It should be shortened according to the pinion/sprocket combination.
RACING ROAD D.I.D. 520 ERV-7
The unique DID 520 ERV7 racing chain is the result of years of technical studies and development on the world class MOTO GP and SBK circuits.
The close cooperation between the R&D (Research and Development) department of Daido Kogyo Co Ltd., the Yamaha Racing Team Moto Gp and the Valentino Rossi WORLD CHAMPIONSHIPS MOTO GP rider, led to the development of this particular product that ranks at the top as performance in the racing industry.
Compared with the current production of ER Exclusive Racing D.I.D chains for SBK and MOTO GP, the D.I.D 520 ERV-3 has markedly superior performance:
