Piston set Yamaha Waverunner 1.8L SHO SVHO 86mm Forged Piston Set - 11.6:1 Compression Ratio

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Product Overview

Set includes 4 forged pistons, 4 sets of rings, 4 piston pins and clips.
Wiseco forged 86mm 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 engine’s 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.

Piston Specs:
Bore : 86.00mm / 3.3858" (standard bore)
Compression Height : 33.02mm / 1.300"
Weight : +/-367g ea
Compression : 11.6:1 

Piston Pin Specs:
Part # S722
Pin Diameter : 22mm
Length : 59.99mm / 2.362"
Wall thickness : 5.72mm / 0.225”

Piston Rings:


  • 2008-2016 Yamaha FX Cruiser 1812cc (HO/SHO/SVHO)
  • 2008-2016 Yamaha FX 1812cc (HO/SHO/SVHO)
  • 2009-2016 Yamaha FZR 1812cc
  • 2009-2016 Yamaha FZS 1812cc
  • 2011-2016 Yamaha VXR 1812cc
  • 2011-2016 Yamaha VXS 1812cc


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