PBR Reinforced Aluminium Sprocket - 520 (manufacturer ref: 1031 40 LD): a sprocket designed for demanding roadsters. Machined from reinforced aluminium, it prioritises lightness without sacrificing strength, ensuring a clean transmission and simplified maintenance. Ideal for replacing an original sprocket or for fitting a 520 chain.
- Construction: reinforced aluminium, aluminium colour finish.
- Number of teeth: 40 teeth — suitable for the original ratios of the listed machines.
- Chain pitch: 520.
- Notable advantages: resistance to corrosion and abrasion, strict manufacturing process, and quality materials.
- Objective: to reduce friction in the transmission for controlled wear of the chain and sprockets.
Designed from PBR's racing experience, this sprocket benefits from rigorous quality controls derived from the racing environment, without unverified technical claims. It is aimed at riders looking for a reliable and lightweight wear part for their roadster, while adhering to manufacturer tolerances.
Main compatibilities: QJ MOTOR SRK 700 (2023, 2024, 2025 - 700 cm³). Always check the number of teeth and chain pitch before installation.