Maybe not to much difference, just in name and price. I've got the SE Double Barrels and I love them. They have the a loud, but lower tone to them. No high pitch what so ever! I had the 1450 ST1 EFI kit, as well as the Dynojet installed with the pipes. The price of the pipes was $499.95, the dynajet was $74.95, and the EFI kit was 139.95. I also had the baffles taken out later, but that's just me.

I hope this help and I back my pipes %100. I get so many compliments, I don't know whether its the rider or it's the bike itself

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