Prologo Scratch-M5 Nack 140mm Saddle Hard Black

The Prologo Scratch-M5 earned its place in cycling history as the saddle of choice during the 2020 Tour de France victory. Engineered to excel across diverse riding demands—whether tackling steep ascents, explosive sprints, or grueling distance efforts—this saddle delivered the performance foundation needed for dominating climbs, securing the young rider classification, and claiming overall victory. Built for serious cyclists who demand proven, race-tested equipment.

The Scratch M5 represents Prologo's latest advancement in saddle technology, combining refined ergonomics with versatile design principles. Originally proven in elite competition across climbing, sprinting, and endurance efforts, this saddle adapts seamlessly to road cycling, gravel adventures, and triathlon disciplines. The M5 platform incorporates contemporary engineering focused on comfort and performance across varied riding styles and intensities.

The Scratch M5 features a T-shaped design engineered for both male and female cyclists. At 250 x 140mm, the lightweight Nack version weighs just 155g, making it ideal for performance-focused builds. The innovative MSS (Multi Sector System)—developed with Politecnico di Milano—employs five independently mapped foam zones that respond dynamically to pedaling mechanics during both power and recovery phases. The saddle's rounded profile promotes natural pelvic rotation while distributing pressure across a broader contact area, enhancing lumbar support and stability throughout extended rides.

The Scratch M5 employs an open-base architecture that effectively reduces pressure concentration in sensitive perineal zones without requiring a traditional channel design. The reinforced nose profile provides enhanced protection against harsh weather exposure—particularly valuable during wet conditions or off-road riding where mud and moisture are factors. This thoughtful engineering balances comfort with durability across demanding environments.

KEY FEATURES

• RAIL NACK 7x9,3mm
• DIMENSIONS 250x140mm
• WEIGHT 155gr
• COLOR Hard Black
• ROUND
• UNISEX