BUILT FOR PERFORMANCE. ROOTED IN EXPERIENCE.
Race-Ready Mods. Rider-Run Service.
Two-stroke builds, precision tuning, and honest prep work—done by racers, for racers.
Race-Ready Services, Built for Riders
Motocross Performance & Restoration Services — Rochester, NH
At 603mods, we specialize in two-stroke engine builds, vapor blasting, Cerakote, and race-focused prep for motocross riders across New Hampshire, Southern Maine, and New England.
🔧 Two-Stroke ENGINE Builds
Complete engine builds for stock and mod two-strokes. We handle full tear-downs, crank and piston service, gasket kits, timing, vapor blasting, Cerakote, and reassembly. Drop off your motor or full bike — we’ll return it clean, coated, and ready to rip.
🛠️ Race Prep & Weekly Maintenance
Mid-week race prep for busy moto parents and privateer racers. We handle pressure washing, bolt checks, oil, air filters, chains, sprockets, linkages, and bearings — so your bike shows up ready when the gate drops. Drop it off after Sunday’s motos and pick it up dialed for Wednesday practice or the next race.
🔬 Vapor Honing & Wet Blasting
Restore your bike’s components to their original glory with our precision vapor blasting, ensuring a clean and smooth finish that enhances performance and longevity.
🎯 Cerakote Coating
Protect and personalize your ride with our durable Cerakote coating, offering superior resistance to wear and corrosion while adding a custom touch.
Wheel Building
Custom wheel builds for modern and vintage bikes. Whether you need a full lace-and-true with fresh spokes or want to match hubs, rims, and nipples for a clean look — we’ve got you covered. We also offer custom Cerakote hub finishes to complete the setup.
Carb Rebuilds & Jetting
Most carbs that hit our bench are gummed up from ethanol, leaking from stuck floats, or just overdue for a refresh. Whether it’s a seasonal tune-up or a full overhaul, we disassemble, ultrasonic clean, vapor blast, and rebuild every unit with fresh gaskets, o-rings, and jet block seals. If jetting changes are needed, we dial that in too. 9 times out of 10, a clean carb with proper seals brings the bike back to life.
Get Started with @603mods
Ready to elevate your motocross experience? Contact us today to learn more about our services or to request a personalized quote.
Key Features of Our Services
Precision and Quality
Every service we offer is executed with meticulous attention to detail, ensuring top-notch quality and precision in every aspect.
Customization Options
Our services provide extensive customization options, allowing you to personalize your bike to reflect your unique style and preferences.
Enhanced Durability
With our advanced techniques and materials, we enhance the durability of your bike, ensuring it withstands the toughest conditions.
Our Work in Action
🧢 Gear Up with 603Mods Merch
Rep the shop. Support the grind. Fuel the team.