Description
If you’re running a 51-tooth rear sprocket, you’re prioritizing top-end speed and efficiency on your KTM—but a steel sprocket will cost you performance through added rotational mass. The Renthal 51-Tooth Ultralight Rear Sprocket cuts that weight by 66% while maintaining the durability you need for consistent power delivery, meaning sharper acceleration and more responsive suspension feel lap after lap. Built from 7075-T6 aluminum and precision CNC-machined with self-cleaning mud grooves, this sprocket eliminates the grit that degrades performance and shortens component life.
- Tooth Count: 51
- Chain Size: 520
- Material: 7075-T6 aluminum alloy
- Weight: ~1.00 lbs
- Manufacturing: CNC-machined, tight tolerances
- Weight Advantage: 66% lighter than steel
- Mud Grooves: Self-cleaning design
- Fitment: KTM-specific; verify model compatibility
- Installation: Bolt-on replacement
- Colors: Multiple anodized finishes available






