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Fits CRF/XR50, CRF/XR70, CRF/XR80, CRF/XR100 to eliminate the 9800 rpm rev limiter and provides a hotter advance curve.
• Eliminates the 9800 rpm rev-limiter of the OEM ignition• Direct replacement for the OEM CDI ignition box
the bbr rev-box definatley helps in the upper gears due to the fact that u can rev-the bike higher but ...