PBR Steel Standard 2129 - 525 Gearbox output pinionRef : PBR00680A / 1077580001

Born from PBR's competition experience, this standard steel sprocket 2129 is designed for the training of roadsters equipped with a 525 pitch chain. Its 15-tooth design directly influences the gear ratio and engine behavior: acceleration, low-end response, and top-end can be adjusted according to your setup.

• Manufacturer reference: 2129 15 18NC
• Material: Steel (18NCD5 alloy)
• Number of teeth: 15
• Chain pitch: 525
• Type: Sprocket 2129 – standard version

The 18NCD5 steel alloy used offers excellent resistance to corrosion and abrasion, qualities sought after in primary transmission. The strict design and manufacturing process ensure a consistent tooth geometry, minimizing friction and contributing to a smooth ride. PBR leverages its competition collaborations to provide a sprocket that meets the demands of riders who maintain their engine and want a robust replacement part.

Common compatibilities: roadsters and models listed by the manufacturer, including certain versions of BENELLI LEONCINO 800 (2025) and TRE-K 899 (2017). Check compatibility with your machine before installation.