Prologo Scratch NDR 140 Nack MTB Saddle for Cross Country & Marathon Racing

The Prologo Scratch NDR 140 Nack Saddle represents the pinnacle of off-road saddle technology, born from close collaboration with professional MTB teams. Designed specifically for demanding Cross Country (XC) and Marathon racing, this saddle combines racing DNA with innovative features to help riders perform at their best in the toughest conditions.

Measuring 250mm by 140mm, the Scratch NDR incorporates the Multi Sector System technology, which divides the saddle into zones tailored for optimal performance during climbs and long rides. The rear lateral sections provide enhanced stability and comfort when pedaling in a seated position, thanks to 3mm thicker variable density EVA foam padding and a smooth cover that facilitates quick movement out of the saddle. Meanwhile, the central-front section features a large flat surface with a horizontal textured Grip Cover, offering exceptional grip and support for steep and technical ascents where riders pedal from the tip of the saddle.

This saddle’s anatomical shape has been carefully redesigned for off-road disciplines by shifting the anatomical center back by 5mm, granting greater freedom of movement and improving pedaling efficiency on long-distance rides. The closed design excludes a central exhaust channel, creating a flatter and more comfortable surface for pedaling near the tip, while also protecting against dirt and mud from the rear wheel. The lightweight long-fibre carbon base incorporates the Active Base System—a pressure relief hole under the padding—that enhances comfort during intense rides.

For the performance-driven cyclist seeking maximum rigidity combined with ultralight construction, the Scratch NDR comes equipped with Nack rails made of a composite of carbon fibre, Kevlar, and aluminum filaments, weighing only 166 grams. This saddle expertly balances comfort, durability, and weight, making it an essential component for competitive off-road riders.

What It’s Good For

• Providing exceptional comfort and support on long Cross Country and Marathon rides
• Enhancing climbing efficiency through a design optimized for seated pedaling and technical ascents
• Offering superior grip and stability thanks to the specialized Grip Cover and Multi Sector System technology
• Reducing pressure and fatigue with the Active Base System’s innovative hole for pressure relief
• Delivering lightweight performance with the carbon fibre, Kevlar, and aluminum composite Nack rails
• Protecting against mud and dirt intrusion due to the closed saddle design without a central exhaust channel

What It’s NOT Good For

• Casual or recreational cycling where high-performance features are unnecessary
• Riders who prefer a saddle with a central exhaust channel for ventilation
• Those seeking an ultra-wide saddle for maximum cushioning rather than a compact racing design
• Cyclists looking for a saddle designed exclusively for road cycling rather than off-road disciplines

Frequently Asked Questions

What makes the Multi Sector System important for this saddle?
The Multi Sector System divides the saddle into zones with different features tailored specifically for XC and Marathon disciplines, enhancing comfort, grip, and pedaling efficiency in various riding positions.

How does the Active Base System improve comfort?
The Active Base System includes a hole under the padding that relieves pressure during pedaling, reducing discomfort and fatigue on long or challenging rides.

Why is the anatomical center shifted back by 5mm?
This adjustment increases the rider’s freedom of movement and makes pedaling from a rear position more efficient, which is crucial during extended climbs and endurance rides.

Are the Nack rails suitable for riders who want a lightweight setup?
Yes, the Nack rails are made from a composite of carbon fibre, Kevlar, and aluminum, providing an ultra-light yet rigid support ideal for performance-oriented cyclists.