Description
If you’re running a 520 chain on your Yamaha, sprocket wear directly impacts acceleration, chain longevity, and overall drivetrain efficiency. The Renthal 49-Tooth Rear Sprocket delivers the durability and lightweight performance you need to maintain consistent power delivery and reduce unsprung weight, while its self-cleaning tooth grooves eliminate mud accumulation that typically accelerates wear. At roughly one pound, this 7075-T6 aluminum design offers the strength of steel without the rotational mass penalty—a meaningful advantage whether you’re competing or pushing hard on the trail.
Renthal engineered this sprocket with precision fitment for your Yamaha’s rear hub, making installation straightforward on models including the YZ125, YZ250, YZ250F, YZ450F, WR250F, and WR450F. The black anodized finish resists corrosion under muddy, wet, or salt-air conditions, ensuring consistent performance season after season.
- Chain Size: 520
- Tooth Count: 49
- Material: 7075-T6 aluminum alloy
- Weight: ~1.00 lbs
- Finish: Black anodized
- Position: Rear drive
- Weight Reduction: ~66% vs. steel
- Key Feature: Self-cleaning grooves
- Installation: Bolt-on fitment
- MPN: 150U-520-49GBBK
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