S&s Cycle Mr103 Camshaft Kit For 103" Engines
S&s Cycle Mr103 Camshaft Kit For 103" Engines
Available in stock (10)
About this product
About this product
Upgrade your 103" engine with the S&S Cycle MR103 Easy Start Camshaft Kit. This kit delivers enhanced power and smooth operation for your motorcycle, ensuring optimal performance across the RPM range. Experience the difference that precision engineering and high-quality components make.
Description
The S&S Cycle MR103 Easy Start Camshaft Kit is specifically designed for 103" engines with a compression ratio between 9.7:1 and 10.5:1. This bolt-in cam design allows for an easier start by initially reducing crank compression. Once the engine starts and RPM increases, the compression release lobe retracts centrifugally, restoring full compression and performance without any loss. Expect increased power, particularly in the 2500 to 5500 RPM range. Compatible with stock, un-ported heads and optimized for use with S&S CNC ported heads, this kit provides versatility and improved engine dynamics. Professional installation is recommended to ensure proper coil bind, valve-to-valve clearance, and valve-to-piston clearance.
Features & highlights
- Easy Start Design: Reduces initial crank compression for effortless starting.
- Enhanced Power: Delivers more power across the RPM range, especially between 2500-5500 RPM.
- Optimized Compression: Centrifugal compression release ensures full compression during normal operation.
- Versatile Compatibility: Works with stock and S&S CNC ported heads.
- Complete Kit: Includes camshafts, gear cover gasket, bearings, retaining ring, o-ring, thread lock, and instructions.
- Made in the USA: Ensures premium quality and reliability.
Technical specifications
- Brand: S&S Cycle
- Product Name: Camshaft Kit
- Grind: MR103
- Type: Chain
- Intake Open: 13°
- Intake Close: 33°
- Intake Duration: 226°
- Intake Lift: 0.585"
- Intake Lift at TDC: 0.172"
- Intake Lobe Centerline: 100°
- Exhaust Open: 50°
- Exhaust Close: 22°
- Exhaust Duration: 252°
- Exhaust Lift: 0.585"
- Exhaust Lift at TDC: 0.177"
- Exhaust Lobe Centerline: 104°
Important to know
- Not for models with OEM compression releases.
- Installer must check coil bind, valve-to-valve clearance, and valve-to-piston clearance.
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
S&S CYCLE
330-0299
Camshaft Kit
13°
0,172"
100°
0,585"
226°
33°
MR103
50°
0,177"
104°
0,585"
252°
22°
Exhaust, Intake
Chain
Kit
Reviews


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Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.
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