Mason Macro Seat Clamp 31.8mm £17.50

Seat Clamp Spec

Mason Macro Seat Clamp 31.8mm

Fitted as standard to our bikes and frame sets, the Macro V2 clamp is CNC machined from 6066-T6 Aluminium billet, pocketed for lightness and uses opposing dowels to evenly distribute clamping forces. This lovely, minimal seat clamp is simple, stylish, functional and a perfect fit for our frames. It’s super-light but super-dependable too, we’ve tested it on all sorts of bikes in all sorts of conditions.

Also available are Macro clamps upgraded with the Mason X August Bicycles Integrated Light Mount which is made for us in the UK. This machined insert swaps out with the standard threaded dowel to form a fully integrated and discrete mounting point for Supernova E3 Tail Lights. This part comes as standard with our Luminance lighting upgrades.


  • CNC machined, 6066-T6 alloy.
  • To fit 31.8mm seat tube.
  • An amazing 18g of minimal loveliness.
  • Stainless screw.
  • SatinBlack anodised with laser-etched Mason logo and TungstenGrey anodised dowels.
  • Also available with Mason X August Bicycles. Integrated Light Mount - £30.50.