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Racing Engines



At FastMann Racing, we have the most advanced seat and guide equipment available. As well as a state of the art SuperFlow Dyno. This allows us to make sure that our Racing Engines and ECU mapping is done to surpass the OEM performance output and maintain or excel on factory reliability.

our racing engines

In addition to this, we build our engines with the components and parts that help to ensure a smooth, powerful, and reliable performance. Our goal is to exceed your expectations on the track with our Racing Engines, and ECU tuning. We also provide extensive customer service and technical support for all of our engine and ecu services. If you have any questions or concerns about your FastMann Racing engine, just give us a call and we will be happy to help.

customer service

We provide extensive

We also provide extensive customer service and technical support for all of our engine and ecu services. If you have any questions or concerns about your FastMann Racing engine, just give us a call and we will be happy to help.

Our team of highly qualified and experienced technicians specialize in the custom fabrication of components and assembling them with precision. We go above and beyond to make sure that every part is built to spec, ensuring that our bikes have unrivaled performance potential. Our bikes are not only aesthetically pleasing but also equipped with specialized parts for maximum power output, torque, and overall reliability. With our custom-built engines you can be sure that your bike is getting the best performance out of its parts. We strive to give every customer the highest level of satisfaction when it comes to their new build or upgrade.

Machine Work Done On-Site

Once the engine is built, we can then start putting together the rest of the bike. We take great care to make sure that all other components are also properly installed and configured for optimal performance. This includes the exhaust system, air intake, fuel delivery system, ignition system, cooling system and more.

Once the head work is complete, the cylinder heads must pass a vacuum test to ensure proper sealing of the valves.  The extensive head work we’ve done means that the original jetting or EFI tables are no longer applicable, so upon completion of tuning, for the carbureted bikes we adjust the accelerator pump circuit to ensure maximum throttle response and optimal performance. We also use Ampco 45 seats and guides, which are better suited for titanium valves than the stock materials. The Ampco 45 is also much more efficient at transferring heat, allowing us to achieve a higher level of reliability. In short, this process guarantees that you will get optimal performance out of your vehicle.

When the valve job is complete, we also unshroud the valves to enhance flow. This increases airflow over the ports, allowing for more efficient combustion and better overall performance. To achieve this, our technicians reshape the ports, modify the bowl and chamber to ensure that each part of the engine works together harmoniously. With a high-performance valve job, engine power is increased and the car’s performance is improved. Additionally, a properly done valve job can reduce fuel consumption, making it even more worth the effort.  On some of our higher performance builds we install oversize valves and machine a five-angle valve job for better performance.

We have spent many years perfecting our craft, and we only use the highest quality components. Our bikes are designed to be reliable as well as powerful, and each one is built with an attention to detail that sets us apart from other builders. We also make sure to regularly test our bikes on the track to ensure their performance before they leave our shop.

At the end of the day, we are proud to deliver a custom-built bike that is sure to please. That’s why more and more motocross enthusiasts come back to us time and time again for their specialized builds. With our expert craftsmanship and attention to detail, you can rest assured that your bike will be a one-of-a-kind masterpiece.

Quality of our work

We stand behind the quality of our work for each bike we build. This guarantees and allows you to have peace of mind when it comes to your custom-built motocross bike, knowing that we will be there to help if any issues arise in the future. Let us start your engine build today and take your motocross racing to the next level with FastMann Racing Engines. Contact us for more information about our engines and dyno tuning and how we can help you get the most out of your ride.


From motocross to street bikes, FastMann Racing offers 25+ years of top-tier motorsport tuning
and repair services that are sure to enhance your ride. Our


Monday-Friday: 9am to 5pm
9990 Corner Rd. Mercersburg, PA 17236
(717) 328-5543