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DescriptionPBR Steel Standard Rear 4729 - 428 Sprocket
Product details :
Features
The PBR standard steel sprocket 4729 - 428 is a transmission part designed for roadsters seeking a robust and reliable rear sprocket. Drawing from PBR's competition expertise, this sprocket combines carefully selected materials and industrial standards to withstand daily road use.
Manufacturer reference: 4729 37 C45
Brand: PBR
Material: 18NCD5 steel alloy
Number of teeth: 37 teeth
Chain pitch: 428
Color: black (surface coating)
Type: standard
PBR: resistance to corrosion and abrasion, reduced friction, and strict manufacturing processes for a regular and durable tooth profile.
Ideal for replacing the rear sprocket in a chain kit, it is suitable for riders who want a race-adapted original part without modification. Compatible with several recent 125 cc roadsters, it fits notably the BENELLI TORNADO NAKED T 125 (2025), KEEWAY RKF 125 (2023), and BENELLI BN 125 (2025). Before installation, check the exact compatibility with your vehicle (axle, spacing, and number of links).
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