Act shocks are ok for their intended use. My dad has them on his ZR and they are pretty weak in every aspect when compared to my ryde fx clickers. The shafts are tiny, the bodies are weak, overall just your average trail cruising rebuildable shock that is works fine. If you want a higher performance shock, you would have to look into some ryde fx's, walker evans, or if you want to spend big money, ohlins. I wish i took a picture of the two shocks side by side. My ryde fx clicker makes those act shocks look like it came off of a 120. Im not joking either...
2003 pro-x 700;
TracksUSA 144" tip-up rail extensions
1.25 camoplast predator /120 1.40' extreme max SS studs
VanAmburg tunnel extension
SLP Powder-Pro skis, Powder-Coated suspension
Holtzman tempaflow-420 main jets
10-64g weights w/ round almond spring
24/42 gearing, gutted airbox, PERC, torque arm