This is the Hop Up Spiral Diff Bevel Gear set for Axial AX10

3D Machined Differential Cover (Titanum Gray) for R1 Axle

and 5mm axles

CNC hardened steel and aluminum construction A deep spiral angle spiral bevel gear is a gear with helical teeth formed along spiral lines on the gear face

Increases shock tower stiffness

Team Associated - Factory Team Pillow Balls (Pair), Aluminum, for RC8B3 and RC8B3e ASC70023C This is the Hop UpThe #81068 aluminum pillow balls are a direct replacement for the standard steel versions (#81067) supplied with the RC8B3 and RC8B3e kits. Aluminum pillow balls reduce un sprung mass in the front steering block assembly, resulting in a more aggressive steering feel. Perfect for smooth track conditions with high grip levels.