different clutch bell too, other parts are interchangable with the FW05 3D clutch if not the same parts.
RRR has 15/16/17t 1st gears pinions and 20/21/22/23t 2nd gear pinions, those same 20/21/22/23t gears are also the 1st gear pinions on the FW05 and RR/Evo which then run the 25/26/27/28t as 2nd gear pinions.
The Spur gears for the RRR also fits the RR & Evo.