- Big Bore Kit
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2010-2017 CRF250R (+3.2 MM 270cc) Cylinder Works Big Bore Kit 13.21 Honda
+3.2 MM Changes to 270CC. Ready-to-install, direct bolt-on cylinders require no replating and look virtually identical to the OEM. Vertex forged 80mm 13.2:1 compression piston. Nickel Silicon Carbide plated for long life. Honed to exact size for easy piston installation.
Big bore cylinder kits come complete with gaskets, cylinder, piston, rings, pin and clips. These kits are great for the vet racer or pro who might be a bit ethically challenged as the kit is complete Stealth. The complete kit comes with a new cylinder matched. Piston kit and full top end gaskets.
This is the entire cylinder no core charge or sleeving required, true bolt on equipment. Check out are other listings for gaskets, big bore hotcams cams, cranks, exhaust and may other of your ATV and bike needs.