Best powder track for 144" 800 IQ RMK

[Sundance Kid]

I'm looking at swapping engines in a 2008-10 RMK 144 chassis and looking for the best powder track option.
I'll be pulling the 600 and installing an SLP 800 BB 160 HP single pipe Perf package piece. I think the stock 144"/2" could use a little help with the 40 HP increase.

Looked at Tracks USA site and the 146"/2.5" Challenger Extreme caught my eye as a possibility. Don't know anything about this track.
Also noticed that a 150"/2.5" is offered. Can a 150" be installed on a 144" skid with bigger rear idler wheels? What about the tunnel length? Don't want to add rail or tunnel extensions.

Please chime in with what you've used and how you like it.

 

[diamonddave]

Can a 150" be installed on a 144" skid with bigger rear idler wheels?

No, I don't believe it will work. Not only that, larger wheels (assuming this is a RAW) will allow the track to bottom out on the tunnel.

Honestly, if you are going through the expense of a BB 800, and a new track, why not just buy the correct rails. If you do any off trail or any deep snow riding, you will thank your self with going to a 153 powerclaw or 155 Challenger. IMO a 144 or 146, just isn't enough for out West type of riding.

 

[Sundance Kid]

Yeah, its a RAW chassis.
I've been thinking that it should be at least a 155 for an 800.
A set of 155 RMK stock rails should be pretty easy to come up with.
I wanted a 155 chassis to start with but the 144 will have to do, unless someone knows of a good 2008 or newer 155 chassis for sale at a decent price.

 

[1RMDave]

I picked up a set of 151 rails, they were about $100 on ebay.