S&S 640 Cam Kit For Harley Twin Cam 2006-2017
  • S&S 640 Cam Kit For Harley Twin Cam 2006-2017 - Gear Drive Cams

Please select a to check availability, or to add this item to your Shopping Cart or Wish List.



Select qty:

Please select a to view availability.
Add to Wish List

Video Reviews (2)

S&S 640 Cam Kit For Harley Twin Cam 2006-2017 Videos

This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

S&S Cycle 640 Camshaft Kit For Harley Twin Cam

S&S has been in the business of making Harley-Davidson motorcycles go fast for a very long time, and their innovation in the world of bumpsticks is not exactly a secret. If you're looking for more power from your bike, a cam is a wonderful place to start - especially if you've already done most of the easy 'bolt-on' modifications. Installing an S&S cam is a surefire way to make your mill suit your riding style while getting maximum output.


  • Only available in gear drive version
  • Gear drive cams include 4-gear set and installation kit
  • Made in the USA

640 Cam Info:

  • Designed for S&S T124 engines - This cam makes horsepower!
  • Intended for 95"-110" engines with compression ratios between 10.5:1 and 11.5:1
  • Strongest from 3000 RPM-6000 RPM
  • Comparable to Screamin' Eagle SE-264 and Andrews 59H cams
  • High-lift valve springs required for all applications
  • Intake open/close 25°/60°
  • Exhaust open/close 65°/25°
  • Intake duration 265°
  • Exhaust duration 270°
  • Lift .640"

Fitment Notes & Exceptions

  • Installer must check for coil bind, valve-to-valve clearance, and valve-to-piston clearance
  • Cam bearings and gaskets must be replaced when installing new cams
  • High-lift valve springs are required to run these cams in all models
This Product Fits:
Harley Davidson
Dyna Fat Bob FXDF 20082017
Dyna Low Rider FXDL/I 20062009, 20142017
Dyna Low Rider S FXDLS 2016, 2017
Dyna Street Bob FXDB/I 20062017
Dyna Super Glide Custom FXDC/I 20062014
Dyna Super Glide FXD/I 2006, 2007, 2008, 2009, 2010
Dyna Switchback FLD 2012, 2013, 2014, 2015, 2016
Dyna Wide Glide FXDWG/I 20062017
Electra Glide Classic FLHTC/I 20072013
Electra Glide Standard FLHT/I 2007, 2008, 2009
Electra Glide Ultra Classic FLHTCU/I 20072016
Electra Glide Ultra Classic Low FLHTCUL 2015, 2016
Electra Glide Ultra Limited FLHTK 20102016
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 20072013
Road King Custom FLHRS/I 20072012
Road King FLHR/I 20072016
Softail Blackline FXS 2011, 2012, 2013
Softail Breakout FXSB 2013, 2014, 2015, 2016, 2017
Softail Cross Bones FLSTSB 2008, 2009, 2010, 2011
Softail Custom FXSTC/I 2007, 2008, 2009, 2010
Softail Custom/Nostalgia/Special/Deluxe FLSTN/I 20072017
Softail Deuce FXSTD/I 2007
Softail Fat Boy FLSTF/I 20072017
Softail Fat Boy Lo FLSTFB 20092016
Softail Fat Boy S FLSTFBS 2016, 2017
Softail Heritage Classic FLSTC/I 20072017
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 20122017
Softail Slim S FLSS 2016, 2017
Softail Springer Classic FLSTSC/I 2007
Softail Standard FXST/I 20072012
Street Glide FLHX/I 20072016
Street Glide Special FLHXS 2014, 2015, 2016
Street Glide Trike FLHXXX 2010, 2011
Tri Glide Ultra Classic FLHTCUTG 20092016
Product Style RevZilla Item # Manufacturer Product # Availability
Gear Drive Cams 959694 33-5270 Only 1 Left: Ships within 24 hours


Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Write a Product Review for a chance to win our monthly $100 giveaways.
There are no reviews for this item. Write Review
Use our Product Q&A for a chance to win our monthly $100 giveaways.

Have a functionality, fit, or otherwise product-specific question about the S&S 640 Cam Kit For Harley Twin Cam 2006-2017? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!