has anyone put a hpd plain primary spring on there 4 wheeler, it says it gives stock atvs high engagement. i was just wondering if it does give good take off or "high engagement". my trailblazer has ok engagment but i want more, id kinda like it to half way try and do a wheelie on the take off. ne one that has a TB knows wat i mean

 

I have one on my wife's 400 and really like it. I sold the one I had on mine to a guy that just got a pipe for his TB and really liked the engagement of it. Not too high, just right.

 

I have the HPD plain on my V and I really like the engagement, I'm going to try the Polaris Yellow that engages a little higher and try the Plain on my Scrambler.