Question for those who extended their Apex to a 136?

[number1kyster]

Looks like the stock pro-active rails can't handle the extra length. I'm going to stay with 121 and put a Cobra or Predator on it.

 

[779cookies]

Looks like the stock pro-active rails can't handle the extra length. I'm going to stay with 121 and put a Cobra or Predator on it.

Where are you getting that info from?
I'm also considering a stretch or relocation of the pro-active to 128" and looking for feedback on both options.
The 06 RTX with the extension, ran a mono skid, Yamaha race sleds set back the nitro skids (very similar to the pro-active) 4" to make them 128".

 

[number1kyster]

There used to be a member on here that did the stretch and bent his rails 3 times in 1,300 miles. I believe muffinworks has had issues with the proactive rails as well.