GFB 2011 Evo 4-9 Under-Drive Crank Pulley w/ Belt

GFB Evo 4-9 Under-Drive Crank Pulley w/ Belt

Brand : Go Fast Bits

ManufacturerPart : 2011

UPC : 9328022002491

Length : 6.4 inches

Width : 6.4 inches

Height : 3.3 inches

Weight : 1.3 lbs

Box Quantity : 1

Prop65 : Y

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 percent, so most of the torque that used to accelerate the pulley can now be applied to the wheels.

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