Description
Stock pistons are a limiting factor when you’re pushing your TT-R250 to its limits. The Wiseco 73.50mm piston kit delivers the compression ratio and material science necessary for reliable power gains, whether you’re running harder jetting or higher octane fuel. This is a straightforward bolt-on upgrade that pays dividends in throttle response and longevity.
- Bore diameter: 73.50mm
- Compression ratio: 10.5:1
- Material: High-silicon aluminum alloy
- Oiling design: Horizontal slot-pin
- Dome profile: Optimized combustion chamber
- Fitment: Yamaha TTR250 1999–2006
- Installation: Requires engine disassembly
- MPN: 4689M07350
