Tunnel cooler for water to air intercooler

[yamaha_junky626]

I'm installing a water to air intercooler on my rmk and was planning on using a 4" wide cooler approximately 30" long so it would reach to about the back of the fuel tank and my total u cooler length would be a little over 60" . I am wondering if this will be enough surface area to the keep the intercooler cool. Most of the u coolers i see for this application are the full tunnel lenght but don't appear to be as wide.

 

[Vertical Asshauler]

All the water to air kits we did had a cooler the same dimensions as the one you have. Had no problem keeping the air charge icey cold!