![]() ![]() (Contact DR to confirm service is offered for your make/model)Īll engine builds at DR are given the same attention from stockers to championship contenders. DR also offers its engine build services to select Motorcycle and UTV models. DR has proven builds for all types of ATV racing motocross, off-road, desert, TT, Cross Country, Flat Track, Drag Racing, Ice Racing, if ATV’s race it DR builds.ĭR also specializes in recreation and stock builds from sand duning to trail riding DR is experience allows them to handle vintage builds to the newest sport models latest models. DR engines have won more races worldwide than any other ATV builder in the world, from Baja to Dakar, Pikes Peak to Loretta Lynn’s DR has built winner’s. From full racing engines to stock rebuilds DR does it all. Since that time DR has built thousands of 2 and 4 stroke engines worldwide. Simply put, there’s no one else in the business who knows as much about building and tuning custom high-performance engines than us, and we’re ready to show you why that’s the case.Duncan Racing has been building ATV engines since the first ATC 90 hit US soil. We are fully equipped for external dry sump oiling systems, as well. ![]() Our dynos can handle up to 1,500 hp, so big boost is always welcome. We accomplish this with our two in-house Super Flow Engine Dynamometers that allow us to break the engine in and properly seat the piston rings as well as tune all modern-day aftermarket EFI systems for both street and race use. We also provide you with full dyno break-in and tuning services at our performance tuning shop. ![]() The combination of our equipment and the expertise of our people make us the go-to performance engine shop as well as the top engine rebuild shop in the area. Our capabilities as racing engine builders also include cleaning as well as block and crank operations. All engine balancing is done in-house on our Hines Dynamic Balancer for super-smooth engine operation. This enables us to produce the straightest and roundest cylinders to ensure a perfect ring seal. When you’re looking for high-performance engine builders that can deliver the power you want, look no further than us.Īs your custom engine builders, we have a complete state-of-the-art machine shop on-site featuring equipment such as the new Sunnen SV-15 cylinder hone. We also offer custom-made pistons from both Wiseco and JE, and custom ground street and race cams from Bullet Racing and Competition Cams. Here at Golen Engine, we offer a full line of high-performance LSx engine builds using all American-made components from trusted brands such as GM, Callies, Mahle and Comp Cams - just to name a few. ![]()
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