124" & 128" Winter Power Package for 2017 and up Harley-Davidson® M8 Models
Complete 124" and 128" 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” & 128" 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:
- 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
- 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
- 44% Flow Increase on Supply Side & 58% Flow Increase on Scavenge Side
- Pressure Relief Valve is Adjustable with Unit Installed in Engine
- Kits Now Include Updated Oil Pump with Groove for Optional OEM Oil Seal
Pushrods:
- Quickee Pushrods
- Chrome or Gloss Black Pushrod Tubes Available
Tappets:
- Hand Assembled to Exacting Tolerances
- Reduced Valve Train Noise from Start Up to Shut Down
- Close Tolerances for Low Leak Down Rates
- Fast Pump Up and Superior High RPM Performance
Tappet Cuffs:
- Hard Anodized Black Coating
- Billet Aluminum Construction
- Improve Tappet Stability in High Lift & High RPM Situations
Cam:
- 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
- Gear Drive Kits Include Outer Drive Gears
Valve Springs:
- High Performance Conical Single Wire Spring
- Includes Top Collars, Keepers, & Valve Seals/Bottom Collars
Cam Chain Tensioner:
- Comes with Chain Drive Kits
- Precision Machined from Billet Aluminum
- Thicker Shoe for Longer Wear
- Direct Chain Oiling
- Larger Piston for More Consistent Pressure
- Tighter Tolerances Improves Stability
Requirements: S&S Cycle Head Bolts for M8, part number 900-1006
114" to 128" Big Bore Kit:
- Wrinkle Black or Black Granite Finish
- Available With or Without Fin Highlighting for Wrinkle Black
- Bolt-On Kit — No Case Machining Required
- 4.250" Bore
- Forged Pistons
- 11.1:1 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
Pushrods:
- Quickee Pushrods with chrome covers
Tappets:
- S&S Precision 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
Cam:
- 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:
- Work well with cams up to .605 lift
- High Performance Conical Single Wire Spring
- Includes Top Collars, Keepers, & Valve Seals/Bottom Collars
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