Why Upgrade to the S&S 55mm Intake Manifold for Your M8 Harley-Davidson?
If you’re looking to get the most performance out of your Milwaukee-Eight (M8) Harley-Davidson, upgrading the intake manifold is a smart move. In this article, we’ll break down why the S&S 55mm intake manifold is a significant improvement over the stock plastic manifold, how it enhances performance, and why it’s a must-have for riders seeking better throttle response and durability.
Stock Plastic Manifold vs. S&S 55mm Intake Manifold
Harley-Davidson M8 models come equipped with a plastic intake manifold from the factory. While functional, this stock component has several downsides:
-
Durability Issues – The plastic construction can be prone to warping or cracking over time, especially under high heat and stress.
-
Restrictive Design – The factory manifold isn’t optimized for maximum airflow, which can limit the performance gains from other engine upgrades like cams and exhaust systems.
-
Seal and Fitment Problems – Over time, plastic manifolds may develop air leaks, leading to inconsistent performance and tuning issues.
The S&S 55mm intake manifold addresses all of these issues with a superior design that’s built for performance. Here’s why it’s the better choice:
Benefits of the S&S 55mm Intake Manifold
-
Stronger, More Durable Construction – Made from high-quality aluminum, the S&S manifold eliminates concerns about cracking or heat-related warping.
-
Larger 55mm Bore for Increased Airflow – The improved internal design allows for better air intake, leading to noticeable horsepower and torque gains, especially when paired with other performance mods.
-
Better Throttle Response – A smoother, more efficient air path means your bike responds more quickly and efficiently to throttle input.
-
Improved Tuning and Consistency – Unlike plastic manifolds that may leak over time, the precision machining of the S&S intake ensures a better seal and consistent performance.
-
Compatible with Aftermarket Throttle Bodies – The larger bore works seamlessly with upgraded throttle bodies, making it a great choice for serious performance builds.
Who Should Upgrade?
The S&S 55mm intake manifold is a great upgrade for any rider looking to maximize their M8’s potential. Whether you’ve already upgraded your exhaust and cam or you’re planning future mods, replacing the restrictive stock manifold will help unlock more power and reliability.
If you’re running a high-performance build or even just want a more responsive ride, this upgrade is a no-brainer.
Where to Buy
For riders serious about getting the most out of their Harley-Davidson M8, upgrading to the S&S 55mm intake manifold is a solid investment. Not only does it enhance performance, but it also ensures long-term reliability, making it a must-have for performance-minded riders.
Got questions about installation or tuning? Reach out to us, or check out our YouTube video for a full breakdown!
Leave a comment