RACING CHAIN KIT APRILIA TUONO V4 1100 2021-2024 WITH DID CHAIN (RATIO 15/42)

Complete transmission kit with DID chain with original transmission ratio, with steel front sprocket, aluminium rear sprocket and DID 520 ERV7 racing chain with X-Ring, the same used in MotoGP and in the SBK world championship for its exceptional characteristics of lightness and smoothness. Extremely robust, it is an absolutely recommended product also for normal road use.

All Racing kits exist both in version with transmission ratio equal to the original, and with modified transmission ratio.

Features and content of the kit:

- Lightened steel front sprocket - 15 teeth (as original)
- ERGAL 7075 rear sprocket - 42 teeth (as original)
- Racing DID 520 ERV7 sealed chain - 110 links