Description

Can-Am Defender HD8 Master Top End Refresh Kit

The Can-Am Defender HD8 Master Top End Refresh Kit gives your 2016–2021 HD8 a focused upper-end service without replacing more than you need. It targets sealing and airflow so you regain compression, reduce oil consumption, and restore throttle response. Moreover, it’s a smart step when your cylinders and pistons are reusable but the rings and valves need attention.

This Kit Includes:

• Top End Gasket Kit
• (2) Piston Ring Kit
• (4) Intake Valve
• (4) Exhaust Valve

This Can-Am Defender HD8 Master Top End Refresh Kit replaces the wear items that most often cause low compression, misfires, or oil burn. New piston rings help restore seal at the cylinder walls, while the intake and exhaust valves renew airflow and seating. Additionally, the top-end gasket kit helps prevent coolant and oil leaks after reassembly.

Choose this Master Top End Refresh when leak-down shows ring or valve issues, yet your cylinders remain in spec. It offers more coverage than a standard Top End Refresh because it adds valves, but it avoids the cost of new cylinders found in a Complete or Master Top End Rebuild. Consequently, you get strong results with an efficient parts list.

All components meet or exceed OEM standards for fit and durability. Installation is straightforward for experienced DIY builders and professional shops. For an even broader service, pair this refresh with a bottom-end refresh kit to stabilize timing, sealing, and bearing support at the same time.

Every REV6 kit ships nationwide and includes a 1‑year warranty. If you’re deciding between Refresh, Complete, or Master levels, our team can help you choose the best path based on hours, symptoms, and budget.

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• Contact Us for fitment checks or installation help
• Warranty Policy for coverage details
• FAQ for common install and shipping questions
• Engine Rebuild Kit Guide to compare kit tiers