Beautifull piece of work. It just bolts right in with no issues and is much stronger than the plastic unit that the F109 comes with so caster adjustments are easy accurate and hold their position. Being aluminum keeps the nut from deforming it when tightening it up. Nice annodization adds to the bling factor too.
These babies are highly recommended if you're planning to upgrade the stock castor mounts. With these mounted, you can tighten the front a lot better. Its a direct replacement so just remove the stock ones and dropped these in. Its solid construction provides more stable castor adjustments. Looks nice too! Will fit Tamiya F103s and 3Racing's F109s.
I bought this part for my F103GT.
I use it with the kit front axle. It replaces the upper part and also the plastic spacers. The castor could be selected between -2° and 8° which could be selected based on the laser markings on the part.
The part fits perfectly and enables you to do some additional setup on the front axle.
This castor mount is a direct replacement for the plastic castor mount that comes with the 3 Racing Front Suspension F103RM. (#F103RM-10) Even though the item number and description refers to the GT model, this is a perfect replacement that works with 3 Racing Front Suspension. (adjustable camber)
Perfectly machine solid piece of aluminium upper dog bone mount for the F103 front suspension system.
Highly recommended ... : )