Skip to Main Content

RPM Members Are Getting 10% Cash Back On ALL Purchases! Join & Save

Search Suggestions
Menu

Product Details

S&S 131" Big Bore Stroker Cylinder & Piston Kits For Harley Milwaukee-Eight

S&S has been building big bore kits forever and has it down to an absolute science. The Milwaukee Eight platform has opened up a whole new level of performance. Combining a newly design forged piston with their 4.25” cylinders to net a tire melting 131 cubic inches when paired with their stroker crank. These big bore kits and cranks are built to much tighter tolerarances and with higher quality materials than the factory parts making them a solid platform for massive power.

Features:

  • 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

Note: Must be used with S&S stroker flywheels to achieve 131" displacement

Made in the USA
Product Style RevZilla Item # Store Sku MFR. Product # Availability
Product Style Black no Highlight RevZilla Item #10023682 Store Sku MFR. Product #910-0763 AvailabilityIn Stock: Ships within 24 hours
Product Style Black w/ Highlight RevZilla Item #10023681 Store Sku MFR. Product #910-0762 AvailabilityOnly 3 Left: Ships within 24 hours
Product Style Granite w/ Highlight RevZilla Item #10023683 Store Sku MFR. Product #910-0764 AvailabilityOnly 1 Left: Ships within 24 hours
This product is vehicle specific.
Select a vehicle to ensure fitment.
This Product Fits
Harley Davidson
Electra Glide Standard FLHT 2019, 2020, 2021, 2022
Electra Glide Ultra Classic FLHTCU/I 2017, 2018, 2019
Electra Glide Ultra Limited FLHTK 2017-2024
Electra Glide Ultra Limited Low FLHTKL 2017, 2018, 2019
Freewheeler FLRT 2017-2025
Road Glide 3 FLTRT 2023, 2024, 2025
Road Glide FLTRX 2017-2023
Road Glide Limited FLTRK 2020, 2021, 2022, 2023, 2024
Road Glide Special FLTRXS 2017-2023
Road Glide ST FLTRXST 2022, 2023
Road Glide Ultra FLTRU 2017, 2018, 2019
Road King FLHR/I 2017-2022
Road King Special FLHRXS 2017-2025
Softail Breakout 114 FXBRS 2018, 2019, 2020
Softail Breakout 117 FXBR 2023, 2024, 2025
Softail Breakout FXBR 2018, 2019
Softail Deluxe FLDE 2018, 2019, 2020
Softail Fat Bob 114 FXFBS 2018-2023
Softail Fat Bob FXFB 2018, 2019
Softail Fat Boy 114 FLFBS 2018-2024
Softail Fat Boy FLFB 2018, 2019, 2025
Softail FXDR 114 FXDRS 2019, 2020
Softail Heritage Classic 114 FLHCS 2018-2024
Softail Heritage Classic FLHC 2018, 2019, 2020, 2021, 2025
Softail Low Rider FXLR 2018, 2019, 2020
Softail Low Rider S FXLRS 2020-2025
Softail Low Rider ST FXLRST 2022, 2023, 2024, 2025
Softail Slim FLSL 2018, 2019, 2020, 2021
Softail Sport Glide FLSB 2018, 2019, 2020, 2021
Softail Standard FXST 2020, 2021, 2022, 2023, 2024
Softail Street Bob 114 FXBBS 2021, 2022, 2023, 2024
Softail Street Bob FXBB 2018, 2019, 2020, 2025
Street Glide FLHX/I 2017-2023
Street Glide Special FLHXS 2017-2023
Street Glide ST FLHXST 2022, 2023
Tri Glide Ultra Classic FLHTCUTG 2017-2025
Product Description
Part Numbers
Fitment
0 Customer Reviews
3 Questions & 1 Answers
Join now & get rewarded!

Get Free 2-Day Shipping and $15 + 5% RPM Cash on this order.

Already enrolled in RPM? Link your existing membership here.

Related Videos

The Indian Larry Twisted Frame Chopper | J&P Custom Motorcycle Builds

150-Horsepower Harley-Davidson | J&P: Custom Motorcycle Builds

124 Cubic Inch Twin Cam FXR | J&P: Custom Motorcycle Builds

The First 8 Things You Should Change When Buying a Harley Davidson

Reviews & Questions

$39.99/yr.
Spend Less. Ride More.
  • 5% RPM Cash Back*
  • 10% Off Over 70 Brands
  • $15 in RPM Cash When You Join
  • Free 2-Day Shipping & Free Returns*
  • And more!
Become a member today! Learn More