When upgrading to rear disc brakes orlarger front brakes, a proportioning valve is usually required. Style: Knob.
New Aluminum Knob Adjustable Disk Brake Proportioning Valve Universal Type
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Universal Aluminum Knob Adjustable Disk Brake Proportioning Valve 100-1200PSI
Wilwood Adjustable Disk Brake Proportioning Valve 260-8419 Aluminum/Steel Knob
For Wilwood 260-8419 Adjustable Disk Brake Proportioning Valve Knob
Wilwood 260-11179 Aluminum/Steel Knob Adjustable Combination Proportioning Valve