REVE D RDX STEEL SPOOL CUP (2PCS)(D1-501CS)
An iron cup that can be attached to the D1-500SPM spool cup that is standard equipment on the RDX.
The increased rigidity of the steel spool cup improves the direct feel and kick of the throttle.
Also, if you enjoy driving on asphalt and other road surfaces that put a lot of load on the cup, you can reduce the damage to the cup by replacing it with the genuine plastic cup from the kit.