I have heard that changing the primary spring has been somthing people have thought was the best and cheapest thing to do. But what color is right for me? I have a set of more aggressive and heavier tires, titan 589's. Allready a K&N, and a Pipe.... I can not wheelie as it is now with winch in front, but would like to be able to and still not have to worry about flipping quad backwards when gunning it. So please let me know what the difference is and your expeirence with them, also, how much are they, would a dealer have them in stock?

 

I tried both, and on my Xplorer, the green spring seemed a little aggressive, so I went with the white. Both increase engagement force, the green some, and the white more. I would have to say that with larger tires, and a winch, I wouldn't be affraid to go with the green.
It is simple to change the springs, also.
Take out the 4 bolts on the bottom of the floorboard. Then remove the bolts holding on the belt cover, and the zip-tie holding on the rubber boot (on the top) be sure to get the hard-to-see bolts on the bottom of the cover. On my machine, there was also a little spring clip on the rear of the cover, about halfway up. Now take the cover off. Removing the bolts from the floorboard should allow you to swivel the fenders out of the way enough to get the belt cover off. Now look on the front pulley. remove the 6 bolts around the outside of it, and the one in the center. The outer cover should come right off (nothing is going to fly out under spring tension) exposing the spring. Put the new spring where the old was, and replace the pulley cover. Start the engine in Neutral (don't get wound up in anything) and rev the engine up some, watching to be sure the belt climbs up the front & down the rear smoothly. If all looks well, replace the cover, bolt down the footrest, and take a test drive.

 

i would say becarefull of what you do, i have had my GREEN spring in for 20 mins, i will putting the stoch one back in tomorrow. it was way to aggressive. the clutch did not engauge until about half throttle. my top speed was about 35 mph in high, and about 10 mph in low, with the throttle pinned all the way open!

 

Spring colors mean nothing manufacturer to manufacturer . I know , it is confusing .

 

You are saying you would like to increase performance by adding a heavier spring in the drive pully? Well their are two ways to creating the same effect(higher engagment RPM). One way is to increace the spring tension in the drive pully. The second way is to decrease the weights in the drive pully. Either way you are going to create the same effect. For all bikes Polaris has a weight they list for high altitudes. This weight is usually a little bit lighter. About 3 or 4 grams. If this isn't light enough for you than you can basically pick any weight you want. They will all work in any of the clutches. The price on these vary. If it is a stock weight in another bike then it may be as much as $15 a piece(their are three in your clutch), if its not a stock weight it could be as little as $4 a piece.
I plan on going from a 48gram to a 50.5gram in my modified 300 Express. I am going to pick them up today. They will run me about $15 for all three.
I would also like to add that you could even increase the secondary spring tension. This will give your bike a little bit of a slower shift but will keep your engine driving harder through your shifting range. This mod wouldn't cost you a thing, just a little bit of your time.