Grannas Exclusive 4.11 Ring & Pinion for the “A-Series” 200mm “small” MKIV Supra Diff. Found in the NA MKIV supra, TT auto MKIV supra, GS300, SC300, and a few others. This upgraded ring and pinion gearset is manufactured by Neat Gear Boxes in Australia
These ring and pinion sets are 25-30% stronger than OEM. They use a larger/stronger module of tooth, better core material & better surface finish.
Specifications:
* Made out of Billet EN36C Steel (this is a much higher grade than OEM material).
* Initial soft cut on Gleason hobbing machine.
* Heat Treated then profile ground to final finish with Gleason CNC grinder to remove any distortion from the heat treatment process.
* Optimized gear profile for racing use
* Designed with OEM NVH in mind with a balance between improved strength over standard and a tooth cut that will be just as quiet.