4" RACING TRUE-DUALS ST18-up Ch/Ch

FEATURES & BENEFITS
•The worlds only 5-step Softail performance exhaust system
•Triple stepped headers for anti-reversion, full range torque and optimal horsepower
•Race versions have 2 1/2" to 3" double stepped performance baffles with drag strip rumble or optional quiet baffles
•4" muffler with 2 1/2" O.D. full-length, 1-piece 220º heavy duty, 16 gauge heat shields
•O2 ports & plugs provided for early models
•Complete with mounting hardware and brackets
•All 2021 and later European models (Euro 5) require eliminators ZPN 744444 for the rear O2 sensor and digital tuning with Diag4Bike or similar to disable related CEL (Check Engine Light) and DTC's (Digital Trouble Code)