Performance engineering
Precision Engine builds for road and track
JPR Motorcycles offers a complete suite of engine refresh and engine tuning services tailored to your exact performance targets. Whether you need a standard refresh to restore a tired motor, strategic tuning to secure a reliable gain in usable power, or full Superbike tune to extract the absolute maximum performance from your machine, every single build is treated with identical attention to detail.
Track assurance
With a state-of-the-art diagnostic dyno onsite, you never have to guess at the final results. Your motorcycle can be returned fully run-in, perfectly mapped, and verified under real-world load conditions, ensuring it is 100% stable and ready to hit the track or road the second you load it off the trailer.
Standard refresh
- ✓ Complete engine teardown and deep chemical cleaning
- ✓ Full measurement of internal wear tolerances
- ✓ Valve resealing, clearance adjustments, and fresh gaskets
- ✓ Component replacement to restore factory efficiency
Performance tuning
- ✓ Cylinder head porting and combustion chamber optimization
- ✓ Balanced crankshaft assemblies
- ✓ High compression pistons
- ✓ Maximum power delivery configured for elite competition
- ✓ Full race spec blue printing
- ✓ Performance camshaft installation and timing calibration
- ✓ Compression adjustments and optimized squish setups
- ✓ Targeted modifications for reliable, linear power gains
Championship winning experience
Built by James
James brings many years of elite motorsport experience building highly successful race engines that have claimed lap records, podium finishes, and outright victories from competitive club racing all the way up to World Championship events. When you trust JPR with an engine build, your machine is receiving the exact level of mechanical expertise, strict repeatability, and tight tolerance management required to survive and dominate at the absolute limits of the sport.
World supersport elite
Kove factory team engine builder
The standard of workmanship at JPR is proven at the highest tier of global motorcycle racing. James actively serves as the official engine builder for the Kove Factory World SPB team, engineering the very powerplants that compete on the world stage. This continuous, real-world development directly benefits every local track-day rider and club racer who walks through our doors—bringing genuine, current World Championship technical knowledge and assembly precision straight to your personal engine block.
