Prologo Saddle Nago R4 PAS Tirox 147 Hard Black

The Prologo Nago R4 PAS is the evolution of the iconic Nago saddle, redesigned to meet the performance and comfort demands of modern cyclists. Developed with input from pro teams and tested using Prologo’s “Pressure Map MyOwn” system, the Nago R4 is engineered for riders seeking efficiency and long-distance comfort.

Compact in design, the saddle measures 245mm in length and 137mm in width, featuring a T-shape with a slightly forward anatomical centre to promote freedom of movement and efficient power transfer in any riding position. Its semi-round profile suits riders with average pelvic rotation and narrower sit bones.

The PAS (Perineal Area System) central channel reduces pressure and improves blood flow during high-intensity efforts. Dual-density foam padding across two independent support zones delivers consistent comfort through every pedal stroke. The Tirox rail, made from a lightweight alloy steel, strikes a balance between durability, vibration absorption, and comfort—ideal for endurance and performance-oriented riders.

Key Features:

• Dimensions: 245 x 137 mm
• Weight: 191g (Tirox rail)
• Rail: Tirox light-alloy steel for strength and vibration damping
• PAS central channel for pressure relief and comfort
• Compact T-shape for improved pedalling efficiency
• Semi-round ergonomic profile for versatile riding styles