The EPI red and the Polaris white appear to be the same exact spring .

Yes Sparks , I was refering to EPI orange. I really like that spring.

I have quite a few 15 -17 year old boys in the neighborhood with a lot of different polaris machines . They have time to try different stuff on their quads from in my shop.(Doesn't bother me they are good kids) The orange EPI spring in a unmodded 4 stroke seems to be the hot ticket for simple low cost improvement.There seems to be a 2mph top speed difference between the Polaris green and EPI orange with the EPI orange having the advantage . Try one in your modded 300 and report back .

 

What would be a good spring for a hpd piped 400 Scrambler with close to the stock RPM clutch engagement. I like the way the stock set up works but just want more power. thanks

 

What is the stock primary and secondary springs and weights on a 2002 Scrambler 500 4x4. Mine is completely stock and I want to engage the belt quicker and upshift quicker. Not concerned with losing any speed, I mainly trail ride and climb hills(low speeds)belt burns up kinda quick.