I have a completly stock z400 apart from Turf Tamers and a ''pro design'' pro flow air filter with a full Scorpion exhaust system.
1. I have been given a size 170 jet. is this the correct one and what are other people running in this circumstance?
2. What, if im going to be using the quad to race, should be th next mod i do to it??
3. has anyone heard of the make ''Scorpion'' and are they as good as other compitition makes???

 

never heard of scorpian, the best ones are CT, yoshi, alba, HMF, procircuit, sparks, and a few others, i would get new rims/tires, like holeshots, and mabey a cam for the motor(hotcam)-or fst. if you are really serious get some lagears widend a-arms, and elka shocks or something equivelent, next get a durablue adjustable axel, these are only some of the things, there is soo much more.