ISM PN4.Zero saddle triathlon
ISM PN4.Zero saddle triathlon
ISM PN4.Zero saddle triathlon
ISM PN4.Zero saddle triathlon
ISM PN4.Zero saddle triathlon
ISM PN4.Zero saddle triathlon
ISM PN4.Zero saddle triathlon
ISM PN4.Zero saddle triathlon
  • -10%

ISM PN4.0 Saddle triathlon road


The ISM PN4.0 is based on the PN3.0. Experiences showed that some riders needs a 5 mm wider saddle to support the sitbones during the ride on roadbike or gravelbike.

Comfort like you've never experienced before. Invest in your health!

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Product Info

The ISM PN4.0

Just like the other ISM bike saddles does this bike saddle help you lose your saddle pain!

The PN4.Zero, alltough based on the models like the other saddles in the PN-serie, is very different like the other PN saddles. The PN4.Zero is different from the other PN saddles trough his shape and sizes. This saddle has a slightly different shaped edge, a different shaped support. 

ISM comfort wich you've never experienced before

The PN4.Zero is the first saddle of this new generation wich will give you those two things. The ISM PN4.Zero has a stuffing of the 30-series. Ideal because at a Triathlon you mostly use a thin layer of shammy.

The nose of the ISM PN4.Zero points a bit down, which will let the driver allow to tillt the hip around limitless. The famous ISM notch already did that of course. Because of this design there is no pressure on the noble parts.

So: The ISM PN4.Zero guarentees a enjoyable and comfortable bike ride.


  • Category: Race-small
  • Length: 255 mm
  • Width: 125 mm
  • Padding: Foam and Gel
  • Rails: Stainless Steel
  • Colour: Black
  • UCI Compliant: Yes

Racebike saddles ISM

All the ISM racebike saddles are superdifferent from the other brand  bike saddles, because of this reason: 

- These are saddles where you really sit on top. The ISM racebike saddles are flat on the top, the most other bike saddles for your race bike have a noddle. Because of that you have to adjust your saddle in a different way:

- The uppersite of the seat 1 centimeter lower than normal! This is because you have a noseless saddle. The length is to satisfy the rules of the UCI.

For a racebike saddle the ISM seat is a top recommendation for athletes! At the triathlon worldchampionships in Kona  ISM has been NR. 1 for a couple of years, with a huge difference from the 2nd place!

Take your time to adjust this seat!

Because you are going to be seated on your seat bones the right adjustment is slightly more difficult to find than with a traditional bike seat. Read the instruction that comes with the ISM seat end watch the vids about adjustment. 

When you have found the right position you will never want to change your bike saddle ever again!