YZ85 Cylinder Repair – High-Performance 2-Stroke MachiningThe Yamaha YZ85 is a sharp, high-revving 2-stroke machine that demands precision from its cylinder to perform at its best.
If your cylinder has lost compression, shows scoring, or has excessive wear, a resleeve is often the most durable long-term solution.
MotoMonk provides a dedicated YZ85 cylinder repair service, including model-specific sleeving, precision finishing, and port chamfering, to restore reliability and optimal performance.
YOUTUBE Video how we sleeve a Nikasil cylinder.https://www.youtube.com/watch?v=Ma68gdH2QQY&t=190s
Why Choose MotoMonk for Your YZ85 Cylinder?
Extensive experience with YZ85 2-stroke engines
Resleeving and machining performed to exact tolerances
Focused on cylinder longevity, port durability, and piston fitment
Detailed inspection and recommendations provided before any work
Yamaha YZ85 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.