RC Cars Spare Parts Differential Gear with Metal Diff. Outdrive Cups Apply for HBX 12813-12891-12815

This is a great product... for the EC model it goes to. It doesn't fit the 12891 or 12815. I measured from the outer edge of the left bearing to the outer edge of the right and it came to 1.026". The original set, and the space in the rear of tge frame where these fit, are 0.966". 0.060" off... the bearings appear to be wider.

This is a great buy. Thay work great in both of my truck's 1/12 (Suvivor MT) and (Dune Thunder ) James.

Good job

Ordered one and was perfect just what we were looking for ordered a second one and it is missing one of the bearings very disappointed....

Pretty solid

Missing 1 bearing