StemCAPtain is a locally owned and operated small business that produces innovative accessories for bicycles.  Our flagship product is the StemCAPtain Stem Cap Bike Clock.  It replaces the normal, non-function stem cap of a threadless style headset with an analog clock.  We also offer a thermometer, bottle opener, picture frame and compass, and are busy working on other model variations and products.  Please check out our website, or ask for us at your local bike store.  StemCAPtains are very easy to install.



Replace your bike's stem cap with a brilliantly anodized, CNC machined quartz clock.

Browse Clocks ›


Blazing heat or freezing cold, the thermometer provides a cool look and function.

Browse Thermometers ›


Keep on track with one of our compasses. Easily mounts in place of your normal stem cap.

Browse Compasses ›