ART Aluminium Ultra-Light Self-Cleaning Rear Sprocket 897 - 520 ART-897A-51-BLU italjet-dragster-50-50-1998-esi4706596 Two-layer's foam (Dual-Stage) - Combines

Two-layer's foam (Dual-Stage) - Combines maximum filtration and air flow

The upper of the shoe has been angled to fit the rider's ergonomic position

smooth and reliable disc brake lock for daily use

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ART Aluminium Ultra-Light Self-Cleaning Rear Sprocket 897 - 520 ART-897A-51-BLU italjet-dragster-50-50-1998-esi4706596 Two-layer's foam (Dual-Stage) - CombinesUltra Light self cleaning Sprockets, Extremely Lightweight and Durable; Composed of Tough 7075 T65A Aluminum for Optimized Performance. Chain_pitch: 520. 0 Color: Blue Material: Aluminum rear_prolet_teeth_count: 51. 0 REAR_PROET_TYPE: 897 REAR_PROET_SSONE: ULTRA LIGHT SELF CLEANING