I put a hot seat adjustable pipe on my 2003 trailblazer 400, and i cannot figure a good clutching setup for higher elevations. My riding is usually above 4000 feet. does anyone have any suggestions on the springs and weights for a good trail configuration. I would like all around performance, with may a little more on bottom and mid, but don't want to hurt the stock top end. I still have to race my friend and at least tie him on top end.

 

hpd 42-36 helix with violet secondary,red-yellow primary with 10-56
stock gearing or put a 34 in the rear.

 

you might not over rev that pipe anymore than 6750-6800 rpm tough,,beleive me,i've ran across 3 hot seat pipes in the past.

 

or try this,gold hpd primary with s-55 weights and 42-36 helix.