S&S Cycle T124 Long-Block Engine Fits Harley-Davidson Twin Cam Dyna and Touring 1999-2017
S&S Cycle T124 Long-Block Engine Fits Harley-Davidson Twin Cam Dyna and Touring 1999-2017 - Image 2
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S&S Cycle T124 Long-Block Engine Fits Harley-Davidson Twin Cam Dyna and Touring 1999-2017 - Image 4
S&S Cycle T124 Long-Block Engine Fits Harley-Davidson Twin Cam Dyna and Touring 1999-2017 - Image 5
S&S Cycle T124 Long-Block Engine Fits Harley-Davidson Twin Cam Dyna and Touring 1999-2017 - Image 6
S&S Cycle T124 Long-Block Engine Fits Harley-Davidson Twin Cam Dyna and Touring 1999-2017 - Image 7
S&S Cycle

S&S Cycle T124 Long-Block Engine Fits Harley-Davidson Twin Cam Dyna and Touring 1999-2017

1 review|11 answered questions

Price range: $7,959.95 through $8,599.95

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SKU: SS-T124 Brand: S&S Cycle

S&S Cycle T124 Long-Block Engine Fits Harley-Davidson Twin Cam Dyna and Touring 1999-2017

Take a Twin Cam Dyna or Touring up to 124 cubic inches with a complete bolt-in S&S long-block. The T124 is a top-end and cam-chest assembly that drops onto an existing Twin Cam chassis crankcase, available across three platform groups and two cam grinds so the build matches the chassis and the riding style.

Key Features
  • Complete 124 cubic-inch Twin Cam long-block assembly, bolt-in onto an existing Twin Cam Dyna or Touring crankcase
  • S&S high-flow cylinder heads with S&S forged pistons in 124 cylinders
  • S&S 585 Easy Start cam or S&S 640 cam, per variation – 585 builds street-friendly mid-range, 640 builds stronger top-end pull
  • S&S TC3 oil pump and cam support plate
  • S&S valve train with premium tappets, tappet cuffs, and pushrods
  • Available in Silver, Wrinkle Black with Chrome, Stone Gray (2007-2016 Touring variations only), or all-Black Edition finish
  • Platform-specific variations cover 1999-2005 Dyna and 1999-2006 Touring (Twin Cam 88, excluding 2006 Dyna), 2007-2016 oil-cooled Twin Cam 96/103 Touring, and 2006-2017 Twin Cam 96/103 Dyna
  • Required gaskets and seals to complete the installation are included
  • Two-year S&S warranty
Technical Specifications
  • Displacement: 124 cubic inches
  • Cylinder Heads: S&S high-flow
  • Pistons: S&S forged
  • Camshaft: S&S 585 Easy Start or S&S 640, platform-specific grind
  • Oil Pump and Cam Plate: S&S TC3
  • Valve Train: S&S premium tappets, tappet cuffs, and pushrods
  • Warranty: 2 years
  • Country of Origin: United States
Fitment Notes
  • Compatible with select 1999-2017 Harley-Davidson Twin Cam Dyna and Touring chassis only.
  • 1999-2006 585 and 640 Cam variations fit 1999-2005 Dyna and 1999-2006 Touring with Twin Cam 88; the 2006 Dyna is excluded because it used the early-style Twin Cam 96 crankcase.
  • 2007-2016 Touring 585 and 640 Cam variations fit 2007-2016 Touring with the oil-cooled Twin Cam 96 or 103 engine.
  • 2006-2017 Dyna 640 Cam variations fit 2006-2017 Dyna with the Twin Cam 96 or 103 engine – this Dyna-specific variant covers the 2006 Dyna that the 1999-2006 variants exclude.
  • Excludes all Softail platforms and all Twin-Cooled Milwaukee-Eight configurations.
  • Long-block scope: the installer retains the existing Twin Cam chassis crankcase and supplies the throttle body, intake, exhaust, and ECM tune; the 640 cam typically benefits from a higher-flow intake and a tuned exhaust.
  • Refer to the Fitment tab for the full platform breakdown per variation.
  • Not affiliated with or endorsed by Harley-Davidson.
Compatible Harley-Davidson Models
The T124 long-block family covers select 1999-2017 Harley-Davidson Twin Cam Dyna and Touring chassis across three platform groups and two cam grinds.
YearMakePlatformVariation
Twin Cam 88 Big Twin (excludes 2006 Dyna)
1999-2005Harley-DavidsonDyna (FXD, FXDX, FXDL, FXDP, FXDWG)1999-2006 585 or 640 Cams
1999-2006Harley-DavidsonTouring (FLHT, FLHTC, FLHTCU, FLHX, FLHRC, FLTR, FLHR)1999-2006 585 or 640 Cams
Twin Cam 96/103 Touring (oil-cooled)
2007-2016Harley-DavidsonTouring (FLHT, FLHTC, FLHTCU, FLHTK, FLHX, FLHXS, FLHR, FLHRC, FLHRXS, FLTR, FLTRX, FLTRU, FLTRXS)2007-2016 Touring 585 or 640 Cams
Twin Cam 96/103 Dyna
2006-2017Harley-DavidsonDyna (FXD, FXDC, FXDB, FXDL, FXDF, FXDWG, FXDLS)2006-2017 Dyna 640 Cams
Weight N/A
Dimensions N/A
Color/Finish

