Revitalize your vehicle's performance with GFB's light-weight under-drive pulley kit, boosting throttle response and power. Precision-engineered from 6061-T6 aluminum billet, these pulleys are significantly lighter than stock, reducing rotating inertia for faster engine acceleration. The under-driving feature enhances power by minimizing the crank pulley size, ensuring efficiency between idle and 1400RPM. Tested on an MY02 Subaru WRX, the Atomic Boost Controller delivers up to 18kW at the wheels, providing earlier boost rise and improved acceleration. Ideal for MY01-02 WRX models, the 2-pulley Subaru WRX kit, available in Blue, Red, and Silver, is a must-have upgrade. Transform your driving experience with GFB's premium modifications?unleash power without compromising factory boost levels!

Elevate your engine's power with our high lift camshaft installation and rotation modification. Experience a remarkable 12.0mm lift at 10000rpm, thanks to our chrome-moly cam bearing cap studs. We've prioritized easy maintenance by extending bolt lengths, eliminating common installation issues. Our meticulously crafted components, such as Bolt (RB26193016), Nut (RB26193016), Bolt (191064 x 28), and Nut (191065 x 28), ensure durability and optimal performance. Choose innovation, choose reliability ? revolutionize your ride with our advanced technology.

Introducing the GFB Mach 1 Blow Off Valve ? where power meets versatility. Choose between silent stealth, attention-grabbing WHOOSH, or a balanced blend of both. The Mach 1 combines the best of GFB's Mach 1 and Plumback valves in an affordable kit, allowing you to vent for maximum noise or plumb back for silent and legal operation. With a stylish black anodized finish option, this valve is perfect for turbo applications up to 280kW (365hp). Elevate your driving experience with the Mach 1 kit, featuring a 35mm Standard Base, Short Length 1" for custom weld-ons, and a Plumb Back Outlet ? available in Red, Blue, and Silver. Unleash the power with GFB.