Fillman Machining, LLC

We were deeply saddened to hear of the passing of Mark Hamilton, an extraordinarily important figure in the history of ROKON. Rest in peace, Mark.

I added the 1 7/8" and 2" hitch balls that are adapted to fit on stock tow bars with 5/8" diameter holes. There are some MK4 tow bars with 1/2" holes and limited clearance to the rigid rod. https://fillmanmachining.com/product/1-7-8-hitch-ball/ https://fillmanmachining.com/product/2-hitch-ball/

https://fillmanmachining.com/mk0-vs-mk1-handlebar-comparis/

I know this is not original but I install parking brakes on all of our bikes due to the steep terrain we ride on. I first saw an improvised parking brake on a barn find MK4 auto bike about 15 years ago.....

It is with a sad heart we share the passing of Orla Larson. He was the founder of the Rokon /rock-on/ Company. Fillman Machining had the privileged of Orla staying at our house, on our sofa several years ago. We have never met anyone who so enjoyed every aspect of life. His personality was truly bigger than life. Our thoughts and prayers are with his family today.