This is R31 House GRK4 Aluminum Lower Arm 2 pcs Black.
For: R31 House GRK4
Lower arm for front & rear A arm developed for GRK4
Smaller than GRK3 and global genuine lower arm!
A two-piece structure is used to support various damper settings.
By combining with spacers and screws sold separately
You can set a wide range of damper lever ratio and tread width.
The lower arm mount has different front and rear shapes to widen the wheelbase setting range.
R31 House GRK4 Aluminum Lower Arm (2 pcs)