My Account Support

Free Shipping.

Expert Service.

Call 888-575-6570

S&S 107" Bolt-In Big Bore Kit

(1 review)

Item: 359415

$1151.96

Select Your Vehicle - Fitment Guaranteed

Need Help?

888-575-6570

Free Shipping

Fitment Guaranteed

Description Fitment Reviews Q&A

S&S 107" Bolt-In Big Bore Kit

  • 3.937 inch diameter bore
  • Cylinder and piston kits make going to the maximum bores size easy
    • No machining required
    • Stock engine height is maintained
    • 11 fin cylinder design closely resembles OEM shape and come pre-finished and ready to install
  • Increased fin area for better heat dissipation
  • Centrifugal cast, gray iron liner features 40,000 psi tensile strength for superior wear and performance
  • CP Pistons are recognized as industry leaders, and provide exceptional wear, performance and noise characteristics

Kit Contents:

  • S&S cylinders with gaskets
  • Piston set with rings, wristpins, and wristpin clips

Made in the USA

Specification Details
Bore 3.937 in.
Color Varies (make selection above)
Compression Ratio 10.5:1
Country of Origin USA
Displacement 107 CI
Engine Type Twin Cam
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
  • FLD Dyna Switchback 2012-2016
  • FLHR Road King 2007-2016
  • FLHRC Road King Classic 2007-2013
  • FLHRS Road King Custom 2007
  • FLHT Electra Glide Standard 2007-2009
  • FLHTC Electra Glide Classic 2007-2013
  • FLHTCU Ultra Classic Electra Glide 2007-2016
  • FLHTCUL Electra Glide Ultra Classic Low 2015-2016
  • FLHTCUTG Tri Glide Ultra Classic 2009-2016
  • FLHTK Electra Glide Ultra Limited 2010-2016
  • FLHTKL Electra Glide Ultra Limited Low 2015-2016
  • FLHX Street Glide 2007-2016
  • FLHXS Street Glide Special 2014-2016
  • FLHXXX Street Glide Trike 2010-2011
  • FLRT Freewheeler 2015-2016
  • FLS Softail Slim 2012-2017
  • FLSS Softail Slim S 2016-2017
  • FLSTC Heritage Softail Classic 2007-2017
  • FLSTF Softail Fat Boy 2007-2017
  • FLSTFB Softail Fat Boy Lo 2010-2016
  • FLSTFBS Softail Fat Boy S 2016-2017
  • FLSTN Softail Deluxe 2007-2017
  • FLSTSB Softail Cross Bones 2008-2011
  • FLSTSC Softail Springer Classic 2007
  • FLTR Road Glide 2007-2009
  • FLTRU Road Glide Ultra 2011-2013, 2016
  • FLTRX Road Glide 2015-2016
  • FLTRX Road Glide Custom 2010-2013
  • FLTRXS Road Glide Special 2015-2016
  • FXCW Softail Rocker 2008-2009
  • FXCWC Softail Rocker C 2008-2011
  • FXD Dyna Super Glide 2007-2010
  • FXDB Dyna Street Bob 2007-2017
  • FXDBC Dyna Street Bob Limited 2016
  • FXDBP Dyna Street Bob 2016
  • FXDC Dyna Super Glide Custom 2007-2014
  • FXDF Dyna Fat Bob 2008-2017
  • FXDL Dyna Low Rider 2007-2009, 2014-2017
  • FXDLS Dyna Low Rider S 2016-2017
  • FXDWG Dyna Wide Glide 2007-2008, 2010-2017
  • FXS Softail Blackline 2011-2013
  • FXSB Softail Breakout 2013-2017
  • FXST Softail Standard 2007
  • FXSTB Softail Night Train 2007-2009
  • FXSTC Softail Custom 2007-2010
  • FXSTD Softail Deuce 2007

Customer Reviews

Write Review

Nice upgrade

By   on 

On mile 300 of break in. Also did port/polish bigger valves and springs in head with ez start .585 cam controlled with PC5. Noticeable difference in power so far but still taking easy and haven't dynoed yet. Getting 31mpg so far, expect much better after tune.

How many stars would you give this product? Write a review.

Write Review

Questions & Answers

Ask Question

Have a question? Please ask our experts and customers who own this product.