ISM seats are optimally shaped, and different than traditional bike seats. The patented, anatomical design is nose-less and features two independent front arms. This results in superior blood flow, no numbness, and unprecedented comfort and performance. Due to the unique design of this saddle you will to take extra care when fitting to make sure it is in the correct position for you.
Because ISM has eliminated the “nose” area, the saddle must be installed significantly further back than a traditional saddle – between 5 to 8 centimeters further back. If the seat feels too wide at the front, move it further back.
A useful way achieve this is to measure from the nose of the existing saddle to something static at the front of the bike such as the handlebars then set the ISM saddle 5-8cm further back from the existing measurement.
You also want to set your ISM 5mm (1/4 inch) lower than your traditional seat, measured from the top of the seat to the ground, or center of the bottom bracket. Do not rely on markings or numbers printed on the seat post or saddle – these are not consistent between manufacturers, and not all seats are the same thickness from rail-to- top. Only objective measurements with a tape measure will work. The reason for this lower height is that you ride slightly higher on ISM seats, by resting on your pubic rami bones and sit bones, rather than soft tissue areas. Lowering the seat maintains your original body position.
PLEASE NOTE: For both the seat height and setback, these instructions are just a starting point. Due to the wide variety of seats on the market, some people may need to add or subtract from the setback or height. When in doubt, consult a professional bike fit specialist.
Next, set the angle of the saddle. Most riders prefer ISM seats to be set up with the front arms parallel to the ground, or at a very slight downward angle (1 – 2 degrees). There is no right or wrong answer for all people, so feel free to make adjustments after your first few rides.