The GFB 200sx Underdrive Crank Pulley has been re-designed to further reduce weight, and more importantly, a steel wear sleeve has been fitted to the oil seal running surface to greatly increase the 200SX crank pulley longevity and eliminate potential oil leaks caused by wear over time. Nissan 200SX GFB Crank Pulley suits SR20DET & SR20DE RWD ONLY.
The accessories are under-driven by 20%, which does NOT compromise their performance at low RPM, but does help reduce parasitic losses at high RPM.
Part no 2005

Turbosmart FCD Fuel Cut Defender - Pneumatic
GFB Atomic Manual Boost Controller
BC Camshafts B16a B18c stage 2 / 2+ / 3
Hybrid GT2 spec intercooler kit - Mazda 3 MPS Gen 1
Lengthened wheel studs 1.25P 45mm
BC Camshafts RB26DETT stage 2 / 3
Kinugawa Manual Boost Controller Elbow
Radiator Cap Cover - Violence
BC Camshafts K20a stage 2 / 2+ / 3 