CYLINDER FULL KIT 72MM YAMAHA YZ 2T 250 99-23, CYLINDER WORKS 21009-K01 295CC BIG BORE, (Piston included)

• Kit comes with everything you need in one box for a top-end rebuild including cylinder head, power valves, all gaskets & O-rings, and a hand-matched Vertex big bore piston made from the highest quality 2618 aluminum alloy for superior strength and durability.
• Nickel silicon carbide (NSC) electroplate bore allows for tighter tolerances, lower friction, and extreme durability.
• True bolt-on application without further modifications to the engine.
• Power increase throughout the entire RPM range.
• +5.6mm bore increases displacement from 249cc to 295cc
• OEM in appearance but a fraction of the price.