This is our USA made billet aluminum and black oxide coated Caster Spacer required to mount an Upper Control Arm to a Knuckle for RCLT HD setups.
These spacers allows for ±1° of caster adjustment per side.
Sold individually. Four spacers are included with RCLT HD.
See page 36 of the RCLT HD Install Guide for installation instructions, page 41 for our recommended alignment specifications, and page 50 for our “Simple UCA ±1° Caster Adjust Without Removing Tire” steps which are also shown in our instructional YouTube video below.
Caster Adjustment Procedure
Expected Results based on Chosen Caster Setting
| Lift Amount | UCA Setting | Expected Caster Tacoma SUV |
|
|---|---|---|---|
| Less than 3″ | Less Caster Middle Position More Caster |
2.0° to 2.5° 2.5° to 3.0° 3.0° to 3.5° |
3.0° to 3.5° 3.5° to 4.0° 4.0° to 4.5° |
| 3″ to 5″ | Less Caster Middle Position More Caster |
1.5° to 2.0° 2.0° to 2.5° 2.5° to 3.0° |
2.5° to 3.0° 3.0° to 3.5° 3.5° to 4.0° |
| 5″ or greater | Less Caster Middle Position More Caster |
1.0° to 1.5° 1.5° to 2.0° 2.0° to 2.5° |
2.0° to 2.5° 2.5° to 3.0° 3.0° to 3.5° |


















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