124" Power Package for 2017-19 Harley-Davidson® M8 Models

124 Power Package banner Winter Power Package-Kit

Complete 124" Big Bore and Cam Chest Kits!

The S&S Power Package is the ideal combination of performance and savings, designed to transform your M8 without breaking the bank. For the latest generation HD’s, S&S is packaging their brand new 124” bolt in big bore kit with a 550 cam, cam plate and high flow oil pump as well as valve springs, lifters and pushrods. All kits are available with gear or chain drive cams and are designed to make big, reliable power with equally big savings.

107" to 124" Big Bore Kit:

  • Wrinkle Black Finish
  • Available With or Without Fin Highlighting
  • Bolt-On Kit — No Case Machining Required
  • 4.250" Bore
  • Forged Pistons
  • 11.1 Compression Ratio

Oil Pump/Cam Plate:

  • Precision Machined from Billet Aluminum
  • Passage Plugs Removable for Servicing
  • Independent Scavenge Sections for Flywheel Cavity & Cam Chest
  • Debris Screens in Both Scavenge Pickups
  • Magnet in Cam Chest to Help to Stop Debris from Entering Oil Pump
  • Increased Flow Capacity on Both Feed & Scavenge Side
  • Pressure Relief Valve is Adjustable with Unit Installed in Engine


  • Quickee Pushrods
  • Chrome or Gloss Black Pushrod Tubes Available


  • S&S Premium Tappets

Tappet Cuffs:

  • Hard Anodized Black Coating
  • Billet Aluminum Construction
  • Stronger than Stock Material Eliminates Distortion
  • Improve Tappet Stability in High Lift & High rpm Situations


  • S&S 550 Cam- Designed for Big Bore Applications
  • Available in Both Gear Drive & Chain Drive Variations
  • Gear Drive Kits Provide Improved Cam Timing Accuracy & Eliminate Stock Chain Tensioner
  • Gear Drive Kits Include Outer Drive Gears

Valve Springs:

  • High Performance Conical Single Wire Spring
  • Includes Top Collars, Keepers, & Valve Seals/Bottom Collars

Requirements: Harley-Davidson® M8 Head Bolts part # 10200303

Cooling SystemFinishDrivePushrod TubesPart # 
OilHighlighted FinsChainChrome310-1052
OilHighlighted FinsGearChrome310-1053
OilHighlighted FinsChainBlack310-1056
OilHighlighted FinsGearBlack310-1058
OilNon-Highlighted FinsChainBlack310-1057
OilNon-Highlighted FinsGearBlack310-1059
WaterHighlighted FinsChainChrome310-1050
WaterHighlighted FinsGearChrome310-1051
WaterHighlighted FinsChainBlack310-1054
WaterHighlighted FinsGearBlack310-1055
DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. Not legal for sale or use on any EPA pollution controlled motor vehicle.