SB20 - Shifter Failure

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The SB20 has primary shifter buttons integrated into the brake levers.  It also has a set of remote buttons (a.k.a., sprint buttons) under the handlebar tape.

When the shifters fail, you miss gear shifts or get multiple shifts. It can be frustrating.


Startup Failure

Shifters can also prevent the SB20 from starting up.  If any button is stuck down, it can stop the bike from initializing. 

If your bike will not start, you can find bad shifter switches by disconnecting the plugs on both sides of the handlebar clamp.

Try to restart the bike. If it now starts and connects to Zwift/Stages Cycling app, you have found a bad bank (side) of switches. You can insert the plugs one at a time to isolate the malfunctioning bank of buttons.

Fixing Bad Buttons

1. You buy new ones at: SB20 Replacement Parts

2. You can fix your shifter buttons. See SB20 Fixing Broken Shifters.

See Also

  





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