4 1/2' diameter and 15' wide aluminum drum tube with 'Killer Kool' Road Load Headwind Fan. Aluminum end caps.
The headwind fan provides a rider with greater resistance and allows for higher aerobic and anaerobic levels of exercise.
Rollers adjust from 31.5' to 47.75' wheel base. No tools are required.
Note: Fork Stand and Rear Flywheels shown are sold separate.
![Kreitler Challenger 3.0 Rollers 15" drum](https://cdn11.bigcommerce.com/s-kvyj4/images/stencil/500x659/products/129/315/krt-ply__47879.1375838206.jpg?c=2 "Kreitler Challenger 3.0 Rollers 15" drum")
![Kreitler Challenger 2.25 Rollers 15" drum](https://cdn11.bigcommerce.com/s-kvyj4/images/stencil/500x659/products/130/316/krt-plm__54447.1375838206.jpg?c=2 "Kreitler Challenger 2.25 Rollers 15" drum")