PBR Standard C45 Steel Rear Sprocket 475 - 520 475 48 C45PBR, the experience from the competition Thanks to its long experience acquired in competition in collaboration with great teams, PBR offers a range of high quality sprockets and crowns. Very high quality 18NCD5 steel alloy Very resistant to corrosion and abrasion Reduced friction Very strict manufacturing process Chain pitch: 520. 0 Material: Steel Rear teeth: 48. 0 Rear version: Standard
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