Prologo NAGO R4 3D PAS Saddle - TIROX 137 Hard Black AM

3D Precision. Adaptive Comfort. All-Round Performance.

The Prologo NAGO R4 PAS 3D MSS represents the next evolution of the iconic NAGO platform, enhanced with advanced 3D printing technology to deliver a saddle that blends lightweight performance with exceptional comfort and versatility. Developed through Prologo’s Pressure Map MyOwn testing and refined for both road and off-road use, it is designed for demanding riders who expect the highest level of support, efficiency, and durability.

Thanks to its multidisciplinary design and balanced construction, the NAGO R4 PAS 3D is equally at home in high-intensity racing, long endurance rides, and performance-driven training sessions.

Anatomical Shape & Riding Freedom

T-Shape, Semi-Round Profile

The NAGO R4 PAS 3D features a T-shaped design with a wider seating area, offering increased freedom of movement while maintaining stable support. Its recessed anatomical center allows the rider to comfortably use the full length of the saddle and easily change position during efforts.

The semi-round profile delivers an ideal balance between support and mobility, making it suitable for a wide range of riding styles and positions.

Advanced 3D Printed Comfort

MSS + PAS Technology

At the core of this saddle is Prologo’s Multi Sector System (MSS), now taken further through 3D printing. The saddle surface is divided into five independent zones per side, each with specific densities and elasticity coefficients that adapt precisely to the rider’s pressure points.

- Rear zones provide stable support for the sit bones and efficient power transfer

- Central zones reduce pressure in sensitive soft-tissue areas

- Front zone offers controlled support during aggressive, forward positions

The integrated PAS (Perineal Area System) open channel runs along the center of the saddle, eliminating pressure peaks, improving blood flow, and reducing numbness on longer or more intense rides.

Balanced Construction with Tirox Rails

The saddle is built on a carbon base for strength and responsiveness, paired with Tirox rails made from a lightweight aerospace-grade steel alloy. This combination delivers an excellent balance between weight, durability, and vibration absorption, offering slightly more compliance than carbon rails while maintaining race-ready performance.

Why Choose the NAGO R4 PAS 3D MSS (Tirox)

- Advanced 3D printed saddle surface with MSS zoning

- PAS open channel for pressure relief and improved circulation

- T-shape and semi-round profile for freedom of movement

- Carbon base with vibration-damping Tirox rails

- Ideal for road and off-road performance riding

Technical Specifications

- Area of Use: Road & Off-Road

- Saddle Dimensions: 245 × 137 mm

- Saddle Shell: Carbon

- Saddle Cover: 3D printed MSS structure

- Rail Material: Tirox (light alloy steel)

- Shape: T-Shape, Semi-Round

- Perineal Relief: PAS channel

- Color: Black

Weight

- Saddle Weight (Tirox Rails): 195 g

- Among the lightest 3D saddles in its category

In the Box

- 1 × Prologo NAGO R4 PAS 3D MSS Saddle – 137 mm (Tirox Rails)

Note: Product images may display the Prologo NAGO R4 3D Saddle – 137 mm with Nack rails. This product listing refers specifically to the Prologo NAGO R4 3D Saddle – 137 mm with Tirox rails.