S&S Cycle 129

Regular Price $442.73
Sale Price $442.73 Regular Price $2,213.64
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FortNine S&S Cycle 129

S&S Cycle 129

Regular Price $442.73
Sale Price $442.73 Regular Price $2,213.64
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S&S Cycle 129" Big Bore Kit For Harley 107" Milwaukee Eight

Turn your 107 cubic inch Milwaukee Eight into a 129 cubic inch monster. S&S Cycle has done it again with their bolt-on big bore kit featuring a 4.32” bore and 11:1 compression ratio. This cylinder and piston kit will accommodate a high lift cam and keep your Harley-Davidson M8 happy on pump gas. No case mods, no engine removal; just a massive set of jugs, designed, tested, and manufactured here in the USA.

Features:

  • 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 
  • 4.320" Bore 
  • Retains stock engine height 
  • Includes cubic inch cam cover badge 
  • Made in USA  
nn Made in the USAnn

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