About Us
Above and Beyond Quality
Quality at a fair honest price. Making a good ring is a Skill.
Making a fine ring is an Art! We strive for perfection in an effort to continue what Frank Bowman started many years ago.
RMJ Machine Worx manufactures custom reproduction piston rings for small and vintage engines.
(custom piston rings, bowman rings)
When you order from us, whether it's your first or tenth time, you become part of our family. We hope that your purchase from us becomes the first of many.
Our Promise
We promise to treat our customers with the honesty and respect they deserve. We pride ourselves on the quality of our workmanship and we want customers to feel satisfaction in choosing RMJ Machine Worx for their piston ring needs. We hope you will be a part of our family for many years to come.