Vertex 590395000001 Piston Ring Review

Specs: Piston Ring, Compression Ratio: 12.5:1, Displacement: 426 cc, Piston Diameter: 94.930mm, Size Over Standard: STD mm. Meets or Exceeds OEM Specs for Fit and Performance. Compatible With/Replacement For: Yamaha WR 450 F 2003-2015, YFZ 450 2004-2009, YFZ 450 R 2009-2014, YFZ 450 X 2010-2011, YZ 450 F 2003-2009. 1-year warranty protects you after your purchase. We're confident that our products will work flawlessly once installed in your vehicle. But in a rare case that it does not, we'll replace it anytime within one year of your order. If you have a problem, we will take every step to assist you, contact us for a replacement. 100% New aftermarket Piston Ring built to meet OEM specifications.