The year was 2003. Yoshimura Race Engineer Ammar Bazzaz had just helped Mat Mladin claim his 3rd AMA Superbike Championship. After developing and tuning for six years with the team, Bazzaz began to create a product line that would allow racers and motorcycle enthusiasts everywhere to harness his top-level race technology. The Smartest Performance Tuning Technology.
Threaded port that welds-on to exhaust pipe for oxygen sensor.
Designed for use with the Bazzaz Z-AFM Air Fuel Mapper (Self Mapping Kit).
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A: No, this is for an oxygen senor if your bike had one or for the self mapping kit for the Bazzaz fuel control unit if your exhaust did not have the bung on it already. The EXUP valve is completely different.