S&S Cycle 540C Camshaft for Big Bore Milwaukee-Eight Engines - Harley Touring & Softail
About S&S Cycle
S&S Cycle has built American V-twin performance parts in Viola, Wisconsin since 1958 — flywheels, carburetors, cams, cylinder heads and complete crate engines. When a Harley owner talks about a 124, a 128 or a 131 build, they are usually talking about S&S. Few names carry more weight with engine builders in this space.
Unlock serious low-end torque in your big bore Milwaukee-Eight engine with the S&S Cycle 540C Camshaft. This cam is specifically engineered for riders who prioritize grunt and acceleration below 6000 rpm. It's an essential upgrade for 124cc and larger displacement M8 motors.
Why riders pick this
- Optimized for maximum low-end torque
- Designed for 124cc and larger M8 big bore engines
- Includes gaskets, bearings, and mounting hardware
- Enhances acceleration and usable power below 6000 rpm
The S&S Cycle 540C Camshaft is a dedicated performance upgrade for Harley-Davidson Milwaukee-Eight engines that have been upgraded to 124cc or larger displacement. Unlike cams designed for peak horsepower, the 540C focuses on delivering maximum usable torque where you need it most – in the low to mid-range. This makes it perfect for bagger riders who want instant power for passing and getting off the line.
Optimized for Torque
- 540 cam profile specifically optimized for torque delivery below 6000 rpm
- Designed to excel in 124cc and larger displacement Milwaukee-Eight engines
- Includes all necessary gaskets, bearings, and mounting hardware for installation
- Transforms big bore M8s into low-end torque monsters
Unleash Big Bore Potential
To fully realize the potential of your big bore Milwaukee-Eight, the 540C camshaft is an ideal choice. It works best when paired with the S&S 4.25" Big Bore Kit, creating a formidable combination for riders seeking substantial displacement gains and impressive acceleration. Keep in mind that this cam requires adjustable pushrods and heavy-duty valve springs, which are sold separately, to ensure proper valve train geometry and durability with the aggressive 540C profile.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 330-0713
- Category: Engine Components / Camshafts
- Weight: 2.7 lb
Common questions
What additional parts are required for installing the S&S Cycle 540C Camshaft?
Adjustable pushrods and heavy-duty valve springs are required for installation. These components are sold separately and are essential for proper function with the 540C cam profile.
Is the 540C camshaft suitable for stock displacement Milwaukee-Eight engines?
The 540C is specifically designed and optimized for Milwaukee-Eight engines with a big bore displacement of 124cc or larger. It is not recommended for stock displacement engines.
Will this cam change the sound of my exhaust?
A performance camshaft like the 540C can influence exhaust note, often resulting in a more aggressive sound due to changes in valve timing and engine dynamics.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | S&S Cycle |
| TYPE | Camshafts |
| SKU | T14-619410 |
| WEIGHT | 2.7 lb |
