MME is a World Leader in performance race engine building. Specializing in new technology performance services, such as nikasil plated cylinder coatings, computerized two stroke porting,  four stroke porting & high torque camshafts, custom cylinder sleeves,  and custom pistons. Other services we offer include Cylinder repair and re plating, crankshaft stroking & rebuilding, custom pistons, custom cylinder sleeves and complete performance engine building for all ATV, Jet ski / PWC,  motorcycle, and Snowmobile Engines.

We have over 30 years of experience with current world record race machines. (See our winning machines)  Our two main goals are #1 reliability #2 acceleration (torque).  Most races are won in the first 30 - 50 feet or from rocketing out of corners.

click on green links for more info

 Computerized Two Stroke Porting

Four Stroke Porting & Camshafts

 Motorcycle Atv Big Bore Cylinder Kits

  Custom Crankshaft Stroking & Rebuilding

Cylinder Repair: Boring, Honing, Sleeving, Nikasil or Electrofusion Plating 

Honda Cr 500 & Cr 250 Wide Ratio Transmission  Kits

NEW    Duramax LB7/LLY/LBZ/LMM Custom Diesel Programming

Projects & Latest Accomplishments

08 Kawasaki Kx500 Performance Race Engines   Daniel Fowler runs 502's in 400ft

08 Yamaha YFZ450 Performance Race Engines Just signed on Melvin Jeffords production A

08 Yamaha YFZ450 Performance Race Engines Winner Patrick Clark Supermoto 08

 07  Yamaha Rhino Performance Race Engines Winner Jim Carter Best of Desert 07

07 Honda  Cr250  Performance Race Engines  Dirt Drags runs 580's in 400ft

04-06 Kawasaki 800sx-r Performance Race Engines Winner Jerry Schmit region 8

04-05 Honda CRF450 Performance Engines Winner Nick Holt Flat track nationals

Honda CR85 33 Horsepower Performance Race Engines Track record St. Louis

06 Yamaha RZ500 Performance Race Engines  Madman Engineering's 110hp Rz500

Our Winning Machines

Dyno Charts

About us

Note: We are very busy and it's hard to answer questions via email.  Please call or email your phone # and the best time for us to call you.

MADMAN ENGINEERING

 RR 2 Box 201A Lake Glendale Rd.

 Golconda, Illinois   62938

Phone 618-949-3898

info@madmanengineering.com

DIRT, ASPHALT, SNOW
& WATER

 are EVIL and

!!! Must be Punished !!!