The HS-425BB is offered with dual ball bearings

Black chrome plating finish 3D image can be show on both side 1/10 scale trucks and crawlers

Hitec/JR Heavy Duty 6" Y Extension

Two Aluminum c-hub carriers

Hot Racing - Locked Diff Hub Spool for Traxxas Slash, Rustler, Stampede Upgrade Parts Electric Motors & ESC’s The HS-425BB is offered withThis is the optional differential spool for the Traxxas Slash, Rustler, or Stampede truck. This is located in the gearbox and eliminates the differential. This part is recommended for off road use only. FEATURES: stainless Steel Shaft CNC 6061 aluminum Light weight Gear Hub construction blue in color Hot Racing uses precision center less grinding on these shafts to give you a degree of refinement which no other kind of operation can match and hardness