I guess one of the biggest discrepancies is the difference in suspension between the Cup RC390 and the Street RC390. I dont hear differentiation between the two when referring to suspension problems/adjustments/upgrades/tuning etc. I have a street RC and am looking at a CUP 390 for racing but wondered about the spring availability and all the actual differences between springs for both bikes as well as any differences. It would be great to see more differentiation here on the forum when referring to different bikes/suspension etc. I see it as a possible mix up situation. Specifically I wonder about spring sizes and types (linear or progressive) between the two bikes as well as the actual damping and design differences between both. Does anyone know if front spring specifications ID/OD/free length/rate are the same or different than the Street version and if so what are the specifications of the CUP bike springs?
Thanks,
Thanks,
Last edited: