Short Gears and R&P 4.23

[Chris NSX]

if anyone wants to sell their used 4.23 let me know please. reading this tread only cemented my decision to upgrade my 6sp with it. the stock gearing is very smooth and 'uneventful' but somehow lacking.

I am not sure if anyone has fix the issues with the 6 speed and 4.23 for the NSX with electronic power steering. I know SOS was working on it in the pass.

I think the 4.23 for a 5 and 6 speed shared some of the same parts. The countershaft is diffrent of the 5 speed the oil pump shaft and finial drive has the same part number.

Oil Pump Shaft 21173-PR8-J00
Countershaft 23220-PR8-T00
Final Driven Gear 41233-PR8-J00