Race to Victory with Leslie Racing!

Your Source for High-Performance 4 Cycle Engines

Dyno tested, track proven, championship winning power! Our Briggs LO206 engine program gives you, the racer, the confidence needed to WIN! With over 30 years’ experience ranging from small single cylinder engines to street/drag cars and industrial powerplants, we have the experience to build your motor right! No sticker slapping here as we go through the entire engine and dial it in before our name goes on it. With our engines, we give you the confidence that you have the power needed to run up front and WIN! Our engines have gained numerous podium finishes since our inception across multiple tracks and series ranging from sprint karts to asphalt oval. No tricks, no gimmicks, no worries when you hit the tech shed!

If you are looking for something outside of the normal LO206 rules package, give us a call and let us know what you are looking for.

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Engine Mounts

Rev Performance's engine mounts are precision-engineered components designed to provide optimal support... 

Happiness is a straight shaft.

Don't let a bent axle waste your race funds, Here at Leslie Racing we can straighten your bent axle to get you back out on the track. 

Each axle will be evaluated to determine if repair is available before serves. Axles with any wrinkles or other excessive damage can not be straightened. Please contact us for a quote

Let us straighten you out

Briggs 206 Engine Refresh Starting @ $275.00

With this service, we take your engine and run it through a comprehensive battery of tests and inspections. This will ensure that every part that can be checked is inspected and tested. This service starts with a flat rate fee, and any components requiring replacement will be billed out at retail cost to you. Engines are worked in the order they are received unless special considerations need to be made. 
- Initial leakdown Inspection
- Full teardown 
- Internal component inspection
- Full cleaning including ultrasonic
- Full cylinder head service
- Inspect, test, and adjust carburetor
- Expert reassembly and final leakdown inspection
- Oil fill with your choice of engine oil (or ask us what we recommend!!!)
- Quick engine run-in on stand to get to temperature and check for any potential issues. 

Standard parts list to expect with this service:
+ Head Gasket
+ Cylinder Head Plate Gasket
+ Valve Springs
+ Valve Cover Gasket
+ Carburetor Gaskets
Additional Parts that may be required (not all inclusive):
+ Valves
+ Rocker Arms and hardware
+ Pushrods
+ Cylinder head plate
+ Spark Plug
+ Cylinder Head Assy
+ Carburetor Jet(s)

What we need (and don't!)
Remove engine from your mount. We use in-house stands for your engine as we work on it, and do not require your engine mount. 
Oil AS RAN during your last session. If you are diligent and change your motor oil regularly after a track session, please save some oil from the last session for evaluation. 

All fuel drained from system. Please drain the fuel bowl and fuel lines before supplying us with your engine. 

If you wish for us to inspect / service your clutch, please leave it on the engine AS RAN. **See Clutch service under other services offered. 

Reach out to get on the schedule

Briggs 206 Dyno Tuning Starting @ $100.00

This is an add-on service, and one that we highly recommend! At LR, none of our team engines get mounted to any kart until they have been fully dyno tested and tuned. This ensures that you are getting the most out of your combination.

Clutch Service Starting @ $25.00

If you would like us to service your clutch for you, we can absolutely do that! If included with your engine, we will remove it and inspect the installation and the components.

All parts required will be billed out at retail cost. We will inspect and measure the components for excessive wear or damage, and will set the clutch to your desired specifications. We can also suggest settings based on your data (if available!)

More Coming Soon!

Give us a call for all your racing needs

815-685-4650