S&S Cycle

S&S Cycle 551 Cam Kit For Harley Twin Cam 1999-2006

Item: P273932
Customer rating is 5 out of 5 stars.
5 Read 5 Reviews 7 Q&As Write a Review

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 no… Read More

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Product Details

S&S Cycle 551 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.

Features:

  • 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:

  • Originally designed as a bolt-in, high-torque cam for Touring bikes with compression ratios between 9:1 and 9:9
  • More power across the RPM range, with improved low and midrange torque
  • Strongest from 1000 RPM-4000 RPM
  • Can be used with stock valve springs, pushrods, and lifters; '99-'04 models require high-lift valve springs
  • Intake open/close 17°/19°
  • Exhaust open/close 41°/17°
  • Intake duration 216°
  • Exhaust duration 238°
  • Lift .550"
Product Style RevZilla Item # Store Sku MFR. Product # Availability
Product Style Chain Drive Cams RevZilla Item #959511 Store Sku MFR. Product #330-0002 AvailabilityOut of Stock
Product Style Gear Drive Cams RevZilla Item #959512 Store Sku MFR. Product #330-0100 AvailabilityIn Stock: Ships next business day
This product is vehicle specific.
Select a vehicle to ensure fitment.
Fitment Notes & Exceptions
  • This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only.
    • 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
    • For installation of chain-drive kit on 1999 Twin Cam motors, you must purchase a splined outer drive sprocket
    • High-lift valve springs are required to run these cams on 1999-2004 models and may be required for other applications
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    S&S Cycle 551 Cam Kit For Harley Twin Cam 1999-2006 Installation

    Product Description
    Part Numbers
    Fitment
    Installation
    5 Customer Reviews for All Models
    Customer rating is 5 out of 5 stars. 5 total customer reviews 5/5
    7 Questions & 8 Answers for All Models
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