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S&S 4" big bore cylinder and piston kit boosts Twin Cam 96/103 Harley-Davidson big twin engines to 110" displacement. This kit does not require any machining, rebalancing or engine removal, and includes just about everything you'll need to complete the installation. These are biggest cylinder bore that can be installed in a stock crankcase without machining!
Bolt-in kit requires no machining, balancing, or splitting the crankcases
Converts Twin Cam 96 and Twin Cam 103 engines to 110 cubic inches of power
Complete kit includes cylinders, pistons, cylinder gaskets, and instructions
Powder coated cylinder finish matches stock finish of your bike
Made in the USA
Product Note:
Specification
Details
Bore
4 in.
Color
Varies (make selection above)
Compression Ratio
10.5:1
Country of Origin
USA
Displacement
110 CI
Engine Type
Twin Cam 96 / Twin Cam 103
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
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
Awesome
By Steven C. on
Verified Purchaser
Awesome upgrade from 103. Very high quality.
S&S Sidewinder Kit
By Daniel S. on
Verified Purchaser
My hp raised from 84 to 97 and torque from 100fp to 123. Huge increases for a motorcycle.
Sidewinder Kit
By Anthony H. on
Verified Purchaser
Solved my issue perfectly.
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Questions & Answers
It says just about everything you need what else would I need to complete the job?
By Anon.
If I bought this kit what else would I need to get the bike running besides oil new filters things like that
About the only thing you'd really want to add to your build is a proper tuner or fuel management system. The change in fuel mapping requirements would be too great for the OEM ECU to keep up. To do it right, we highly recommend that you use a competent dyno technician to help with this along with a fuel tuning module of some sort.
Are they wrinkle black or naked steel?
By Jway
The listing says powder coated but the picture shows naked steel.
Both the black and silver cylinders have a powder coated finish on their fins, specifically the horizontal surfaces. The outer-facing edges of the fins are finish machined after powder coating to produce the silver contrasting edges you see on both, the black, and silver color options.
Compression, 9.7:1 stock comp on a 103 ci this kit say 10.5 that alone will it jump hp up ?
By Zee girl HD
9.7,1 stock comp on a 103 ci this kit say 10.5 that alone will it jump hp up ? I don't the extra 7 cubic inch would do anything?
Yeah, higher compression and bigger bore is going to result in a noticeable jump in power. Especially when it the bike is tuned properly to add the fuel needed it should make some good numbers.
I have heard there is problem with failure putting these on a 96 when having to high of compression. Have your company had problems with this?
By al
S&S does recommend that this kit not be used if you're planning on having higher than 10:1 compression ratio for Trike or Tri Glide models. They also mention that it is not compatible with the S&S Super Stock 79cc heads.
Are the exhaust port on these cylinders in the same as place as the 96ci twin cam motor for the 07 streetglide
By Dave
This kit would not have the cylinder heads included, only the cylinders. You can use your stock heads with this kit.
Will the stock heads fit the new jugs?
By Anon.
Yes, you are able to use the stock cylinder heads on the cylinders in this kit.
Can you use stock heads with this
By Anon.
Yes, you can use stock heads with this kit.
Will this kit require a different compensator.
By Ray S.
No, there's no requirement to use a different compensator sprocket in order to fit this kit to any of the machines listed in our fit guide.
Have a question? Please ask our experts and customers who own this product.
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