Sillín ISM PN 4.0
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Questions about this product?
Sillín ISM PN 4.0 Info
The ISM PN 4.0 Saddle is designed for triathletes and time trial riders who demand comfort and performance in an aggressive, aerodynamic position. Part of ISM’s Performance Narrow series, the PN 4.0 combines a streamlined profile with ISM’s proven split-nose design to eliminate soft tissue pressure and improve blood flow.
With a 125 mm width, the PN 4.0 allows maximum thigh clearance for efficient pedaling and unrestricted movement. The generous length and supportive padding provide stability over long rides, making it ideal for triathlon training, racing, or extended time trials.
Specs at a Glance
- Category: Performance Narrow (PN) series
- Width: 125 mm
- Length: 255 mm
- Rails: Stainless steel or optional carbon
- Padding: 40-series foam and gel
- Intended Use: Triathlon, time trial, and aggressive aero riding
Design Benefits
- Pressure relief: Split-nose design removes pressure from soft tissue areas for improved comfort.
- Thigh clearance: Narrow profile allows a full, unrestricted pedal stroke.
- Endurance comfort: Supportive padding keeps you stable and comfortable on long rides.
- Aero optimization: Designed for riders spending extended time in aggressive aerodynamic positions.
Final Take
The ISM PN 4.0 Saddle blends comfort, aerodynamics, and pressure-relief technology into a triathlon-ready design. Whether racing or training, it helps athletes maintain efficiency and comfort in their most aggressive riding positions.