This is R31 House GRK Series Premium Upper Arm Set Black.
For: R31 House GRK Series
The aluminum upper arm body adopts a new shape
The smoothness of operation and the increased support rigidity have been achieved.
Uses a D-cut type upper arm shaft.
By fixing with a set screw
Ease of camber adjustment and increased rigidity have been achieved.
PM upper arm body (2 pcs)
PM upper arm shaft 29.5 mm (2 pcs)
M3 x 4 mm set screw (2 pcs)
Upper arm spacer 5 mm (2 pcs)