Weapon-R's 4-2-1 race header for the Scion tC features a long-tube design to maximize high-RPM exhaust flow and a stepped tubing for higher torque. The elimination of the catalytic converter makes the Weapon-R Scion tC race header an excellent addition to any race-ready tC. The Weapon-R 4-2-1 Scion tC race header was designed with extensive research and development as well as precision tuning on the Weapon-R's own dynameter. This parts is intended for offroad use only and is not legal for use on public highways. Part Number: 953-116-104
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