BiSaddle Shapeshifter ext

Buy NowLearn More

Customizable Comfort

Every body is different. Off-the-rack bike seats fit just a handful of people. For the rest of us, we’ve had to compromise. Riding an off-the-rack saddle is like wearing shoes that are too small or pants that are too tight.

You can adjust the shape of BiSaddle to custom fit your body and riding style. And, if your riding style or body shape change, you can simply re-adjust for ultimate comfort.

4 Bolts located on the bottom of the saddle allow you to find the perfect width for your unique architecture.


A Perfect Saddle for Everyone

Eliminate pain, numbness, pressure, and injury.  Traditional saddles offer you 1 width and usually, it’s wrong.  Adjust to your preferred width in seconds.

  • Fits Sit Bone widths from 100-165mm
  • Reduce pressure in the nether region
  • Reduce fatigue, discomfort, and pain
  • All components are replaceable
  • Rider further and faster than before
  • Adjustable Width
    • Rear: 130-185mm
    • Front: 40-75mm
  • Weight
    • Cro-Mo 340g +/- 3%
    • Titanium 325g +/- 3%
    • Carbon 275g +/- 3%
  • 243mm Long (UCI compliant)
  • Includes Rounding and Flattening Wedges
  • Includes rear water bottle mount bracket (triathlon)
  • Carbon Torque Max: 6-10Nm
    • Single Bolt Mount: 6-8Nm
    • 2-Bolt Mount: 9-10Nm

The Shape of You

The Shapeshifter not only provides width changes at the nose and rear but it also comes with 2 shape-altering wedges.  Regardless of your individual architecture, the BiSaddle gives you multiple options.

Choose Your Frame

The EXT comes in 3 different materials



Available Now



BiSaddle Titanium Adjustable Bike Saddle


Limited Stock





Pre-Order. Limited Stock.


Pin It on Pinterest

Share This