MCS-931686 - All AFAM steel rear sprockets are manufactured in C45N steel and the teeth are induction hardened. This combination coupled with high quality chain guarantees high mileage. Perfectly round; flat and concentric; possessing the unique AFAM tooth profile mak

Fitment:
KTM: 05-07 640 Adventure; 98-04 640 Adventure-R; 04-07 640 Duke II; 08-11 SMC 690; 12-13 SMC 690 R; 14-21 SMC 690 R ABS