These are the Titanium Hop-Up 2339X Turnbuckles from Traxxas!
This is a set of 105mm rear titanium turnbuckles for the Traxxas T-Maxx 2.5. These turnbuckles link the rear bulkheads to the axle carriers and provide toe-in adjustment for the rear wheels. Upgrade for the stock steel turnbuckles. Constructed of titanium for lighter weight and long life, Flattened area in center of turnbuckle allows easy adjustment with small wrench (included) or pliers.
Two (2) 105mm Rear Titanium Turnbuckles
One (1) adjustment wrench
Attaching to rear bulkheads (4929) and axle carriers (4932) and adjusting toe-in, using ball ends from stock rear turnbuckles (2339).