Prologo Scratch M5 Nack 140 (Black)

The Scratch M5 is an iconic round-shaped, T-shaped multidisciplinary saddle. Thanks to its innovative technologies in terms of dimensions, shape, and ergonomics, it is loved by both professional riders and demanding enthusiasts looking for the perfect balance between comfort and high performance.

Its compact size (250 x 140 mm) and extremely low weight (153 g in the Nack version) make it a unisex saddle, perfect for road cycling as well as gravel and cross-country/marathon mountain biking.

Technical Specifications

Size: 250 x 140 mm
Weight with Nack rail: 153 g
Weight with Tirox rail: 214 g
T-shape and round profile
Multi Sector System to match rider morphology
Active Base System for pressure relief and added comfort
Carbon fiber base
Rail options: Nack: carbon fiber, Kevlar, and aluminum filaments. Tirox: lightweight alloy steel

Prologo Scratch M5 Nack 140 (Black)

SGD 350.00

Kuantiti

Anatomical Shape

The T-shape design provides greater freedom of movement thanks to a wider seating area.
The rear-positioned anatomical center allows the rider to easily change position and take advantage of the full saddle length. The round anatomical shape of the Scratch M5 offers extra lumbar support, helping maintain a stable position even for cyclists with reduced pelvic mobility.

Technologies

The MSS – Multi Sector System, developed in collaboration with the Politecnico di Milano, improves both comfort and performance. Its individually active foam pads create 5 separate zones that work intelligently and independently, supporting the natural pedaling motion in both the push and pull phases.

The innovative Active Base technology features a perforated base covered with light padding, helping eliminate pressure peaks in the pelvic-genital area. Additionally, the closed prostate area ensures better protection of sensitive zones in extreme weather conditions (rain or mud).

Base and Rails

The rail is available in Nack (Nano Carbon Fiber): made of carbon fiber, Kevlar, and aluminum filaments—perfect for riders seeking maximum stiffness and lightness- or in Tirox (light alloy steel): offering excellent vibration absorption and a great weight-to-strength ratio. The base is made from long carbon fiber for the Nack rail, or in injected carbon fiber for the Tirox rail. Materials offering a great balance between stiffness and comfort.

Prologo Scratch M5 Nack 140 (Black)

Features

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