Big bore engines are all about the flow, more air in and more air out, anything that slows that down, robs horsepower. The factory M8 intake manifold does a decent job in stock form, but starts getting in the way when trapped between 124 inch and larger cylinders. The stock polymer unit is also less tolerant of the additional heat that a big bore engine can make at full noise. The solution is the S&S high flow cast aluminum manifold - a must have for top level performance in the M8 platform!
High flow design adds 3 to 5 horsepower
Must have for big bore engines
CNC machined from T6 heat-treated cast aluminum
Replaces stock plastic manifold
Includes new rubber seal
Easy to install with fittings for OEM components
Made in the USA
Product Note:
Specification
Details
Bore
55 mm
Country of Origin
USA
Engine Type
Milwaukee Eight
Material
Aluminum
Warranty
1 Year Manufacturer Warranty
Vehicle Fitment
Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.
A direct replacement. Fits great, works great. Get rid of the plastic.
Easy
By Thomas M. on
Verified Purchaser
Easy installation.
S&S 55mm Manifold
By Derrick J. on
Verified Purchaser
Love it.
Wow!
By Randy M. on
Verified Purchaser
If you haven't replaced the plastic intake with this aluminum one then your missing out on the best bang for your buck! Well made, fit and finish is excellent and easy to install. A noticeable difference in power and the idle is normal.
Worthwhile upgrade to stock manifold
By Nick on
Verified Purchaser
This is a must have replacement for the stock plastic manifold, which is known to deform and/or crack with heat stress and age.
10/10
By Blade S. on
Verified Purchaser
Lowest price I could find. Very pleased.
S&S 55mm Manifold
By Walter G. on
Verified Purchaser
I got the part I needed for my bike, at a great price. I will recommend them!
Great company
By Carlos G. on
Verified Purchaser
This was a great deal.
Awesome quality
By Carlos G. on
Verified Purchaser
Great product.
Great price, and awesome manifold upgrade.
By Arthur F. on
Verified Purchaser
This manifold was hard to find in last half of 2021. All retail sites were charging close to retail price as well....on backorder. I waited for months with Dennis Kirk and my order was cancelled. In early 2022, I found Parts Giant had this on their site, I called to verify stock availability, purchased one morning and received it the next day. I was very satisfied with the product itself. It was not a difficult install and stands out with its aluminum finish compared to the stock black plastic unit.
Performance? Who knows, but I do know its a better quality unit than the 2 piece plastic manifold it replaced.
How many stars would you give this product? Write a review.
Would this manifold work good on my 2019 m8 motor with cams and 2 into 1 exhaust
By Walt
M8 motor and cam and 2into one exhaust
Yes. It's actually really useful to go along with any performance modifications where extra air is useful. Properly tuned, you can expect a good bump in power output and better throttle response at all power settings.
Verified Purchaser
