Clean up your carb. Ditch the junk you don't need!
The air cut-off valve on the Keihin CVK40 carb is known to crack, leak, and complicate tuning — especially with aftermarket exhausts or jet kits. This Air Cut-Off Block Kit replaces that whole assembly with a clean, anodized billet aluminum plate, laser-etched with the MCP logo.
Designed to help simplify your carb, reduce vacuum leaks, and sharpen throttle response.
Fits:
- All Kawasaki KLR650 (1987–2018) with Keihin CVK40
- All Kawasaki KLR600 & KLX650 with Keihin CVK40
- Any other bike running a CVK40 (check your cut-off valve layout)
Why block it off?
Air cut valves often fail with age
Common source of hanging idle, backfire, or poor decel
Unnecessary with proper jetting/tuning (especially with opened-up exhaust)
Features:
CNC-machined aluminum, anodized and laser-etched
Comes with the oring to seal the perimeter & plug for the vacuum port
Direct bolt-on delete for air cut-off valve
Made in Canada by Mega City Performance
Install Notes: Easy swap with the carb on the bench. Just remove the OEM air cut-off valve, bolt this in, and you’re done.
MCP Air Cut-Off Block Kit - KLR650
- CNC-machined aluminum, anodized and laser-etched
- Comes with stainless hardware and gasket
- Direct bolt-on delete for air cut valve
