twyztid
VIP Member
- Joined
- Feb 14, 2011
- Messages
- 982
- Reaction score
- 489
- Points
- 1,078
- Location
- Middleville, MI
- Country
- USA
- Snowmobile
- 2025 Sidewinder LTX LE EPS
2017 Sidewinder LTX SE
2012 Apex XTX
2012 RS Vector LTX
- LOCATION
- Middleville, MI
I am looking for some clutching insight for my 15 LTX SE MPI Turbo. I know most of you do not run a roller secondary. Mine came with an STM roller secondary and STM Supertips primary weights (those are installed now and work well). I may want to try the stock secondary as well but I don't know where to start with the helix or spring because I think the stock secondaries react differently to helix angles than a roller. My STM roller uses the old style Arctic Cat helix. It currently has a 54/38 helix in it now. I don't want a reverse helix because it builds boost quite fast as it is. I have seen some run a 46/40 helix with the MPI turbo. Is that a good starting point or would a stock Apex 51/43 helix be good? What spring and what wrap would be a good match and perform well for trail riding... on/off throttle a lot?
