Heel Clicker
I first bought the HC-X for my secondary two seasons ago and last year bought the hammertime for the primary. It takes some tuning but it (secondary) worked very well for me. When I added the hammertime for the primary last season, again, it took a little tuning but I was very impressed. I have purchased clutch kits from manufacturers over the years that have claimed to work very well and had less than satisfactory results. They worked but not like this. In fact, it worked so well I told a friend of mine and he purchased the whole HC-X secondary clutch that they offer and the hammertime for the primary (this was feb. of this year) and we got substantial gains on a stock 2000 srx. He was very skeptical and is now also a believer. They do have helpful tuning charts to at least get you in the ball park and from there do some tweekin. I don't know about anyone else but I was as impressed with the clutching set up as much as I was when I added the triple pipes. We got all this from sledgear.com and they were pretty good about help as well. The only difference between the heelclicker and hammertime it that hammertime has a pivoting shoulder to transfer weight across the shift curve. Very cool. Like I said I don't know about anyone else but I had very good luck with them.