that's funny, b/c I emailed associated about the axle sizes, and they told me that the one w/ the reb body, rtr plus #7091 had 3/16 axles, and that the older versions of the rc10gt had 1/4 axles....

Here is the e-mail: The GT kit and RTR use the stealth transmission. As for the
axles you most like have 3/16th, the early 7090 GT RTR had the
1/4 axles...

Thank you,
Team Associated
Customer Support