Further Details

Title: ISM - PN4.0 - Black
Condition: New
Size: 255 x 125mm
Color: Black
Material: Foam
Brand: ISM
Description: NEW for 2020! The ISM PN4.0 is the newest offering in the Performance Narrow category of bike saddles. Similar in design to the award-winning ISM PN3.0, we increased the sit bone contact points 5mm to accommodate a range of pelvic/body positions. Rider response told us some cyclists wanted a 125mm saddle to allow for more relaxed pelvis tilt related to road and gravel cycling.

Like the other PN saddles, the PN4.0 offerings superb thigh and hamstring clearance. This allows for more rider body movement around the seat and is great for diving into fast corners.

Like all ISM bike seats, the PN4.0 is nose-less and designed to remove pressure from soft tissue, ensuring maximum blood flow, no genital numbness, and a healthier, more enjoyable ride.


Type: Saddle
Part Type: Saddle
MPN: M-SA-PN4.0-K
Number of Items: ‎1
Sport/Activity: ‎Cycling

  • RACE ACROSS MULTIPLE TERRAINS - By adding 5mm to the rear of our popular PN 3.0 comfort bike seat model, the PN 4.0 profile accommodates a much wider array of pelvic/body positions, making this anatomic bicycle saddle incredibly versatile
  • UNRIVALED PERFORMANCE - Like the PN 3.0, this noseless bicycle seat features an ergonomic tapered front providing superb thigh and hamstring clearance. We've also included our 30-Series foam padding, providing an additional layer of comfort
  • OPTIMIZE BLOOD FLOW - ISM's revolutionary and patented bike seat noseless profile featured on our PN 4.0 road bicycle seat was expertly engineered to alleviate soft tissue pressure, promoting optimal blood flow while reducing genital numbness for a more comfortable ride
  • AUTO-RACING INSPIRED - The PN 4.0 anatomic relief bicycle saddle features an auto-racing inspired air vent chassis for improved aerodynamics
  • SADDLE SPECS - Part of ISM's Performance Narrow line, this no nose bike saddle measures 255mm long and 125mm wide and is crafted with our durable and proprietary Stainless Steel alloy rails

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