Rally Innovations Light Bar Subaru WRX / STI 2015-2021 (SU-VAA-RLB-01) Vehicle Model_Mazdaspeed Mazda3 There was a rear caliper

There was a rear caliper design change mid production year

and it's not super expensive for what you're getting

5 psi) high-performance pressure sensor remains in the engine compartment

Short means less header volume and quick spool up

Key Points Every set is flow-balanced at 5 different pulse widths

Rally Innovations Light Bar Subaru WRX / STI 2015-2021 (SU-VAA-RLB-01) Vehicle Model_Mazdaspeed Mazda3 There was a rear caliperRLI SU VAA RLB 01 Mount up to (4) lights to enhance visibility Fits most driving lights up to 6. 5" dia., 0. 5" depth (sold separately) Built specifically for this car model Complements contour of OEM bumper Textured Black Powder coated finish to protect from rust Simple bolt on installation Material: 1. 25" x 0. 06" Mild Steel Tubing