Set includes:
- 4 forged pistons
- 4 sets of rings
- 4 piston pins
- clips
Wiseco forged 86.50mm alloy piston set. These pistons allow maximum flow around the valves, and feature a Piston Crown shape to promote Intake charge efficiency resulting in more added power. Wiseco pistons also feature a skirt profile to optimize squish or quench during the compression and combustion cycle resulting in resistance to detonation and pre-ignition, therefore increasing the engineâs longevity. Pistons are precision machined and have an excellent surface finish. The ring groove are CNC machined with tight tolerances. The included piston pin are 9310 low carbon hardened steel and the pin clips are Spirolox featuring chrome silicon material for excellent yield strength. For 2008 to 2014 Yamaha 1.8L DOHC SHO/SVHO Waverunner engines in FZR, FZS, FX watercrafts. Piston Specs: Bore : 86.50mm / 3.4058" (standard bore) Compression Height : 33.02mm / 1.300" Weight : +/-367g ea Compression : 9.5:1 Piston Pin specs Part # S722 Pin Diameter : 22mm Length : 59.99mm / 2.362" Wall thickness : 5.72mm / 0.225â? Piston Rings 8650XX 86.50mm
