Description
If you’re running a Yamaha TTR90 and want measurable gains in power and throttle response, a high-compression piston kit is one of the most direct upgrades available. The Wiseco 47.50mm 11:1 kit delivers a noticeable bump in output while maintaining the reliability you need for consistent track performance or trail riding. High-silicon aluminum construction means this piston handles the thermal stress of elevated compression without sacrificing durability.
- Bore: 47.50mm
- Compression Ratio: 11:1
- Material: High-silicon aluminum alloy
- Fitment: Yamaha TTR90 (2000-2007)
- Installation: Requires engine disassembly
- Weight: Reduced vs. OEM
- Heat Resistance: Superior thermal stability
- MPN: 4840M04750
