Has anyone tried the LRD adjustable pipe for the scrambler 400. They claim a 12 horsepower which is the highest i've seen.

 

What kinda mods do you have. I have a spare HPD cylinder (was a harescramble backup) with a race port and drilled for the girdle. It's .040 overbore and for sale. Thinking around $450 or so shipping included. Put this on with the new HPD Race pipe, and you'll be seeing your doc to get your elbow tendons shortened after they get stretched!!!

KT
Light the fire and pull the trigger!!

 

My quad is stock so far i've only had it for two weeks.

That sounds like a good deal but i'm gonna try just a pipe, clutchkit,filter first and then see if I need more power.