Dynamic Engine

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Race engines

Generally, our engine builds are customized to accommodate a budget, level of performance and durability needed for each customer.

Professional Build

This a fully modified fire breathing LEGAL race engine. Purpose built and running at maximum performance and efficiency. Builds typically include CNC ported heads, Moldstar90 valve seats, Newen CNC valve job, bronze valve guides, custom titanium valves, stiffer valve springs. High compression, race fuel only and not built for burning hours and hours of practice laps. Nearly every engine component is either modified, massaged or replaced with a purpose built race part.
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Models:

  • Modern 4-Stroke | 250cc -450cc

​Turn-Around Time:

  • 2-5 weeks

Engine Durability Limits Before Next Service or Rebuild:

  • 10-20 Hours – varies by rider, conditions and maintenance

Typical Engine Specs:

  • 15-30% Power Increase

  • Race Fuel Only! VP Pro6, Renegade SX4+or better.

  • High Compression Engine | 250cc = 15.5:1+ | 450cc 12.5:1+

  • CP Carrillo Rod (MUST BE USED – Not Optional)

  • Stiffer Valve Springs

  • Custom Piston w/DLC Pin

  • Custom Cylinder Head Porting

  • Custom Camshafts

  • Custom Valves

  • Manual Cam Chain Tensioner

  • ASF Superfinishing of Internals

  • Aftermarket ECU: Vortex | AIM Electronics w/Custom Mapping (Dyno Tuning Available)

  • Assembled with OEM or better than OEM gaskets, seals and bearings

​Average Cost w/Parts & Labor:

  • $3,500 – $10,000

Amateur

In the amateur motocross world there are a never ending amount of classes to compete in with varying rules. We offer stock or modified race engines in various levels to fit the rules per your sanctioning body. These performance and reliability oriented race engines built for all class levels… D, C, B and A classes.

Models:

  • Modern 4-Stroke | 250cc -450cc

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Turn-Around Time:

  • 2-4 weeks

Engine Durability Limits Before Next Service or Rebuild:

  • 20-30 Hours – varies by rider, conditions and maintenance

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Typical Engine Specs:

  • 0-10% Power Increase

  • Pump Fuel & Race Fuel Mapping Available

  • Higher Compression Piston

  • Ported Head

  • Stiffer Valve Springs

  • Assembled with OEM or better than OEM gaskets, seals and bearings

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Average Cost w/Parts & Labor:

  • $2,000 – $3,500

Enthusiast

These engines are built with a combination of high quality aftermarket and OEM parts. Typically equipped with tasteful modifications and built to last and not giving you any trouble on the track or trail. Specs and power levels heavily dependent on customer budget. Runs on pump fuel, mild compression and PLENTY of reliability. ​

Models:

  • Modern 4-Stroke | 250cc -450cc

​Turn-Around Time:

  • 2-3 weeks

Engine Durability Limits Before Next Service or Rebuild:

  • 40-60 Hours – varies by rider, conditions and maintenance

Typical Engine Specs:

  • 0-10% Power Increase

  • Pump Fuel

  • Slightly higher compression piston

  • Assembled with OEM or better than OEM gaskets, seals and bearings

​Average Cost w/Parts & Labor:

  • $1,500 – $2,500