Installation of Yellow Box Speedometer Recalibrator The Yellow Box (YB) speedometer correction recalibrator corrects for built-in manufacturer speedometer error as well as the additional error caused by the installation of smaller or larger sprockets. Built-in ...
Speedometer Calibration Gear Box - Corrects your Speedometer! - IH Parts America
Speedometer correction! - Pelican Parts Forums
Speedo calibration calculator mph / kph — Vitesse Global LTD