There are lots of clutch kits out there that use EPI or Dalton springs....there is a limited number of companies that can make a quality spring.Im running 28" tires and seem to have a bit of belt slippage now thats why I was going with a clutch kit.Dragonfires clutch kit arrived and well son of a bitch! Its says epi on the helix!I think they are selling epi's stuff claiming it is theirs.
Im running 28" swamp lites. You tell dragonfire what you are running for tires, exhaust, programmers ect, and what elevation your riding at and they send you the weights and springs that they think will work best for you.