Bore size 81

Thumb protection: Memory Foam

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premium feel

JT SPROCKETS Racelite Aluminium Black Rear Sprocket 897 - 520 JTA897.50BLK derbi-senda-racing-50-sm-50-2020-esi1221818 Bore size 81With the Leading Edge Edge Technology and Using Only the Highest Grade of Special Steel Alloys, JT Sprock's Produce A Full Range of Superior Quality Motorcycle Front and Reary Sprocks. Aviation Grade 7075 T6 Aluminum Alloy (Ergal) for Lightweight Competition Sprock Chain_pitch: 520. 0 Color: Black Material: Aluminum rear_prolet_teeth_count: 50. 0 REAR_PROET_TYPE: 897 REAR_PROET_SSION: Ultra Light Hard Anodized