S&S 124" Bolt-In Big Bore Kit

Item Number: 359414

5 stars 2 Reviews
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Product Description

S&S Cycle

S&S 124" Bolt-In Big Bore Kit

  • 4.250" bore
  • Forged pistons
  • 11.1 compression ratio with stock cylinder heads
  • Wrinkle black powder coated finish
  • Bolt-on kit requires no machining of stock components
  • Comes with gaskets, hardware and installation instructions
  • Made in the USA

Product Note: Does not fit 114 cubic inch models.

Spec Details
Bore 4-1/4 in.
Color Varies (make selection above)
Compression Ratio 11.1:1
Displacement 124CI
Engine Type Milwaukee Eight
Finish Powder Coated
Material Aluminum
Piston Type Forged
Stroke 4-3/8 in.

Vehicle Fitment

Fitment is guaranteed or your money back plus free return shipping. Don't waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Harley Davidson

  • FLDE Softail Deluxe 2018-2020
  • FLFB Softail Fat Boy 2018-2019
  • FLHC Softail Heritage Classic 2018-2021
  • FLHR Road King 2017-2021
  • FLHRXS Road King Special 2017-2018
  • FLHTCU Electra Glide Ultra Classic 2017-2019
  • FLHTCUTG Tri Glide Ultra 2018-2021
  • FLHTK Electra Glide Ultra Limited 2017-2018
  • FLHTKL Electra Glide Ultra Limited Low 2017-2018
  • FLHX Street Glide 2017-2021
  • FLHXS Street Glide Special 2017-2018
  • FLRT Freewheeler 2017-2021
  • FLSB Softail Sport Glide 2018-2021
  • FLSL Softail Slim 2018-2021
  • FLTRU Road Glide Ultra 2017-2019
  • FLTRXS Road Glide Special 2017-2018
  • FXBB Softail Street Bob 2018-2020
  • FXBR Softail Breakout 2018-2019
  • FXFB Softail Fat Bob 2018-2019
  • FXLR Softail Low Rider 2018-2020

Customer Reviews

Great Kit!

out of 5
5 stars

By on September 28, 2020

Fairly straight forward install. Great quality parts. Combined with an S&S 475c, SE 5.5 injectors, DJ TT, and a base map from DJ for PV, bike sounds and runs awesome.

5 stars
5 stars

S&S cycle 124 kit M8

out of 5
5 stars

By on February 13, 2021

Packaged very well, now the quality from s&s cycle is superb, now you do have to do your ring gaps and file them to get the proper fit. The gaskets are just as good if not better than OEM.

5 stars
5 stars

Questions & Answers