These are Left and Right Axle Carriers for Larger Bearings from Traxxas. This is a Stock part for: 1/10 Revo 3.3 (5308) 1/10 Revo 3.3 (5309) 1/10 E-Revo EVX2 (5603) 1/10 E-Revo EVX2 (5605) 1/10 Summit (5607) 1/10 E-Revo Mamba (5608) 1/10 Slayer Pro 4x4 (5907) 1/10 Slayer 2wd (5908) This is an Optional part for: 1/10 E-Maxx EVX2 (3903) 1/10 E-Maxx Mamba (3908) 1/10 T-Maxx 3.3 (4909) Features: * Use with Larger 6x13mm Bearings (Traxxas 5180) * Includes Adapters for 6x12mm Bearing * Nylon Construction * Black in Color * Dust Boot Retainers These Traxxas-tough axle carriers utilize larger 6x13mm outer ball bearings that can handle 56% more static load and stress when compared to the stock 6x12mm ball bearings. The durable, large rubber-sealed ball bearings are designed to handle hours of nitro off-road racing. The steel pivot ball retainers keep the pivot balls in place even after the most brutal crash. The new axle carrier design provides all the benefits of after-market aluminum carriers without the penalty in weight and cost.

Verify that this item is appropriate for your vehicle.  Consult your manual or vehicle manufacturer. Verify vehicle fit-ment before purchase.