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Bontrager Rhythm Comp Knock Block Stem

£27.49 Model 14101
A reliable 31.8 mm aluminium MTB stem available in multiple lengths to fit your bike.
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31.8 mm of durable control

Run your favourite 31.8 mm clamping diameter handlebar on a bike with Knock Block with the Rhythm Comp 31.8. It adds Knock Block compatibility to a durable stem with multiple lengths to let you fine-tune the fit to your ride.

Product details

  1. Get 31.8mm handlebar compatibility with your Knock Block system
  2. Also compatible with standard headsets and spacers
  3. Knock Block system protects frame from impacts by fork and handlebars by eliminating over-rotation of bars
  4. Available in a wide range of sizes for today's mountain rider
  5. See Service Parts for other Knock Block parts

More options


Size 0 deg. x 50mm 0 deg. x 60mm 0 deg. x 80mm
Rise 0 deg. 0 deg. 0 deg.
Length 50 mm 60mm 80 mm
Steerer outer diameter 28.6 mm (1-1/8") 28.6 mm (1-1/8") 28.6 mm (1-1/8")
Clamp 31.8 mm 31.8 mm 31.8 mm
Type Knock block Knock block Knock block
Material Aluminium Aluminium Aluminium

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