REVOLUTION PERFORMANCE RP201-618W Monster Big Bore Kit 143" 

143” KITS FOR 17-23 M-EIGHT 114”/ 117” 4 1/2” BORE;
4 1/2” STROKE; 11.4:1cr (WITH 88cc HEADS)
0931-1054 Black

• Aerospace-grade all-aluminum cylinders with nickel-silicon-carbide (NSC) electroplated bores

• No sleeving allows for larger bore sizes

• NSC-plated cylinders have less friction for increased horsepower, lower engine temperatures and a longer lifespan

• True bolt-on kit that delivers major power durability and strength

• Includes pair of all-aluminum NSC-coated bore cylinders, custom-forged pistons with high-tension rings specifically designed for NSC cylinders and a head/base gasket set

• Replacement gasket sets available separately

• Made in the U.S.A.