Junior Sprint, Semi-Pro Sprint and Pro Sprint
 380, 440, 500 & 600 Racing Engines

Air Cooled 2 Cylinder with Y pipe

Sprint racing in the Mid West is absolutely dominated by our customers. Have a Wienandt prepared engine, or get beat by one. Six straight World Championships says it all.  We now have products for 380 Stock Sprint, 440 Stock Sprint, 440 Mod Sprint , 500 Mod Sprint and 600 Mod Sprint.
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Jeff Ludwig, the has five undefeated seasons on WIENANDT Sprint engines.   Jeff has been winning 440, 500 and 600 with his 440 cc WIENANDT engine and pipe.
Junior Sprint 380 and 440 class
Race Prep of 380 Rotax. With tuned race pipe…………$1000
Race Prep 440 Polaris or Arctic Cat with race pipe..…..$1000
Plus any new parts required to maintain quality engine.
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Junior Sprint drivers all have WIENANDT engines
Race Prep  Sprint 440 Mod Polaris or Arctic Cat
Engine and pipe………………………………………..…$1700
WPT can prepare your engine with the most advanced porting, high tech head designs, and ignition curves that are matched for the WPT pipe with silencer for today’s racing. 


Race Prep Sprint 600  Polaris 440-550
Big Bore engine & Pipe………………………………...$2450
This is an over bore, engine. Displacement close to class limit
Good porting and head work along with a proper pipe is even more important in this new open type class.

Sprint stock Based Classes
As the class rules evolve many classes have gone to stock based engine with an open pipe rule.  Again WPT can be your source for quality engine prep work along with a pipe and dyno tuning to tune it right for you.  If you don’t try us, you may get beat by one of our engine pacxkages.


Dynamometer Service
(per day charge)……………………………………….…$500
Racers may come to our facility or ship engines to the WPT for Dyno for tuning and evaluation of many engines in a days time or fine tune a given engine. See which of your engines is better and tune the best performance out of each one.  Find the correct Rpm range, Jetting, Timing and even Spark Plugs, are things you can now verify with solid data, no longer just opinion.  

WPT uses the most advanced computer engine simulation software in the world. The same software that some of the OEM’s use.  Optimum Power Technology is beyond the capabilities of performance shops and uses the true science of an engine in every detail. Use it or get beat by it.


You need to provide good parts to work from and WPT can prepare Quality, Legal Race Engine using techniques acquired from 40 years of preparing race engines.  Each engine is prepared to the best of the ability of the parts provided. New parts will be recommended when required. It is our goal to make every engine, a winning engine.