Dirt Bike & Trail Bike Cylinder Repair Service
This is a general cylinder repair service for dirt bikes and trail bikes, covering all major 2 stroke models.
If your cylinder is worn, scratched, seized, out of round, or otherwise damaged, we inspect it and determine the correct professional repair method.
YOUTUBE Video how we sleeve a Nikasil cylinder.
https://www.youtube.com/watch?v=Ma68gdH2QQY&t=190s
Why Choose MotoMonk for Your Dirt Bike Cylinder Repair?
Extensive experience with Dirt Bike and other small-bore race engines
Resleeving optimized for high-RPM reliability and ring life
Stable bore geometry for crisp throttle response and clean jetting
Future serviceability through oversize piston options
Dirt Bike Cylinder Repair / Resleeve
✅ Cylinder sleeved with a model-specific cast iron sleeve
✅ Precision machining for sleeve installation
✅ Port chamfering after sleeving
✅ Final bore & professional honing on our Sunnen honing machine
✅ Cylinder deck machined for optimal gasket surface👉 Optional: Porting services are available upon request. Please contact us before work begins if porting is desired.
What’s Not Included
All parts (including the sleeve)
Piston, rings, bearings, studs, gaskets, seals
Power valve service, cleaning, or repair
Shipping & handlingCylinders must arrive fully stripped. Studs, gaskets, power valve components, and all attachments must be removed. Cylinders received assembled will incur additional labor charges.