Clutch Weights System increases clamp-load by harnessing centrifugal force as engine RPM increases weight closer to the heel your engine will respond quicker and hit harder.Model Applicability :- DESTINI 125,DESTINI PRIME,DUET,MAESTRO,MAESTRO EDGE,MAESTRO EDGE 125,MAESTRO EDGE 125 FI,PLEASURE,PLEASURE+,PLEASURE+ XTEC,XOOM Part No-22535AAW000S