OS Giken Mazda FC3S RX-7 3-Speed close ratio gear kit Use of OS Movement Alteration

Use of OS Movement Alteration Kits with unintended applications may result in failure of clutch components

The solid hub clutch discs are 215mm in size and are good up to about 850lbs ft of torque reliably

Stock capacity is 0

Requires NS201-ALT28 (R33) - Pull Type Gearbox

OS Giken Mazda FC3S RX-7 3-Speed close ratio gear kit Use of OS Movement AlterationWe carefully research each engine and intended racing application to formulate the most suitable gear ratios to maximize the engines potential. The gears are intended to keep the engine operating at its peak optimal power band thus allowing the vehicle to continue to accelerate as efficiently as possible. Fitment: Mazda RX 7 (FC3S) Product Details: Close Ratio Gears 1st: 2. 714: 1 2nd: 1. 742: 1 3rd: 1. 267: 1 Chemically heat treated for strength and