RaceFace Aeffect R Crankset - 165mm Direct Mount CINCH RaceFace EXI Spindle Interface BLKRaceFace Aeffect R Crankset 165mm Direct Mount CINCH RaceFace EXI Spindle Interface Black. The RaceFace Aeffect R crankset offers enduro rated strength in a lightweight XC style package making it a solid and dependable crankset choice. Its forged 7050 AL construction optimizes stiffness without added weight The Aeffect R features the versatile CINCH system for plenty of interchangeable spider options Can run alloy or steel CINCH direct mount