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How to measure for the Wheel Skewers
  • Remove your wheel (the image below shows the wheel attached make it clearer)
  • Measure the distance between the outside clamping surfaces of the dropouts
  • Repeat the process for the other wheel; the front is usually narrower than the rear

Click image to enlarge

We stock a range of skewers to fit any bicycle regardless of how wide or narrow your dropouts are.  When adding a Pitlock set to your shopping cart, you will be asked to select from a range of skewer lengths.


How to measure for the Ahead Lock
  • Remove your existing top cap by unscrewing the allen head bolt in the center. 
  • You should see something like in the image below
  • Measure either the inside diameter of the stem (shown in green), or outside diameter of the steerer (shown in red)
How to measure your steerer
Click image to enlarge

You should get a measurement of either 1", 1-1/8" or 1-1/4".  Older bicycles are likely to sport a 1" steerer.  The modern standard size is 1-1/8".  Some newer mountain bikes will have a 1-1/4" steerer.

When adding a Pitlock set that includes the Ahead Lock to your shopping cart, you will be asked to specify the diameter of your steerer and the color (black or silver) of the top cap you would like.