(636) 949-2275 / (636)-734-5703 (cell)

(636) 949-2275 / (636)-734-5703 (cell)
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Rebuild. Repair. Restore. Most makes & models!
Whipple, Eaton, Mini Cooper, Mercury Verado, Mustang, Hellcat, GT500, Cobra, Toyota, Jaguar, and more!

Stiegemeier Porting Services is a supercharger repair shop that traces its roots back to 1941, when Bob's Grandfather started an automotive repair business here on the property. Bob's father was also a mechanic at a local dealership.
Today, "Dyno Bob" carries on the legacy as the third generation of car guys in the Stiegemeier Family.

At Stiegemeier Porting Services, we rebuild, restore and refresh superchargers. From disassembly and cleaning, to replacing worn bearings and seals, to porting for more power, when it comes to superchargers, we do it all.
Our mission is to provide high quality service, at a fair price, with a quick turnaround time.

Our team consists of experienced car enthusiasts who are highly knowledgeable about the services we provide. If you have supercharger questions, we have answers.
If your supercharger is making some noise, or it's not making the boost you're used to, we can help!




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If you are local to us and would like to drop off your Eaton supercharger for porting, please give us a call to arrange a time for your ported Eaton supercharger or Stiegemeier supercharger.
2140 S. Old Hwy 94, St. Charles, Missouri 63303, United States
Open today | 08:00 am – 04:00 pm |
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