Looking to get a little more kick from my sled. I have read several of the forums and have considered doing some clutching modifications. Seems like several guys have tried the EPI maroon spring with 10-64 weights. If I try this setup what kind of changes can I expect. More bottom end?....less top end?....anyone able to answer this? I would go with a pipe and can setup but my sled has had engine issues in the past...pto burn down...leaned out. I'm not comfortable with it yet....I have 1000 miles on it since the rebuild and everything seems to be working fine.....probably try the pipe for next season if it doesn't blow up again.

I just changed back to the stock 10-62 primary weights from 10-64s (stock spring) to gain back the 200-300 RPMs lost. It wouldn't rev above 7,800 with the 10-64s. It seemed to pull good through the mid range and go 2-3 MPH faster on long runs but it lost the responsiveness I liked corner to corner.

my bro raced my dads friends iq with the epi, and he beat him, his son was on his sled and he drag races hig xcr 800. they did not go from a dead stop it was going down the trail and the weight of them is close. bros sled is stock, just has a slp can on it. and it taching way to high know up over 8400 where do u want it like 8300 or what. we are going to leave it said it is running awesome