I have a 1997 polaris XC600 triple with SLP pipes and heads i was just wondering if anyone could recommend a good aggressive trail clutching setup, I am currently running a polaris blue spring with 10MB arms (47.5 grams), secondary I am using a 42/34 helix with SLP Black spring. I am looking for a setup with a very good bakshift, any help would be very much appreciated.

Keep the 42/34 helix as long as it's a progressive rate. Run a Polaris H weight. It's 49.5 grams but is lighter near the pin and heavier at the tip. This allows you pull that steeper 42 helix off engagement without a bog. Right now you might have the secondary a little too tight to help pull the 42 off engagement then you lose top end but still get good backshifting. Your weights and your helix are fighting each other now and you might be playing secondary springs with different side pressures or just plain tightening the spring to fix the weight problem.
The heavier tip will really help your top end with the 34 helix. Get a Chopper City Sports (Blaine MN) lavender secondary. It has more side pressure but the same torsional tension as stock. This will force the great backshift without preventing the secondary from shifting out all the way. Keep the blue primary spring. My brother ran this setup on his 96 with slp triple pipes, heads, Dial-A-Jets and UFO's and would beat much bigger displacement sleds on the lake all day long. It also backshifts excellent. Real crisp and super smooth but hard acceleration. We mostly ditch banged and diced in the woods so it proved itself well on the lake and in the woods.
I wish I had more time to explain how these different parts interact but I have to get up in a few hrs for work. We really tried a lot of combinations ( several years of tinkering to understand how each part affects the whole setup)before finding this worked on our sleds.

Thanks for all the info 440 I'll give it a try, sounds like a great all-around setup!!!

I was just wondering where I could find the polaris H weight that is 49.5 grams...the only weight that I could find in 49.5 grams was the 10M5 or are these the same thing. any help much appreciated

I always got my clutch parts at Chopper City Sports in Blaine MN, 763-572-2100. It's owned by Marv Jorgenson who I believe still holds the speed record on snow with his Jaws V-8 sleds. The staff are into different types of racing and real knowledgeable. I had contacted other big name dealers in my area that didn't carry the H weight but would have had to order it from a special race catalog. Chopper City had them in stock. Ask them about a clutch setup for your sled for the trail and see how it compares to what I mentioned. Maybe they can set you up better but that was an excellent setup that worked on many similarly setup sleds.

I'll do some checking with Chopper City and see if it's still available or if it has been changed to a different number code. I just checked my clutch chart and I may have mixed up the weight between the 10M, the H and the 10MB. It's possible the H is a 47.5 but with the weight at the tip it changes the shift profile. Sorry about the hassle but I'll get it straightened out today for you.

Snowman... I just got ahold of Chopper City and spoke with Marv Jorgensen himself. He said the H weight is not made anymore and it was made by Polaris for racers in the 70's. He has several sets in stock of non-bushed H's for $7.95 each. They do not come bushed. He said that they are listed at 50 grams and that you will not be able to find this 50 gram weight in this profile anywhere else anymore. He doesn't think he can get them anymore. The profile is not an odd profile. It is the same profile as current Polaris weights that have more of the weight pushed to the tip. It's just that this profile doesn't come with the weight of 49.5 grams anymore. The 10M5 is 49.5 grams but the profile is somewhere between the profile of a 10MB and the H. The 10MB has more of it's weight near the heel or pin and the the H has more of its weight at the tip. I understand that the 10MB is 47.5 grams but I'm using the profile as an example. The 10M5 is in between that profile with a little less weight at the tip than the H. The H is a great weight for your sled and many other sleds. Don't let the fact that it's not available anymore shy you away from trying it. You will not be dissappointed. Don't run the weights with a different combination of springs or helixes unless you talk to Chopper City about it. The combination I gave you earlier is the one I saw work excellently in several sleds. If you want; call them at Chopper City and get their current color code for the secondary spring they recommend in your application. I think it will still be the lavender color. If you run this clutch setup I recommend painting the primary spring and the secondary spring so nobody else in your group can duplicate it and you will love it. With the H weights you will need to shim the primary by simply getting a shim kit from Chopper City which consists of different thickness washers that you place between the head of the clutch bolt and the outside of the clutch surface. Shim it with the combinations of washers you need to get the engagement where you want it. You can shim it to be silky smooth or to hit hard. I had mine shimmed so it engaged smooth but there wasn't a bog. This works great for dicing in the woods where you don't want a heavy hit upon mashing the throttle in the middle of the turn. TRY IT! You can send me a personal e-mail if you have any other questions or comments.