They are threaded adjustable shocks so you can adjust them to your preforance. I had mine set a bit to stiff and broke my shocktower after I hit a curb. (Left side in pic) Nothing happend to the shocks though. shocks $20.00. Shock tower $1.00. I think the aluminum shocks are definitely worth getting. The K&N air filter I got off Ebay. I originaly bought it for my T-maxx but like the way it looked better on the Smartech. Does any one know if the O.S. Max .18CV-R would be a direct fit for the Winner?