just found this out today. the rollers in the driven clutch are now way bigger? and the helix is die cast instead of the sand cast used for years? talk with venom this morning. they just found out as well. there will not be a 2 ramp helix for these. not enough room. we have over 100 clutch kits for these already sold. great going to cost us to make this right. the easiest way is by just replacing the rollers. then the older helix will work. this from venom. so no more twin trax helix. that kind of suck's. no word of wye the change? venom has no idea why they did this yet.