GFB Under-Driven Crank Pulley for Subaru WRX/ STi (2014) English Racing (1) STM Small Radiator Kit

(1) STM Small Radiator Kit

MD322509 02000A

(1) V-Band Clamp (1415C)

Since the vehicle was released in 2019

00 Stage 2 cam to suit turbocharged engine builds for super lap or wild street performance

GFB Under-Driven Crank Pulley for Subaru WRX/ STi (2014) English Racing (1) STM Small Radiator KitThe Go Fast Bits 3 piece underdrive pulley kit includes crank, alternator, and power steering pulleys, along with the required belt. Crafted from aircraft grade 6061 T6 aluminum, these lightweight pulleys reduce crankshaft weight, resulting in quicker acceleration and sharper throttle response, much like a lighter flywheel. This kit offers up to an 85% reduction in rotating inertia, making the engine feel more lively and eager to rev, without causing