This is the Integy Blue Aluminum Locking Diff Hub Spool for the Traxxas T-Maxx .15, 2.5, 2.5R, 3.3, and E-Maxx trucks.  Installing a spool such as this in the rear of your truck will give it much better traction through slippery areas such as snow or mud, or even just loose sand.  Installing one in the front and the rear will make it ready for extreme off-road situations.  This is a direct bolt-in hop-up part.

FEATURES
Steel shaft with pre-installed bearing and blue colored aluminum hub

INCLUDES
Locking Diff Hub Spool from Team Integy for the Traxxas T-Maxx and E-Maxx

Fits Traxxas T-Maxx .15, 2.5, 2.5R, 3.3 (model 4909 - Does not fit 4908), and E-Maxx (model 3906 - Does not fit 3905)