Bore Size: 53.95 mm Replace OE P/N: Piston (Std) UR PURPLE 1C3-11631-01-D0, 1C3-11631-03-D0 Item fits: YZ125 05-22 YZ 125X 20-22 Item includes: Piston w/ RIK ring x 1 set Feature: ★ Made In Taiwan ★ A390 aluminum alloy ★ Hard Anodize on crown and side for ignition and combustion resistance ★ MoS2 Skirt coating reduce friction and improve wear ★ RIK Piston Ring: most well-know manufacturer in the industry ★ Cast piston has super-high silicone content for additional strength
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