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S&S 551 Easy Start Cam Kit For Harley Twin Cam 2006-2017

Item: P273470

If you've put together a hot bike - or if reliability is paramount - an S&S Easy Start Cam Kit should be on your list. Don't bother fooling with compr… Read More

$428.00 - $857.95

This product is vehicle specific. Please to ensure fitment.

Learn More

Product Details

S&S Cycle 551 EZ Easy Start Camshaft Kit For Harley Twin Cam

If you've put together a hot bike - or if reliability is paramount - an S&S Easy Start Cam Kit should be on your list. Don't bother fooling with compression releases or massive-output batteries and super-high-buck starters. S&S designed the Easy Start cams with performance in mind, but then revamped the design to give you great power on a cam that starts easier than a dirtbike. At the center of the cam lives a centrifugally retracted, spring loaded compression release lobe milled into the heel of each exhaust lobe. At cranking speeds, the lobe bumps the exhaust valve open slightly during the compression stroke, making the engine much easier to turn over. Once the engine fires and reaches 800 RPM, the lobe swings out of the tappet roller path, allowing the engine to run normally and with full compression. Ain't technology great?

Features:

  • Start any engine regardless of displacement or compression ratio with a stock starter
  • Save your starter and battery; tested for 10,000 starts without running battery down
  • Allows for easy start by initially reducing cranking compression, but once the engine starts and rpm increases, the compression release lobe is centrifugally retracted and the engine runs normally, with full compression, and without any loss in performance
  • Available in chain drive and gear drive versions
  • All chain drive cams include installation kit
  • All gear drive cams include 4-gear set and installation kit
  • Made in the USA

551 Cam Info:

  • Optimized for 88" to 106" Touring bikes with slip-on mufflers and 9.0 to 10.0:1 compression
  • Can be used with stock pushrods, springs and lifters; high-lift valve springs may be required for some applications
  • Pulls hard from idle to 4000 RPM
  • Similar to Andrews 21H/26H or Screamin' Eagle 203/255
  • Intake open/close 17°/19°
  • Exhaust open/close 41°/17°
  • Intake duration 216°
  • Exhaust duration 238°
  • Lift .550"
Product Style RevZilla Item # MFR. Product # Availability
Product Style Chain Drive Cams RevZilla Item #958984 MFR. Product #106-4947 AvailabilityIn Stock: Ships next business day
Product Style Gear Drive Cams RevZilla Item #958985 MFR. Product #106-5737 AvailabilityIn Stock: Ships next business day

This product is vehicle specific. Please to ensure fitment.

Fitment Notes & Exceptions
  • Installer must check for coil bind, valve-to-valve clearance, and valve-to-piston clearance
  • Due to inherent characteristics of gear-driven cams, you may experience greater valve train noise
  • High-lift valve springs may be required for some applications
  • Not for models with OEM compression releases
Harley Davidson
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Dyna Super Glide FXD/I 2006, 2007, 2008, 2009, 2010
Dyna Switchback FLD 2012, 2013, 2014, 2015, 2016
Dyna Wide Glide FXDWG/I 2006-2017
Electra Glide Classic FLHTC/I 2007-2013
Electra Glide Standard FLHT/I 2007, 2008, 2009
Electra Glide Ultra Classic FLHTCU/I 2007-2016
Electra Glide Ultra Classic Low FLHTCUL 2015, 2016
Electra Glide Ultra Limited FLHTK 2010-2016
Electra Glide Ultra Limited Low FLHTKL 2015, 2016
Freewheeler FLRT 2015, 2016
Road Glide Custom FLTRX 2010, 2011, 2012, 2013
Road Glide FLTR/I 2007, 2008, 2009
Road Glide FLTRX 2015, 2016
Road Glide Special FLTRXS 2015, 2016
Road Glide Ultra FLTRU 2011, 2012, 2013, 2016
Road King Classic FLHRC/I 2007-2013
Road King Custom FLHRS/I 2007-2012
Road King FLHR/I 2007-2016
Softail Blackline FXS 2011, 2012, 2013
Softail Breakout FXSB 2013, 2014, 2015, 2016, 2017
Softail Cross Bones Springer FLSTSB 2008, 2009, 2010, 2011
Softail Custom FXSTC/I 2007, 2008, 2009, 2010
Softail Custom/Nostalgia/Special/Deluxe FLSTN/I 2007-2017
Softail Deuce FXSTD/I 2007
Softail Fat Boy FLSTF/I 2007-2017
Softail Fat Boy Lo FLSTFB 2009-2016
Softail Fat Boy S FLSTFBS 2016, 2017
Softail Heritage Classic FLSTC/I 2007-2017
Softail Night Train FXSTB/I 2007, 2008, 2009
Softail Rocker C FXCWC 2007, 2008, 2009, 2010, 2011
Softail Rocker FXCW 2008, 2009, 2010, 2011
Softail Slim FLS 2012-2017
Softail Slim S FLSS 2016, 2017
Softail Springer Classic FLSTSC/I 2007
Softail Standard FXST/I 2007-2012
Street Glide FLHX/I 2007-2016
Street Glide Special FLHXS 2014, 2015, 2016
Street Glide Trike FLHXXX 2010, 2011
Tri Glide Ultra Classic FLHTCUTG 2009-2016
This item is also available for 25 different models

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Product Description
If you've put together a hot bike - or if reliability is paramount - an S&S Easy Start Cam Kit should be on your list. Don't bother fooling with compr… Read More
Part Numbers
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Fitment
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Reviews & Questions

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Durability
5.0 / 5
Bang For The Buck
4 / 5
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Ease Of Install
5 / 5
Fit & Finish
5 / 5
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5 / 5
installed a pair of s&s power tune true dual head pipes along with the 551 easy start cam. Gave a noticable differnce in torque not just on paper.
January 11, 2017
Purchased
11 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Best cams for 15' StreetGlide Special: HD stage 1 intake and Rhineheart true duals? Thanks
A shopper on Jan 11, 2017
1 Customer Reviews
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