Challanger extreme track

I just put mine on and left it alone. before you trim it put it on and see if you think you need to.

The trimming process is easy with a sharp carpet knife and some silicone spray to lubricate the blade. Takes about an hour max.

But...you are taking an already super stiff track and making it stiffer...and making it pretty much worthless if you want to sell it.

The only ones that I know of that trimmed the 2.5" ch ext are turbo guys in west coast snow. or Hilclimbers...

Trimming this track will make this track more prone to trenching.

You would be better off running the new style Avid 3" pitch, 7 tooth drivers and the 156" x 15x2.5" track with 3" pitch. Same rails. The smaller drivers will give you clearance.

There are many that will run the 155" CE track on thier Pros... but they would be better off with more clearance, IMO.

I agree with mountainhorse. The CE will be very stiff with 1/4" trimmed. The stock 5.1 trimmed 1/4" acts a little more like the CE. The CE is an awesome track, but I think you will be changing it too much by trimming it. I had the CE on my 2009 D8 and it cleared fine. If I kept the sled I might have looked at a D&R kit. I'm not sure about the Pro RMK, but I've heard that the CE will clear.