Description
The ProX Piston Kit for Yamaha 701 1.00 offers a one millimeter oversize option for engines that have experienced more substantial wear, prior overbores, or damage that smaller sizes cannot correct. At this stage, precise machine work and clearances become even more critical, and ProX responds with OEM style materials and machining quality. This kit supports a deeper rebuild while maintaining the proven character of the 701 engine.
- 1.00 mm oversize piston kit targeted at Yamaha 701 engines needing a larger overbore.
- Kit components include oversize piston, rings, wrist pin, and circlips for a complete top end replacement.
- Produced from low expansion, low friction alloy and machined on advanced CNC equipment for dimensional accuracy.
- Designed to operate at recommended clearances in cylinders bored and honed to the 1.00 mm specification.
- Suitable for skis used in demanding freeride, recreational, or light competition environments.
When installed correctly, this ProX kit can revive engines that might otherwise be considered at the end of their service life, restoring good compression, cleaner running, and smoother power delivery. It is a practical way to continue using existing cylinders while ensuring high quality internal components. The ring pack is tuned to seat effectively in a properly finished bore, helping maintain sealing over time.
Rebuilders must verify bore wall thickness, inspect the crankshaft, bearings, and cases, and ensure that the cooling and oiling systems are functioning well. Use new gaskets, replace questionable seals, and clean all parts thoroughly. Following the manufacturer recommended break in and torque procedures will allow the ProX 1.00 mm oversize piston kit to deliver reliable, enjoyable Yamaha 701 performance for many more hours on the water.
