’86 ATC250R/TRX250R Pro-X Ported 330 Cylinder Kit
CT/Pro-X cylinders are the leading power producing upgrade currently available for Honda 250R engines. CT/Pro-X cylinders are available from 250cc to 410cc (stroked). Whether you are building a “drag only” ATC or an “all round fun” 4Trax, CT has a combination to suit your needs. All CT/Pro-X cylinder kits include these advanced features:
- 100% greater coolant capacity over OEM cylinders.
- Full water jacket exhaust port tunnel for fade-free power.
- O-ring head gaskets for optimum heat transfer and easy maintenance.
- Custom forged piston kit.
- Removable iron liner makes Pro-X cylinders infinitely rebuildable.
- Modern 10-window CT porting layout. CT builds each cylinder order according to your requirements. You may specify your preferred power characteristics