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S&S Cycle 132" Big Bore Kit For Harley 114" Milwaukee Eight 2017-2023

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This item is available as a Blem/Refurb. These are items that cannot be sold as "New" merchandise and are limited to stock on hand. See the product details for a description of the product's condition.

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This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

S&S Cycle 132" Big Bore Kit For Harley 114" Milwaukee Eight 2017-2023 Resources

S&S Cycle 132" Big Bore Kit For Harley 114" Milwaukee Eight

Turn your 114 cubic inch Milwaukee Eight into a 132 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.


  • 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  
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Please review this product's fitment notes & exceptions prior to purchase: Add to Cart

This product is vehicle specific. Click here to select your vehicle to ensure fitment.

Fitment Notes & Exceptions
  • Fits models with 114" Milwaukee Eight engines only

This Product Fits:

Harley Davidson
Road Glide Special FLTRXS 2017-2023
Road King Special FLHRXS 2017-2023
Softail Breakout 114 FXBRS 2018, 2019, 2020
Softail Breakout 117 FXBR 2023
Softail Fat Bob 114 FXFBS 2018-2023
Softail Fat Boy 114 FLFBS 2018-2023
Softail FXDR 114 FXDRS 2019, 2020
Softail Heritage Classic 114 FLHCS 2018-2023
Softail Low Rider S FXLRS 2020, 2021, 2022, 2023
Softail Street Bob 114 FXBBS 2021, 2022, 2023
Street Glide Special FLHXS 2017-2023
Product Style Item # Store SKU Manufacturer Product # Availability
Product Style Non-Highlighted Fins Item # 10281740 Store SKU Manufacturer Product # 910-0846 Availability In Stock: Ships within 24 hours
Product Style Black Granit Highlighted Fins Item # 10312005 Store SKU Manufacturer Product # 910-0847 Availability In Stock: Ships in 1-2 business days
Product Style Highlighted Fins Item # 10281739 Store SKU Manufacturer Product # 910-0845 Availability In Stock: Ships in 1-2 business days
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