The X12 Ballstud Kingpins, the brainchild of Jason Cheng, are made out of titanium and allow for new style front end setup on your Xray 12th scale. This conversion comes with (2) 0.5mm / (2) 1.0mm roll center shims and (2) e-clips but you will need to tap your steering block to handle the M4 thread and purchase (2) Xray 4.2mm ball cups (372662).
Install Tips and Instructions
Avid X12 Kingpin Instructions
Drill and then tap your steering block to an M4 thread (https://www.amainhobbies.com/dubro-tap-drill-sets-4mm-dub373/p14189)
You will need (2) Xray 4.2mm ball cups (https://www.amainhobbies.com/xray-4.2mm-composite-balljoint-4-xra372662/p393977)
- Machined from billet 6Al-4V Titanium.
- Broached with a 2mm Allen head.
- Includes: (2) Titanium Ballstud Kingpins, (2) 0.5mm and (2) 1.0mm camber shims, and (2) e-clips.
- Fits: All Xray X12’s.