Zipper’s Sport Touring Kit for 2017 and later Milwaukee-Eight® Models
$0.00
The Sport-Touring Kit is a great choice between our popular Sleeper and Muscle kits!
FOR 2017-2023 1st GENERATION M8
Developed for the experienced rider that wants touring reliability and the widest power curve in its class! The Sport-Touring kit matches our Stage II M8 headwork blueprinting with our Red Shift 548 camshaft and 4.25” cylinder kit that results in big power across the entire RPM range. Twist the throttle at nearly any RPM and you’re rewarded with immediate, seemingly effortless forward motion! The key to this great power is the carefully engineered combination of airflow, camshaft timing, compression, displacement and Zipper’s legendary commitment to testing and machining detail. All of these components are produced in-house at Zipper’s so you can be assured of the highest quality and reliable results!
Not legal for sale or use in California on any pollution controlled motor vehicle.
Not legal for sale or use on any EPA pollution controlled motor vehicle.
Zipper’s is here to help, if you have a question(s) please scroll down and fill out the form and hit send. We will review your question(s) and we will be in contact.
John Helvey –
Just wanted to give the guys at Zippers a shout out on their latest 124” kit. My shop Pure Hell Customs has been using Zippers products and services for over 20 years. This is a very impressive setup from the parts to the machine work! The power is amazing making 149tq and 138.8hp on our Dyno. Thank you Zippers!
Ray –
This kit will turn your touring machine into a touring beast. Power throughout the entire RPM range, even in the low range. Cruises great and surges on demand. Power comes in smooth and builds on itself. I can’t say enough good things about this kit. Try one, you won’t regret it!
Joe Ritchey –
AMAZING results with the #517-986 Sport-Tour 128 Kit on my 2021 Roadglide 117. . . . I considered the 128 Muscle kit but chose the Sport Touring with 6 less HP but 4 more ft.lbs. torque. This engine is as tame as a factory stock engine when riding gently, but an absolute beast when I open it up. The torque comes on strong at low RPM and never lets up, and the fuel economy is over 40 MPG when I ride it sensibly. I’ve owned dozens of custom engine builds in 50+ years and never had such a perfect balance between rideability and performance. Anyone can build an engine that shows big numbers on a dyno sheet but is worthless in the RPM ranges we use every day. There’s no question these Zippers kits are the best in the industry.
J Silas –
Just got their 124 Sport touring kit. Talking to the staff at Zippers about 9 months ago figuring out what I wanted to do and the purpose of the bike and they recommend their Sport Touring kit for all around great riding bike with lots of usable torque. A few months back, I was taking the bike to get tuned on my 114 SGS and found out I’d been riding with a blown head gasket for 2 yrs! Rs468 cam and Tmax was in it at the time, base map and auto tune. Ran great!
Well once that was discovered, I called up Zippers and ordered the kit since it had to be repaired anyways. Let me tell you, these guys know their sh**! On 1st start up you knew this is different. The torque on a base tune felt as though it jumped 30% of not more. Broke it in on a Friday, tuned on this past Monday. Base tune 128/143 SAE, 64mm TB, S.E. ported heads, 548 cam, 7.1 inj, and all the other important pieces that are needed. WHEN he was done 134.67HP/153.TQ! He even said there was more in it but backed off for longevity. The torque curve is insane from 2K and on it’s never below 128 and flat as table from 2500 rpm to 5200 rpm before it dips down to 127. It’s just everywhere! Thank you guys for an awesome product and it did exactly what you said it would do and even more.