In comparison the HD servos are similar in size to the Futaba S3107 or S3114(slightly wider by 2mm)

Wheelie Bar Green Maxx

Traxxas 7831R - HD Suspension arm

Traxxas 6347 BEARINGS

(20-tooth)/ 5x8x0

Traxxas 7831R Suspension Arm Lower Left F/R HD Red X-Maxx, Funco (Rear) huina In comparison the HD servosTraxxas 7831R HD Suspension arm Red, lower (left, front or rear), heavy duty (1) Designed for the Extreme New heavy duty X Maxx suspension arms use our toughest composite material. Whether youre sending it at the skate park, or launching from a ramp, these arms are built with just the right amount of flex to resist breakage. These popular accessories stand up to the most punishing drivers and even cold weather. Six colors available! Black, Blue, Red,