Description
If you’re running a 520 chain on your BMW, upgrading to a lightweight rear sprocket is one of the fastest ways to improve acceleration and reduce unsprung weight at the rear wheel. The Renthal 45T sprocket cuts 66% of the mass compared to steel alternatives, delivering measurable gains in throttle response and handling without sacrificing durability. Built from aerospace-grade 7075-T6 aluminum and finished with self-cleaning mud grooves, this is precision engineering that translates to real-world performance on track or trail.
- Material: 7075-T6 aluminum alloy
- Tooth Count: 45T
- Chain Size: 520
- Weight Savings: 66% lighter
- Self-Cleaning Grooves: CNC-machined
- Finish: Anodized
- Position: Rear mounted
- Fitment: BMW 520 chain compatible
- Installation: Bolt-on
- MPN: 490U-520-45P-HA
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