557 Easy Start camshaft kit

Facilitates starting by initially reducing compression; once started and with increased RPM, the decompression cam retracts due to centrifugal force, and the engine runs normally without loss of performance.
Designed for Tri-Glides and other heavy motorcycles
Screw-on design
Includes camshafts, cover gasket, bearings, retaining ring, O-ring, threadlocker and instructions
Manufactured in the USA
The installer must check the coil lock, valve clearance and clearance between valve and piston.
Not suitable for models with OEM decompressors.



Specifications


Brand
S&S CYCLE


Supplier reference
330-0053


Application
Exhaust, Intake


Intake cam centre
100°


Exhaust cam centre
103°


Intake closure
27°


Exhaust Clamp
12°


Intake duration
212°


Exhaust duration
231°


Intake valve lift
0,557"


Intake valve lift at TDC
0,113"


Exhaust valve lift
0,557"


Exhaust valve lift at TDC
0,146"


Model
Easy Start


Product name
Camshaft Kit


Type
Chain


Units
Kit


Open intake valve
6°


Open Exhaust Valve
39°


Version
557 Series