Unleash Your Ride's Potential
Welcome to 603mods Rochester, NH
Family-owned with over 20 years of experience in motocross, restoration, race prep, and performance tuning.
Our Legacy in Motocross Excellence
Welcome to 603mods, a small, family-run shop based in Rochester, New Hampshire. With years of experience riding, racing, and building bikes, we’re proud to offer advanced restoration and performance services to riders across the Seacoast, Lakes Region, and Southern Maine.
Whether you’re reviving a vintage two-stroke, dialing in your race setup, or protecting parts with cutting-edge coatings, 603mods has you covered. We bring together hands-on expertise, precision craftsmanship, and rider-focused care to make every build race-ready.
Our Specialized Services
Vapor Honing & Wet Blasting
Cerakote Finishes
Two-Stroke Motor Building
Motocross Race Prep
Wheel Building
Carburetor Rebuilds & Restoration
Our Work in Action
Explore Our Image Gallery
Upcoming Events
Winchester Supercross Race 1
Join us for an exhilarating night race at Winchester, NH. Witness top-tier motocross action under the lights!
April 12, 2025
FREE Admission
TMA Supercross Rd #2 Spring
Experience the thrill of daytime racing at Winchester, NH. Perfect for fans of high-speed motocross!
May 3, 2025
FREE Admission
Maine Motocross Series
Catch the action at MX207, ME, as riders compete in this exciting motocross event!
May 3, 2025
FREE Admission
Maine Motocross Series
Don’t miss the adrenaline-pumping races at Hemond’s MX Park, ME. A must-see for motocross fans!
June 7, 2025
FREE Admission
Ready to Transform Your Ride?
Discover the unparalleled craftsmanship of @603mods. Whether you’re looking to enhance performance or restore your bike to its former glory, our expert team is here to assist. Dive into our gallery to see our work in action or reach out to start your project today!