The biggest Big Bore possible with a slip in kit! The S&S 4.320" bore cylinder kit takes your 107" M8 to 129" and the 114" to 132"
Huge bore increase means huge power increase
Works with stock crankcases (no machine work)
Powder coat finish matches factory finish
MLS (multi-layered steel) head gaskets
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Big Bore Kit to power up your Milwaukee Eight Engine to another monster.
107Ci is 129Ci and 114Ci is the lineup of 132Ci.
Compatible with factory crankcases, and the original engine height remains intact.
Made in the USA