Yeah, the Revo shafts are about 4.75-5" long from pin to pin like in your picture (hard to measure them on the truck). However, you can remove the blue boot, pull the slider out and simply cut about 2" from the outside tube. Then put the slider back in (might have to cut that too). Would definitely be a relatively cheap fix. You can get a set of four from
ebay for $20-$25 + shipping.