ISM - PN4.1 - Black

• AUTO-RACING INSPIRED - Just like the PN 4.0, this upgraded anatomic relief bicycle saddle features an auto-racing inspired air vent chassis for improved aerodynamics
• OPTIMIZE BLOOD FLOW - Just like all of ISM's saddles, the PN 4.1 features ISM's patented no nose bike saddle expertly engineered to alleviate soft tissue pressure, promoting optimal blood flow while reducing genital numbness for a more comfortable ride
• UNRIVALED PERFORMANCE - Like the PN 3.0 and 4.0, this noseless bicycle seat features an ergonomic tapered front, providing superb thigh and hamstring clearance. We've also included an upgraded 40-Series foam padding, providing an additional layer of bike seat comfort
• RACE ACROSS DIVERSE TERRAINS - The PN 4.1 comfort bike seat builds upon our award-winning PN 3.0 model by adding an extra 5mm at the rear. This broadens the range of pelvic/body positions it can accommodate, making this anatomic bicycle saddle adaptable across various terrains
• SADDLE SPECIFICS - Part of ISM's Performance Narrow series and the enhanced version of the PN 4.0, this noseless bike seat also measures 255mm long and 125mm wide, crafted with upgraded Chromoly rails for enhanced performance and durability

The ISM PN4.1 is the newest offering in the Performance Narrow category of bike saddles. Same shape as the popular PN4.0, only with increased padding for those looking to soften their ride. We engineered the PN4 chassis with sit bone contact points of 125mm to accommodate a range of pelvic/body positions related to road and gravel cycling.

Like the other PN bike seats, the PN4.1 offers 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 saddles, the PN4.1 is nose-less and designed to remove pressure from soft tissue, ensuring maximum blood flow, no genital numbness, and a healthier, more enjoyable ride.


Item Length: 283
Part Type: Saddle
Size: 255 x 125mm
Sport/Activity: ‎Cycling
Type: Saddle

Material: Foam

UK Delivery:

• Free delivery on all orders of £10 or more.
• £1.49 delivery fee on orders below £10.
• UK orders are shipped via Royal Mail 2nd Class.

International Delivery:

• Flat rate delivery charges vary by country.

Dispatch and Delivery Times:

• All orders are shipped from our warehouse in Northampton, UK within 48 hours of receipt during working hours.
• UK mainland orders typically arrive within 3-5 working days via Royal Mail 2nd Class.
• International estimated delivery times:
• Europe & Channel Islands: 7 to 10 working days
• USA: 7 to 15 working days
• Rest of the World: 9 to 21 working days

View our full delivery infomation here.