Description
The ProX Piston Kit for Yamaha GP1300R 83.92 mm C size is aimed at cylinders that gauge at the larger end of the OEM tolerance range. Selecting the proper C grade piston maintains suitable clearance, limits piston noise, and still supports strong ring sealing in demanding conditions. It is a practical solution for refreshing engines that remain within service limits but show normal wear.
- 83.92 mm C size piston kit for Yamaha GP1300R engines with larger standard bore measurements.
- Kit contains C size piston, ring set, wrist pin, and circlips to renew one cylinders piston group.
- Uses a durable low expansion, low friction alloy for stable operation during long high load runs.
- Precision CNC machining controls skirt, crown, and ring groove geometry for consistent performance.
- Designed for riders who run their GP1300R hard but still expect OEM level reliability.
When matched to a correctly prepared C?class cylinder, this ProX kit can restore compression, improve throttle response, and smooth overall engine character. The rings are designed to seal effectively at slightly larger clearances, making them well suited to higher hour engines that still meet spec. The result is a strong, clean running ski that feels closer to new.
Builders should verify C sizing with accurate bore measurements, check ring end gaps, and confirm piston to wall clearance before final assembly. Replace gaskets and seals, examine crankshaft and bearings, and ensure cooling and fuel systems are functioning as intended. With careful break in and quality two stroke oil, the ProX 83.92 mm C size GP1300R piston kit can support many more hours of confident riding.
