Truett & Osborn Cycle

Manufacturer of the original"TorqueMonster" flywheels for Flathead, Knucklehead, Panhead, Shovelhead, and Evolution Big Twins.
 Also manufacturer of stroker flywheels for Sportster, 45 cubic inch, and JD models. 

37 Years of Specializing in Harley-Davidson^® Speed Work and Parts.
We offer Complete Engine Service and Specialize in Stroker Flywheel Assemblies.

Send Your Flywheels for Dynamic Balancing or Let Us Build your entire Crank Assembly.

Stroker Pistons for 45 Cubic Inch Flatheads Have Arrived.
Standard 2.745" thru 0.080 Oversize Available.

If you Like Vintage Harley-Davidson Check out these Cool Links.

The words Harley-Davidson, Sportster, Superglide, Electra Glide, FL, FLH, FX, FXE, XL, XLH and XLCH and some part numbers are used as a reference only. The intention of Truett & Osborn is that our products can be used on Harley-Davidson motorcycles, and no products on this site are made by or with the permission of the Harley-Davidson Motor Company.