Quick view Details Go Fast Bits | sku: GFB2011 GFB Evo 4-9 Under-Drive Crank Pulley w/ Belt - 2011 MSRP: $259.00 Now: $233.10 Add to Cart Compare Quick view Go Fast Bits | sku: GFB2011 GFB Evo 4-9 Under-Drive Crank Pulley w/ Belt - 2011 It might be hard to imagine how reducing the mass of a pulley makes a car go faster, but accelerating a heavy factory pulley from say 3000-7000 RPM in a second or two saps a measurable amount of torque. GFB Lightweight Pulleys reduce inertia by up to 85... MSRP: $259.00 Now: $233.10 Add to Cart Compare Compare Selected
Quick view Go Fast Bits | sku: GFB2011 GFB Evo 4-9 Under-Drive Crank Pulley w/ Belt - 2011 It might be hard to imagine how reducing the mass of a pulley makes a car go faster, but accelerating a heavy factory pulley from say 3000-7000 RPM in a second or two saps a measurable amount of torque. GFB Lightweight Pulleys reduce inertia by up to 85... MSRP: $259.00 Now: $233.10 Add to Cart Compare Compare Selected
