RC8B4.1 FT Rear Hubs, Blue Aluminum Carbon Fiber Option Parts Other combinations as grip increases:

Other combinations as grip increases:  10/6

It contains the best of the best parts from the Schelle Pro-Built Diffs

this is the rebuild kit to get

Each package contains 14 pcs 3/32" Tungsten Carbide High Precision Balls and 1 Ceramic Caged Thrust Bearing inside of a mini snap container

RC8B4.1 FT Rear Hubs, Blue Aluminum Carbon Fiber Option Parts Other combinations as grip increases:Part Number: ASC81656 Factory Team version hubs with axle height adjustment inserts Blue aluminum Molded tree includes 8x16 bearing inserts, axle inserts for 0 2. 2 4. 5 mm axle height 15x21 bearings not used Fits: RC8B4. 1, RC8B4. 1e, RC8T4 and T4e. Not included: hub towers and hardware (re uses kit parts, AE #81649)