Have 2 like new with only a few clicks on them. Were taken off a new sled for a custom wheel exchange. These will fit the XP chassis up I believe or the later SC-4 skid. These are the 180mm rear axle idlers with the 20mm axle. Also have the matching 141mm rail idlers also..those are new never installed. Have like new other wheels also like the 165mm and 141mm 135mm some with the 25mm axle as in the older Rev and pre Rev chassis's. Also available a good working recoil from a Formula 583 sled. This was recently overhauled. Also have a couple of Rev Chassis MXZX stock 440 bar risers. Upper idlers for the SC-4 race skid also which are now hard to find and unique to that skid only. New Team and HPV rollers for the secondary clutch, some primary springs and Rev chassis exhaust temp. sensor from a power jet 440 but will work on the SDI sleds as well...call for details....Tom Sr. 807-933-4585.