardware
• Signature Cusco blue anodized finish for long-lasting corrosion resistance
• Lightweight and durable aluminum construction
• Manufacturer Part Number: 00B 745 B

The Autometer E-POWER 800 is a versatile 4-in-1 emergency power solution designed for vehicle recovery and portable charging. This compact 12V power pack delivers 800A of peak current, capable of jump-starting a vehicle up to twenty times on a single charge. It eliminates the need for jumper cables or roadside assistance, providing independence in emergency situations.

Constructed to serve as more than just a starter, the EP-800 functions as a high-capacity power bank for mobile devices, a dedicated laptop power source, and an integrated LED flashlight for low-light repairs. Whether you are off the grid or in a parking lot, this multi-function kit ensures your essential electronics and vehicle remain operational.

• Manufacturer Part Number: EP-800
• Peak Current: 800A
• System Voltage: 12V
• Capacity: 2220 mAh
• 4-in-1 Functionality: Jump starter, mobile power bank, laptop battery, and LED flashlight
• Performance: Capable of up to 20 jump starts per full charge

Upgrade your engine bay with the Cobb Battery Tie Down for Subaru vehicles. This component replaces the thin, factory stamped-steel bracket with a more robust, precision-engineered solution that prevents battery movement during spirited driving. Finished in Stealth Black, it offers a clean, technical aesthetic that complements any build.

• CNC machined construction for high strength and a precise fit
• Durable Stealth Black anodized finish resists corrosion and wear
• Direct replacement for the original equipment battery bracket
• Manufacturer Part Number: 800160