Saddles are a bit like Swiss Army knives – at least when they’re meant to work equally well for gravel, cyclocross and adventure rides. One rider wants extra grip on descents, another needs cushioning for a 300 km ultra. And then there are those who want it all at once: control, comfort and versatility. Sounds like a contradiction? Not according to Prologo.
If you’re spending several days in the saddle, you need one that won’t let you down in any aspect — or feel like a saggy old couch after a few hours.¡ That’s exactly where the Scratch M5 AGX enters stage. The rounded, ergonomic shape ensures even pressure distribution, while the flexible base absorbs shocks on rough terrain. The wider nose offers extra support when you move into a more aggressive riding position.
Prologo’s proprietary Multi Sector System divides the saddle surface into different zones with varying foam densities – softer where pressure builds up, firmer where stability is required. The idea is to provide consistent comfort and support across a range of riding positions.
On Test: What is the Prologo Scratch M5 AGX Saddle Capable of?
At first glance, the Prologo Scratch M5 AGX really stands out. The bright “Light Brown” finish with black surface stripes gives it a bold, modern look, though if you prefer something more understated, it’s also available in “Hard Black.” The Nack version with carbon rails weighs just 169 g – impressively light – while the more affordable Tirox model comes with aluminium–steel rails and a few extra grams.
Out on the bike, the AGX shows exactly what Prologo are aiming for: a stable seat without feeling glued in place. The slightly rubberised Slide Control strips genuinely add grip without locking you down. Even in the wet or on rough ground, you stay comfortably planted – something you really appreciate on long gravel stretches. One small downside: the new Scratch M5 lacks a mud cover over the central cut-out.
The saddle’s classic shape – what Prologo call a “T-shape” – lets you move forward without the nose causing pressure, while the rear section provides plenty of support. The AGX comes in two widths, 140 and 147 mm, with the narrower version just about right for riders with slimmer hips.
Out on the bike, the saddle feels firm yet far from uncomfortable. The slightly more flexible base and the extra 2 mm of padding noticeably smooth out vibrations from the road or trail. Despite that, its overall character stays distinctly sporty – if you’re looking for a sofa-like feeling, this isn’t it. The central cut-out reliably relieves pressure in the perineal area, preventing any numbness even after long hours in the saddle.
Who should take a closer look at the Prologo Scratch M5 AGX Saddle?
The Prologo Scratch M5 AGX is the adventurer among Prologo’s performance saddles – built for riders who see tarmac as just a link between gravel sections. Its rounded shape and contoured silhouette provide excellent pelvic support, especially for those who don’t spend hours in the yoga studio and tend to ride in a more upright position. This helps distribute pressure evenly and prevents numbness.
Compared to the Prologo Dimension R2, the Scratch clearly shows its off-road DNA. A more flexible base and extra padding, combined with a secure seating position, deliver a smoother, more composed ride on rough terrain.Compared to the Nago R4, it feels less aggressively racy but far better tuned for long-distance comfort.
Conclusions: Would we Buy the Prologo Scratch M5 AGX Saddle?
Yes – if versatility and comfort are what matter most, the Scratch M5 AGX is a strong choice. Priced at € 219 for the Nack version with carbon rails, it sits firmly in the premium segment but still undercuts many lightweight or 3D-printed rivals. It delivers excellent damping and effective pressure relief, performing impressively even on rough terrain. With its low weight, it also appeals to performance-focused riders who benefit from the added control the Slide Control surface provides off-road.
Tops
- Low weight
- Noticeably better grip thanks to Slide Control
Flops
Find out more on prologo.it
Did you enjoy this article? If so, we would be stoked if you decide to support us with a monthly contribution. By becoming a supporter of GRAN FONDO, you will help secure a sustainable future for high-quality cycling journalism. Click here to learn more.
Words & Photos: Jan Fock