SR20DET Lightweight Underdrive Crank Pulley

GFB’s  SR20DET lightweight underdrive crank pulley (part number 2005) is made from anodized aircraft-grade billet 6061-T6 aluminium and offers sharper throttle response and faster acceleration. Kit includes: crank pulley only (shorter belts required).

GFB designs these pulleys to improve acceleration by reducing crankshaft rotational mass (inertia) and cutting parasitic load from driven accessories. The effect is similar to a lighter flywheel and the engine feels more lively and willing to rev.

We know that people are sometimes concerned about possible adverse effects of lightweight pulleys and underdriving but rest assured we have done our homework!
GFB optimises the underdrive ratios to maintain full accessory performance with no adverse effects. While some engine types can suffer harmonic issues with lightweight pulleys, GFB avoids those applications. The team thoroughly tests every kit to ensure it won’t cause engine damage in the short or long term.

SR20DET Lightweight Underdrive Crank Pulley also suits: NISSAN 180SX S13 2.0 SR20DET
NISSAN 200SX S14-15 2.0 SR20DET 93-03
NISSAN Silvia S13 2.0 SR20DET 88-94