Chrome-molybdenum steel pinion 
 Chain version 520 & 525 
 
 for model: 
RSV SP (BJ: 98-02)
RSV 1000 Factory (BJ: 06-07)
RSV R (BJ: 03)
RSV 1000 R (BJ: 01-02)
RSV 1000 R (BJ: 04-08)
RSV 1000 R Dream (BJ: 04-05)
RSV 1000 R Factory (BJ: 04-08)
RSV 4 1000 R (BJ: 09-10)
RSV4 APRC R - FACTORY (BJ: 11-14)
RSV4 1000 RR (BJ: 15-18)
RSV Tuono 1000 (BJ: 02-05)
Tuono 1000 R (BJ: 06-09)
Tuono 1000 R Factory (YOC: 07-09)
Tuono V4R APRC 1000 (BJ: 11-14)
Tuono 1100 V4 (BJ: 15-17)