Best Fix kit for 2013 Pro???

[maxitout77]

So all I need is the direct piston replacement and call it good?

http://www.2strokeheads.com/Polarispistons.htm

Is it worth going with the high performance head for the extra $500????

Yes, and, ummm..... yes. The head is a nice upgrade but you can add that at anytime.

Its all about cylinder and piston tolerances. When I tore mine down at 1600 miles, I mic'd the cylinders and magnafluxed them. They were fine, The stock pistons however, both skirts had collapsed in slightly. I have no doubt they would have caused serious damage in another 1000 miles. This was primarily a 11-12 problem, but can happen in 13+. The RK Tek pistons made it run like a new sled. Idled nice and smooth and felt smoother through the rpm range.

I am personally not a believer in the "fix kits". Talk to Kelsey at RK Tek for 10 minutes and you'll see where I'm coming from. Raising the jugs and going with a taller piston does work, but its unnecessary to fix piston slap or poor tolerance problems.

 

[geo]

Were you talking of Rev1 or Rev2 theory? If your throwing in some pistons anyway.

 

[MikeMetzger]

Im not even sure what that means?

 

[MikeMetzger]

Just called em up and ordered some new pistons. The head upgrade requires a fuel controller as well for the 2013's and I didn't have the $$ to swing the whole setup. So at least for now I shouldn't have to worry about a skirt dropping to my crank and detonating my one source of true happiness lol

 

[Snodawg]

Mike too bad you already ordered. You should have called Curt at Fastrax. He would have steered you in the right direction. Like said above, there is a lot of snake oil out there. At least take your cylinders to him to measure and inspect. He has a good eye and is very intelligent on these motors. Also, you might want to have him do the cheap fix on the crankshaft thrust. Insurance against a catastrophic failure.

 

[MikeMetzger]

Good lord, there's just too much and too many opinions to keep up on. Whats wrong with the crank? I thought the piston skirt was the issue?

 

[Ultrasauras]

2013

Just called em up and ordered some new pistons. The head upgrade requires a fuel controller as well for the 2013's and I didn't have the $$ to swing the whole setup. So at least for now I shouldn't have to worry about a skirt dropping to my crank and detonating my one source of true happiness lol

we run a mtn tk fix kit and a PA head on a 13 with out a fuel controller 500 miles now turning a 163 3 inch no issues works good

 

[Norway]

Mike too bad you already ordered. You should have called Curt at Fastrax. He would have steered you in the right direction. Like said above, there is a lot of snake oil out there. At least take your cylinders to him to measure and inspect. He has a good eye and is very intelligent on these motors. Also, you might want to have him do the cheap fix on the crankshaft thrust. Insurance against a catastrophic failure.

crankshaft thrust?? Do tell!!

 

[Snowbird11]

I installed a RKT DI kit 2 years ago in my 11 assault. Swapped that to my 12 assault. Worked real good in both sleds.
Now updating to his rev 2 kit in my 12.

Going back over the directions I see one of the steps is to check the ring end gap to 18-20 thou....I haven't done this on any of the installs, have you guys been checking the gap before installation?

i thought i had mine gaped correctly but on inspection they were a hair too tight. i tore it back down, got new rings, re honed and did it right. i got lucky i guess.