StemCAPtain Stem Cap Products


StemCAPtains are an accessory for your bike that replaces your stem cap with a clock, thermometer, compass, or picture frame. Simply unscrew your existing current 1in or 1 1/8in threadless headset stem cap, pop in the CAPtain, and it’s Time to Ride!


Average rating: based on 19 reviews.

I expected better


Reviewed By: Fritz on 9/2/16

The mounting is secure and the whole thing sticks up past the stem pretty far, but to my mind the compass is lacking. It's a little sphere floating in a plastic ball, kind of like some car compasses. Unlike a car compass, however, the direction you're headed is on the opposite side of the ball from your seat, rather than facing you. That is, if you're headed north, you see the letter S from where you're sitting. To see the entire compass rose it's best to stand on the pedals and lean over it. I took it off after one ride.



Reviewed By: Doug Kirk on 8/1/16

North was always pointing towards me. Off the bike it was fine. I took off the computer that had the battery as suggested in another review and it didn't make a difference so it seems the problem lies with the steel frame.

Stem compass


Reviewed By: Cris jones on 7/6/16

Good idea but doesn't work if you have any asserory with a battery nearby.

Didn't work


Reviewed By: T.L. on 6/27/16

The compass was easy to install, but once installed only points North. I don't know if the interference was because of the steel frame or the magnet for the computer.



Reviewed By: Gayda Collins on 6/17/16

Since I live in the Desert Southwest and ride in triple-digit temperatures regularly, I really like this. I was a bit intimidated, so hired the bicycle shop to install it. I liked it so much that i bought two (one each for touring bicycles.) The display is clear, and, so far, I haven't had any problems with the product.

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