Hi there AK, you can buy parts direct from MRC, they sell direct ph# (732) 225-2100 fax# (732) 225-0091. every TK kit comes with a price/parts manual that you should use when ordering parts over the phone (its always important to have part number ready). If you do not have the part/price list I can email it to you.

It sounds like you need (starter gear pack #9632100 $6.60), comes in packs of two with bushings, (Brake gear pack #9632099 $6.60), comes in pack of two. these two gears are concidered wear gears so they do wear over time and will wear faster if not setup correctly. The only other gear for starting the truck is (engine spur gear #9632103 $3.30ea). In front of it is the metal clutch bell.

This truck is very durable and parts to keep it running are cheap. I order parts from MRC all the time (so far with NO problems and I have gottin parts shipments in less than a week) for me and other people in our club www.nitroextreme.com So I have parts too. We are the best place on the net to get info for this kit and we can help you if you need it.

MRC is not assembling any more kits at this time but that does not mean the tuck is junk, the TK kit has been around for over 13 years so there are lots out there so its had a good run. MRC or other enthusiests (like us) may do something with this kit in the future, MRC has also told me they have had other companys interested to buy the product line. Time will tell.

Product review http://www.eastcoastattractions.com/...cnitroking.htm

MRC info http://www.modelrec.com/catalog/item28.html

Madmax info/vids http://www.madmaxx.de/monstertrucks/.../nitroking.htm