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This listing describes a Wilwood ST Aero4 caliper with 1.75/1.50 piston sizing intended for use with a 1.25" rotor. The overview emphasizes the caliper’s dimensional pairing to aid shoppers and installers in confirming correct fitment and piston configuration for their brake assemblies without implying additional unsupported features.
Wilwood ST AERO4 Caliper 1.75/1.50 1.25 Rotor
