D.I.D’s 520ERV7 is the chosen chain of MotoGP, Superbike, and road racing teams alike.
Upgraded from the 520ERV3, the 520ERV7 boasts a 3% higher tensile strength, a 13% longer chain life and less friction due to X-Ring improvements.
Flagship model for street bikes and enduro riding
Bob's Opinion on these.
" I have used the ERV chains for years now and have yet to find a stronger race chain which is why so many top race Teams use them. To give you an idea over a 4 day trip to Spain in a UK race weekend wont have to adjust my chain once ! and that's a bike that's go 212 BHP at the rear wheel. The Erv-7 is the latest version in the range and in my opinion the best yet. "