Powersports Machine Shop

Doug Duffy Motorsports specializes in precision engine machining for dirt bikes, ATVs, UTVs, motorcycles, and other single-cylinder powersports engines. Our services include cylinder boring and honing (1.75”–4.00”), cylinder re-sleeving, cylinder head machining, valve seat cutting, valve jobs, head resurfacing, crankshaft rebuilding, and other engine machine work designed to restore performance and reliability.

We are a machine shop focused on engine rebuilding and machining services. We do not offer general motorcycle, ATV, or UTV repair, tire changes, oil changes, diagnostics, electrical repairs, suspension service, or routine maintenance. We also do not perform complete vehicle repairs outside of engine machining and rebuilding services.

Whether you’re rebuilding a stock engine, repairing a worn cylinder, or building a high-performance race engine, Doug Duffy Motorsports provides expert craftsmanship, precise measurements, and quality machine work to help your engine perform at its best.

Our mission is simple: to be your go-to shop for all things powersports. We’re passionate about helping riders maximize their vehicle’s potential and keep them on the road or trail longer. With Doug Duffy Motorsports, you’re not just another customer—you’re part of our motorsports family.

Thank you for choosing Doug Duffy Motorsports. We look forward to getting you back on the track or trail with confidence!