4x7x2.5 Revolution Bearing (MR74-RSZ) by Avid Racing Concepts is the standard bearing for the Associated 18T and Losi Mini-T. The Revolution Series bearings are a low friction bearing with several options to help satisfy anyone's desire. What makes this bearing unique is that it has a rubber seal on one side while having a metal shield on the other. Rubber seals are great protectors against dirt but the price is that they offer a little more friction due to the tighter seal. Check your manual for the correct size for your vehicle if you are not certain.

• METRIC: 4mm (Inner) x 7mm (Outer) x 2.5mm (Width)
• STANDARD: 0.15748" (Inner) x 0.27559" (Outer) x 0.09843" (Width)