S&S CYCLE SKU: T14-663660

S&S Cycle Cam Chest Kits — 2007-2017 Harley-Davidson Dyna 551GE

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S&S Cycle Complete Gear Drive Cam Chest Kit replaces all critical cam chest components—oil pump, cam support plate, cams, and tappets—with premium U.S.-made parts and eliminates cam chain failure risk with a gear drive design. Fits 2007-2017 Harley-Davidson Dyna 551GE models and upgrades 1999-2006 engines to 2007+ specifications.

Features

  • Complete cam chest overhaul in one kit
  • S&S performance gear drive camshafts with higher lift and optimized timing
  • Eliminates cam chain failure with gear drive design
  • Includes upgraded oil pump for 1999-2006 models
  • Better, more consistent oil pressure
  • All U.S.-made S&S components

Specifications

  • Brand: S&S Cycle
  • Manufacturer Part #: 310-0815
  • Weight: 12.75 lb
  • Category: Engine Components / Cam Gears

Fitment

Fits 2007-2017 Harley-Davidson Dyna 551GE. Includes upgraded oil pump to bring 1999-2006 models to 2007+ specifications.

Frequently Asked Questions

Will this kit fit my 1999-2006 Dyna?

This kit is designed for 2007-2017 Dyna 551GE models, but includes an upgraded oil pump to retrofit 1999-2006 engines to 2007+ specs.

Does this eliminate cam chain noise and failure?

Yes — the S&S gear drive design eliminates the cam chain entirely, removing any risk of chain failure or related noise.

What components are included in the kit?

Oil pump, cam support plate, camshafts, tappets, and all associated hardware needed for a complete cam chest installation.

Will this improve horsepower and torque?

Yes — the S&S performance cams feature higher lift and optimized timing for improved engine performance compared to stock.

Is professional installation required?

Cam chest installation is an advanced engine rebuild procedure. Professional shop installation is strongly recommended.

BRANDS&S Cycle
TYPECam Gears
SKUT14-663660
WEIGHT12.75 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.84
51 RATINGS
5★ 45
4★ 5
3★ 0
2★ 1
1★ 0
✓ VERIFIED
Nov 9, 2021

10/10 would recommend

Nearing 40k miles on my 2018 Road Glide I was concerned with some of the issues the stock M8 was having. Conveniently this kit fixes everything that I was worried about and has the added bonus of 30HP and 10TQ. The 475 cam really woke up my 107" and you can feel the increase in acceleration power through all the gears but especially over 70MPH.<br />- Wiz IOMC <8> IOFFIO

— Gregory C
✓ VERIFIED
Nov 1, 2022

Overkill, just like I wanted

Great kit with just about everything you need. Plenty of online tutorials to make it quite simple. Took me about 6hrs from start to finish, and I did it all in my front yard

— Atreyu S
✓ VERIFIED
Nov 8, 2021

Great product, A+. Great sound and quality

The kit is amazing, great quality and all parts needed for the job. Easily the best upgrade I?ve done to my bike. It?s exactly what the M8 needs to make it sound good. Would absolutely recommend.

— Cory G
✓ VERIFIED
Oct 29, 2021

The 475 cam really woke up my M8! More power and better sound the hardest thing to do ended up being removing and installing the exhaust. I highly recommend this.

— Glenn W
✓ VERIFIED
Jul 27, 2023

A superb kit. All inclusive except… (and not a real show stopper), read on —

Mostly bought this kit for the oil pump to avoid any problems with potential sumping issues but the old Harley battle cry “as long as we’re in there…” ruled in my case. Saw no downside to the 475 cam and wasn’t disappointed. New cam, cam plate, new lifters and adj pushrods, of course, and no warm fuzzies with the plastic lifter sleeves (not incl in this kit), so those went as well. No dyno to share as I went with a canned tune from FuelMoto on a DynoJet PowerVision and am autotuning. Butt dyno says good gains in hp and tq. Glad I did it. My only mild negative is that it wasn’t blasting me in the face that I needed a HD brand o-ring/gasket for the oil pump that they, for proprietary reasons, could not include. It may have been mentioned somewhere but I don’t recall seeing it. Not a big deal and certainly no reason to go elsewhere for a kit. This most excellent kit, except for said gasket, was otherwise all inclusive and I can’t recommend it too highly. Good job S&S. 2019 FLHXSE 117, oil cooled

— William W
✓ VERIFIED
Mar 14, 2024

Was worth it to me

Traded mpg for the power and chop from this cam. M8 107 dyno'd at 110hp 122tq.<br />2017 stock header, cat delete, x-over capped to 2-1, neighbor hater, k&n 63-1138

— Travis G