551G gear-driven camshaft kit.

Designed for 96 to 106 CID engines and 9:1 to 9:9 compression; bolt-in camshaft kit for original or slightly modified touring motorcycles.
Reverses the rotation direction of the rear camshaft, providing greater operational clearance between cams and allowing greater lift.
More power across the entire rpm range, with increased torque at low and mid revs, maximum between 1,000 and 4,000 rpm
Improves valve timing accuracy by eliminating play in the timing chain and slack in the original chain.
It is necessary to remove material from the internal surface of the original cover plate for installation.
Hydraulic press and other professional tools required for installation
When fitting new camshafts, it is necessary to replace the camshaft bearings and seals.
S&S recommend using the adjustable rod and cover kit
Not recommended for compression ratios of 10:1 or higher.
The kit includes internal and external gears, internal and external bearings, seals and instructions
Made in the USA
The installer must check the spring lock, valve clearance, and valve-to-piston clearance.
Due to the inherent characteristics of the gears, increased noise may be perceived in the valve train.
Not suitable for '06 Dyna.



Specifications


Brand
S&S CYCLE


Supplier reference
330-0100


Application
Exhaust, Intake


Intake cam centre
91°


Exhaust cam centre
102°


Intake closure
19°


Exhaust Clamp
17°


Intake duration
216°


Exhaust duration
238°


Intake valve lift
0,550"


Intake valve lift at TDC
0,178"


Exhaust valve lift
0,550"


Exhaust valve lift at TDC
0,170"


Product name
Camshaft Kit


Type
Equipment


Units
Kit


Open intake valve
17°


Open Exhaust Valve
41°


Version
Series 551