Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
The rotor and bracket determine whether this red Wilwood TX4R right brake caliper is the correct choice. Its 1.25-inch rotor-width configuration works with the radial mount and 4-piston layout detailed below. Founded by Bill Wood in 1977, Wilwood Engineering is based in Camarillo, California. It designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized applications. Components must be selected to suit the complete brake system. The forged TX4R is a four-piston radial caliper intended for heavy vehicle brake assemblies. This exact 1.25-inch nominal-width unit differs from wider TX4R variants. Match the 10120 pad shape, bracket offset and available wheel space rather than relying on the family application summary.
Technical Details
- Manufacturer part number: 120-16730-RD
- Component: TX4R Forged Radial Mount; one individual caliper
- Placement: Right
- Construction and finish: Forged aluminum; Red Powder Coat
- Mounting interface: Radial; mounting centers 9.63 inches
- Mount height: 3.07 inches
- Hydraulic inlet thread: 1/8-27 NPT
- Pistons: 4; stainless steel; bore dimensions 1.62/1.38 inches
- Hydraulic piston area: 3.56 square inches
- Dust boots: Yes
- Brake pad shape: 10120; shape number does not specify a friction compound
- Nominal rotor width: 1.25 inches
- Rotor width range: 1.17–1.25 inches
- Rotor diameter range: 14.25–16.00 inches
- Caliper weight reference: 13.4 lb
Fitment & Compatibility
Match the 9.63-inch radial attachment to the existing bracket, then check caliper centering over the 1.25-inch nominal-width rotor. Use the right-hand caliper and keep the bleed arrangement in the specified orientation. The 1/8-27 NPT connection must use the correct fitting and seal. Check the full wheel envelope with the actual bracket and rotor installed.
Wilwood caliper specifications
Contact PMB Performance for a component comparison using the actual caliper, bracket and rotor measurements. Our team has over 20 years of experience with parts and fitment details.
