GFB Under-Driven Crank Pulley for Subaru WRX/ STi (2014) Matrix Concepts • Two-row 1

• Two-row 1

0 2175 1575 1235 1020 855 1275 43

Replacement for OEM part number 1300A083

(A battery can be one of the above types and MF)

• Rated for 1400 HP

GFB Under-Driven Crank Pulley for Subaru WRX/ STi (2014) Matrix Concepts • Two-row 1The 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