Handlebar Stem Headspace 70mm Ext 31.8 Bar V2

US $89.00

*V2 – Updated Color and Design. 

After further testing and refinement we were able to remove the “lower bridge” of the stem body whilst still ensuring the stem passes all EN testing standards. This opens up the possibility to mount many 3rd party accessories ( GPS mounts, Lights, Camera etc ) within the area between the top clamps … Furthermore this V2 weighs just 148g! 

Retro-inspired, modern functionality.

When we set out to design a stem, we knew the market already had some great options and probably didn’t need another lightweight or round stem to add into the mix.

Looking at some of the great designs from the early days of MTB, we wanted to add some of that styling into a modern version.

Updated now to a 31.8mm bar diameter and available in 1 extension – 70mm – our new HEADSPACE stem offers a new option to the crowded stem market.

Why 70mm? Well, with gravel bike geometry progressing almost daily and most modern 29er trail setups running shorter stems ( less than 90mm at least ) we think this is the sweet-spot.

  • 70mm Extension
  • Zero Degree Rise
  • 31.8mm Bar Diameter
  • Forged Alloy Construction with CNC-Machined Finish
  • 85mm Clamping Width ( ideal for Drop Handlebars and Flat or Low Riser MTB Handlebars )
  • Final Weight : 148g
  • Recommended Torque Settings : 5Nm for Steerer and Clamps

Please see our PRODUCT INFO SHEET for important details about clamping width and handlebar compatibility.

We designed the Top Clamp to be the same width as our Carbon/Alloy Aero Bolt-On and therefore allow for a unique and completely integrated front-end setup. Please see the gallery for some images of how the system looks.

check out Bikepacking.com’s first look HERE.

In stock

SKU: HB572 Category:


  • Diameter : 31.8mm
  • Extension : 70mm
  • Rise : 0mm
  • Stack Height : 40mm
  • Width : 85mm

Info Sheet


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