131" Stroker Cylinder and Piston Kit with Highlighted Fins for 2017-'20 M8 Models
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131" Stroker Cylinder and Piston Kit with Highlighted Fins for 2017-'20 M8 Models

Item #: 910-0762
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$1,364.95
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S&S has been building big bore kits since the 60s and has it down to an absolute science. Our latest efforts are aimed at the Milwaukee Eight® platform (2017 and newer big twins) and open up a whole new level of performance for these engines. Combining a new design forged piston with their 4.25” cylinders to net a tire melting 131 cubic inches when paired with their 4.625” stroker crank. We build our big bore kits and cranks to much tighter tolerarances and with higher quality materials than the factory parts. This new piston/cylinder kit will be a solid platform for massive power.

Features & Benefits

  • Huge displacement increase means huge power increase
  • Works with stock crankcases
  • Original engine serial numbers are retained
  • Powder coat finish match factory finish, giving the bike a “sleeper” advantage
  • .045" MLS (multi-layered steel) head gaskets
  • Retains stock engine height
  • Includes 131" Cam Cover Badge
  • Must be used with our stroker flywheels to achieve 131" displacement (part #s 320-0605, 320-0620)

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Disclaimer FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES WHICH MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY.