PBR Standard C45 Steel Rear Sprocket 289 - 520 289 53 C45 yamaha-ty-175-175-1981-esi4341987 - Adjuster at the wrist:

- Adjuster at the wrist: Yes

Flexible circuit function – control what you want on which output you want

Ventilation: Ventilation panels on the chest area

fiber and resin as processed to achieve exactly the right thickness and density to give Optimal filtration

Chain pitch: 415

PBR Standard C45 Steel Rear Sprocket 289 - 520 289 53 C45 yamaha-ty-175-175-1981-esi4341987 - Adjuster at the wrist:Race Experience Thanks to Many Years of Competition Experience, PBR Developted A Wide Range of High Quality Sprocks in Collaboration with Top Teams. High Quality Steel Alloy 18NCD5high Wear Resistance Reduces High Precision Manufacturing Chain Pitch: 520. 0 Color: Black Material: Steel Rear Teeth: 53. 0 Rear Type: 289 REAR Version: Standard