Port City Racing ULTRA dual bearing upper control arm
12-1/4" Threaded upper double steel O degree
Steel cross shaft, straight ball joint plate
Straight screw-in ball joint
Dual sealed bearings for "0" bind and low maintenance
Sealed bearing design never needs grease
Easily removable cross shaft for replacement or mounting of A-frame behind A-arm towers
Can use Howe or Close racing supply caster slug kit, sold separately

**Common on NEW Rocket Chassis XR1.2 and XR2  LF 12 1/4" slotted upper a-arm.**