Seller notes

DYNAMIC RACING / 2019-2025 YAMAHA YZ250F 80mm 270cc BIG BORE PISTON KIT All in one bolt on kit! You can expect an easy 3-4hp from this kit. And another 1-2 with a good dyno tune. One standout feature of this piston kit is its innovative crown design, which enhances combustion efficiency and delivers improved power output. Combined with a custom DLC-coated wrist pin and specially designed rings, this kit ensures premium durability and performance. Kit Includes: -14.7:1 Compression Ratio JE Forged...

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