Arrma Outcast & Kraton 4s BLX


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Complete Arrma Kraton & Outcast 4s BLX bearing kit with bellcrank bearings.


Stainless option is NOT a COMPLETE kit, we do not have the 10x15x4 Flange in stainless at this time

 This kit is compatible with the following Arrma vehicles:

  • Kraton 4s BLX
  • Outcast 4s BLX

26 bearings included

  • 8- 12x18x4
  • 6- 10x15x4
  • 4- 8x16x5
  • 4- 5x10x4
  • 2- 5x8x2.5
  • 1- 10x15x4 Flange
  • 1- 15x21x5 


Motor bearings are for the stock 3668 2400kv motor and include:

  • 2- 5x13x4 metal shield abec 5 chrome steel
  • * if you want stainless or ceramic bearings, please see the blx120 listing


Chrome Steel

This is our standard bearing that we have been stocking since the beginning. Chrome Steel is a great budget friendly bearing that will work in most any application.

  • Abec 3
  • Pre Greased
  • Chrome steel
  • Rubber sealed


440 Stainless Steel   * 10x15 Flange will NOT be stainless

Stainless Steel bearings offer 75-85% of the strength as the Chrome Steel bearing, but will not corrode when used in wet applications. Stainless Steel also will run safely at a higher temperature than a chrome steel

  • Abec 3
  • Pre Greased
  • 440 Stainless Steel balls retainers & races
  • Rubber sealed


Ceramic Hybrid 

Ceramic Hybrids last up to 10xs longer than Chrome Steel bearings.  These are used in applications where high speed, load and temperature are a factor. Ceramic balls are harder and rounder than stainless & chrome steel, so therefore they offer less rolling resistance. 

  • Abec 5
  • Light oil
  • Ceramic Silicon Nitride Si3N4 balls
  • Chrome steel races
  • Chrome steel & reinforced nylon retainers
  • Rubber sealed


Reinforced nylon retainers

Reinforced Nylon retainers can handle up to 60% more speed than a chrome steel retainer. Nylon retainers will lose their elasticity and become brittle in colder temperatures.

*main picture is a stock photo

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