Heavy Duty RR Torsion Arm, Straight, 7/8" x 11-1/2", X6 & X7Hyper Racing # 40 1725HD This is the heavy duty 3 4" thick version of the 40 1725 torsion arm. Redesigned in 2017. The X4, X6, & X7 Hyper rear torsion arms are now designed with two shock mounting holes. The idea for the new hole, which is closer to the shackle mounting hole, was conceived when the R&D was being performed for the X7 chassis. More shock control was needed to control the rear axle when in the forward position (short wheelbase). In lieu

1/2" right and left hand taps: 7/8" O

Hyper Racing # 40-011

Read Mike Dicely's enlightening article

Hyper Racing # 40-187

The effect of slotted discs is a harder hitting engagement

Top left to right posts: 20-1/2"

Pilot shaft accurately locates on the opposite side

Hyper Racing # 12-153

Hyper Racing # 37-120

4 valving on rebound and 2 compression (tie down)

Note: To use this nut

Hyper Racing’s 1-3/4” Front Axles are constructed from the highest possible quality