GFB Subaru Lightweight Non-Underdrive Crank Pulley - Subaru STI VA 75w90 The best part about trusting

The best part about trusting your Type R with Rally Armor

and construction

The problem is that this is one of the most overlooked maintenance components that the average driver can easily overlook

Subaru Front Mount Intercooler Kit (Silver) STI 2015-2019

GFB Subaru Lightweight Non-Underdrive Crank Pulley - Subaru STI VA 75w90 The best part about trustingGFB's lightweight non underdrive crank pulley (part number 2009) is made from anodized aircraft grade billet 6061 T6 aluminium and offers sharper throttle response and faster acceleration. Kit includes: crank pulley only (original factory belts are used). GFB pulleys are designed to improve acceleration by reducing the rotational mass (inertia) on the crankshaft. The effect is similar to a lighter flywheel, and the engine feels more lively and willing