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Model

1999-2006 585 Cams (Excl. 06 Dyna), 1999-2006 640 Cams (Excl. 06 Dyna), 2006-2017 Dyna 640 Cams, 2007-2016 Touring 585 Cams, 2007-2016 Touring 640 Cams

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  1. Dave H. –

    My FXDLS will love this upgrade!

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Q & A

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I have a 2016 Ultra limited with the stock motor 103 and liquid cooled heads, will this eliminate the need for the radiator and fans. Also it states that it uses the stock intake, throttle body and air cleaner so is this a direct swap aka plug n play ? Roawarrior asked on December 3, 2024

Not compatible with Twin-Cooled models

 Twisted Choppers answered on December 5, 2024 store manager
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What do I need or is recommended with this? I have a 2010 Road Glide with a D&D Fat Cat 2-1 and an open air cleaner. Thomas Slayton asked on August 31, 2024

Here is a list of items needed/recommended for 2007-2016 Touring models
Sprocket shaft spacer: https://twistedchoppers.com/shop/sprocket-shaft-spacer-for-ss-cycle-touring-model-t-series-engines/
Transmission drilling fixture: https://twistedchoppers.com/shop/ss-cycle-transmission-drilling-fixture-kit-for-t-series-engines-2007-2016-touring/
Oil line kit: https://twistedchoppers.com/shop/ss-cycle-oil-line-kit-for-t-series-engines-2007-2016-touring/
Clutch spring diaphragm: https://twistedchoppers.com/shop/ss-cycle-heavy-duty-clutch-diaphragm-spring-for-98-16-hd-big-twin-models/
66mm induction kit: https://twistedchoppers.com/shop/66mm-induction-kit-for-ss-cycle-t124-engines/

 Joe Skinner answered on August 31, 2024 store manager
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Does the T-124 with 640 cams come with roller rockers? Mark Souza asked on July 29, 2024

These come with the standard forged rockers, not rollers.

 Joe Skinner answered on July 30, 2024 store manager
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Will this work in 2011 ultra limited? CHRIS JACKSON asked on June 21, 2024

Yes, this will work.

 Joe Skinner answered on June 21, 2024 store manager
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I have a 2001 Electra glide fuel injected. Would this T124 fit and if so, what else would I need to purchase and or upgrade so when I take it to be installed, I will not have any surprises or delays. My bike is all stock except Rinehart slip-on exhaust. Thanks in advance! David Nichols asked on June 3, 2024

The following items are recommended by S&S.
Oil line kit: https://twistedchoppers.com/shop/ss-oil-line-kit-for-2007-2016-touring-model-t-series-engines/
Drilling fixture: https://twistedchoppers.com/shop/ss-transmission-drilling-fixture-kit-for-2007-2016-touring-model-t-series-engines/
Sprocket shaft spacer: https://twistedchoppers.com/shop/sprocket-shaft-spacer-for-ss-touring-model-t-series-engines/
We also recommend a high flow air cleaner and a tuner such as a ThunderMax or Dynojet with auto tune capability.

 Joe Skinner answered on June 8, 2024 store manager
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