Race - Repair - Ride -
Race - Repair - Ride -
We are designers, engineers, machinists, & technicians spending our lifetime in the powersports industry.
Our philosophy
Performance isn’t an accident—it’s an exact science. Our philosophy at Grand River Racing is rooted in the hard laws of thermodynamics and fluid flow.
We replace guesswork and theory with data analysis and scientific precision, ensuring that every engine we build produces maximum power, and can still handle the extreme stresses of the track.
By analyzing real-world data and refining the physics of the combustion process, we deliver powerplants that are scientifically optimized for maximum output and unyielding reliability. Treating every transfer port and exhaust system as a challenge of physics, we create engines that don't just post dyno numbers, they win races.
Known across the racing community as the gold standard, our builds are trusted by racers who demand results — not excuses.
We build complete engines, exhaust pipes, cut heads, two stroke and four stroke porting, auto transmissions, chassis fabrication, crankshaft stroking and rebuilding.
If you want to be the one that puts the others on the trailer, you need to be running with Grand River Racing!!
Our Reputation
Our History
Grand River Racing has been leading research and development of competition powersports engines since 1996. We have built engines, exhaust pipes, and chassis for machines that hold many World Records, track records, and class records.
Not only have we led the Banshee racing game for over 25 years, but we will also continue to do so with new technology including CAD, data acquisition, lightweight materials, digital ignition, and fuel injection.
Grand River Racing builds any competition powersports engine including outboard boats, snowmobile drag and oval, karts, motocross, hill climb, ice oval, Hot Saw, Pikes Peak, and even Bonneville land speed bikes.
