Engine Rebuilding

The experience here at MRT is not just with suspension and chassis, MRT builds the most competitive engines, in fact you can frequently see MRT riders mixing it up with the factories in in National SX and MX. MRT can build a "whatever it takes package" or we can build your motor to a price point that you are comfortable with.
Choosing MRT to rebuild your motor you will know it's done right and at a fair price. With MRT on the job you will be tapping into all our experience this means we can advise you what you need to replace what you don't, We can give you some details of what sort of life expectancy you should see and based off what we see better ways to maintain it for the longest life possible.

Japanese 4 Stroke Rebuild

Disassembly, Cleaning, Inspecting, Parts List creation and Rebuild

European 4 Stroke Rebuild

Disassembly, Cleaning, Inspecting, Parts List creation and Rebuild

2 Stroke Rebuild

Disassembly, Cleaning, Inspecting, Parts List creation and Rebuild

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Turn Around Time

Generally you can expect 4-5 business days on a straight forward motor rebuild. Custom work requires longer. Lead times tend to grow at the start of the season and before national events so plan ahead whenever possible.

How to Box it Up

Drain the coolant and ALL THE OIL (both sides on some four strokes), and make sure the motor is thoroughly clean and dry. If you have partially disassembled the motor we recommend that you build it back up and include any damaged parts. This way we can make sure that all the parts are there for the rebuild. Loose parts won’t damage gasket surfaces. Including all parts allows us to provide you with a complete diagnosis. When you are ready to package your motor it should look something like this:

We highly recommend that you wrap the motor in a large plastic bag and seal it with tape. This reduces the possibility of condensation creating corrosion and any remaining oil or coolant doesn’t leak out and stop your shipment en-route. Pack the motor in custom motor box when possible. Tip – an economical alternative is a square, wheeled cooler available in Wal-Mart for around $50.

What to Ship

Ship only your motor and parts that remained on the motor when you pulled it out like the intake boot and exhaust flange. Items like the throttle body/carb and ignition should not be included unless you want these items serviced or modified.Following Up after You Ship

E-mail us the tracking # for your shipment to support@mergracing.com and we will schedule your project in so there is no delay.