- 5mm wider than the PN3.0 to accommodate a greater range of sit bone widths
- PN4.0 offers superb thigh and hamstring clearance which allows for more rider body movement around the seat and is great for diving into fast corners
- Features ISM 30-series foam padding for a balance of performance and comfort
- The ISM PN4.0 is the newest offering in the Performance Narrow category of saddles
- Tapered-edge mold design for incredible comfort
- Auto-racing inspired air vent chassis
