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HOME » 131 Speed Shop Kit

Revolution Performance 131" Speed Shop Kit

(Fits Twin Cam style motorcycles with 4.625" stroke crankshaft)


  • Revolution Performance 131" Monster Big Bore Kit
  • Revolution Performance Monster CNC Cylinder Head Service (fully ported, larger valves, .675 lift Dual Coil Spring kit)
  • New 4.625" Stroker Flywheel Assembly
  • Upgraded Performance Cam Shaft
  • New Roller Rocker Arms
  • Smith Brothers Adjustable pushrods with tubes
  • Feuling Performance Cam Chest Components (Cam Plate, Oil Pump, Tensioners, and Bearings)
  • Cometic Cpm[;ete Gasket Kit
  • Upgraded Cylinder Studs
  • Break-In Engine Oil
  • Revolution Performance Crankshaft Services(Balance, True, Plug and Weld with H-Beam Connecting Rod Upgrade)
  • Revolution Performance Complete Crankcase Services which includes (Case Boring, Timken Bearing Conversion, All new bearings and assembly)

Optional In-House Assembly and Services

***Note: Any additional parts, repairs or services will incure additional costs***

***Note: Complete engine shipping assistance available, please call for options***

For questions on additional upgrades to our Speed Shop Kits, please contact our sales technicians directly at: 1-866-892-2109 M-F 8:30 A.M. - 5:00 P.M. CST.

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