12.11.2004, 09:19 AM
That is the proper gear. The idler isn't something that you MUST have, unless you are hard on your truck. The diffs should be upgraded first, followed by the driveshafts (particularly the rear). After these items, the idler gear is the weak link. I currently have 3 brushless e-maxxes, and 2 of them have the aluminum idler gear. It has been over a year since I have replaced the stock idler in the third truck. I mostly race, though, and my trucks are pretty light (compared to some trucks out there!). If you want a bulletproof truck, then I highly recommend the idler gear, along with a list of other upgrades. I've also seen people run brushless power on a stock truck for quite some time without upgrading (myself included). A lot depends on the driver and terrain and weight of the truck.