Camshafts
S&S CYCLE Camshaft Kit - Easy Start - HP103 Chain Drive - Twin Cam '99-'06 (except '06 Dyna)
Brand: S&S CYCLE
SKU: P1291870512973
$540.95
$467.45
Taxes and shipping calculated at checkout.
HP103 Easy Start Camshaft Kit
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Product Details
Highlights
- Allows for easy start by initially reducing crank 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.
- Designed as bolt-in cams for 103" engine with stock 9.7:1 compression ratio up to 10.5:1 compression ratio.
- Power in the high rpm range, 3000 rpm - 6000 rpm.
- Includes camshafts, gearcover gasket, bearings, retaining ring, o-ring, threat lock and instructions.
- Made in the USA.
- Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance.
- Works well with stock, unported heads, but is great for S&S CNC ported heads.
- Not for models with OEM compression releases.
S&S HP103CE Easy Start chain drive camshaft kit for 1999-2006 HD Big Twins except 2006 HD Dyna are recommended for modifed engines with larger displacement and higher compression. More torque and horsepower than bolt in cams can deliver. Stock valve springs in 2005-2006 engines may be used with MR103 and HP103 cams. An S&S oil pump and cam support plate, along with a stock 2007 and later style hydraulic cam chain tensioner upgrade is highly recommended for chain drive cams.
Specifications
| Application | Exhaust / Intake |
|---|---|
| Exhaust Close Imperial | 26 |
| Exhaust Duration Imperial | 251 |
| Exhaust Lift at TDC Imperial | 0.206" |
| Exhaust Lift Imperial | 0.575" |
| Exhaust Lobe Centerline Imperial | 99.5 |
| Exhaust Open Imperial | 45 |
| Grind | HP103 |
| Intake Close Imperial | 49 |
| Intake Duration Imperial | 249 |
| Intake Lift at TDC Imperial | 0.199" |
| Intake Lift Imperial | 0.575" |
| Intake Lobe Centerline Imperial | 104.500 |
| Intake Open Imperial | 20 |
| Model | Easy Start |
| Riding Style | Street |
| Type | Chain |
| Units | Kit |
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