Precision-engineered in Ellington, Connecticut. Built for riders who demand more.
Rotation Engineering didn’t start in a bike shop. It started in a race shop.
Long before our name was etched on a bottom bracket, we were building
championship-grade components for motorsports. Founder Seth Carlson
spent over two decades crafting precision parts for the most demanding
race teams in the world—Formula 1, IndyCar, NASCAR, and Rally. In those
environments, there’s no margin for error. Everything must be perfect.
And durable. And fast.
But even with that pedigree, Seth saw something missing in the
cycling world. As a rider himself, he experienced what many serious
cyclists do: component failure under load, loose tolerances, short
lifespans. The parts available just didn’t meet the standard he knew was
possible. They were made for recreational use—not racing, not real
stress, not real riders.
So in 2021, he set up shop in Ellington, Connecticut, and brought his
motorsports mindset to cycling. Rotation Engineering was born with a
single goal: to apply motorsports precision to the parts that make or
break a bike’s performance—bottom brackets, hubs, headsets, and bearing
assemblies. If it spins, we engineer it better.






