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Prologo NAGO R4 PAS Tirox saddle, 147 mm

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Delivery method on Tuesday 09.06.2026
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5/5

Prologo NAGO R4 PAS Nack saddle

The NAGO R4 PAS (Redesign 4) is an evolution of the iconic NAGO, the 2008 Prologo seat that has won the Giro d'Italia and many classics over the years. Designed based on the needs of professional teams supported by Prologo, the new saddle has been refined by " Pressure Map MyOwn " testing to meet the needs of all cyclists looking for maximum performance and comfort even on long rides.

Compact dimensions with a length of 245 mm and a T-shape, with a slightly advanced anatomical center, provide good freedom of movement in the saddle and maximize pedaling efficiency in all positions. The semicircular ergonomic shape makes the NAGO R4 PAS Tirox ideal for cyclists:

The 147mm version has 10mm more padding on the sides and 3mm on the top and is suitable for:
  • cyclists with a wider gap between the sitting bones, who therefore require a wider base of support on the saddle;
  • cyclists with a high body mass index (BMI) who can benefit from increased padding for better weight distribution;
  • cyclists looking for an even more comfortable saddle.
Product features
Two separate pads with variable density ensure excellent support and comfort throughout the ride
Wide center channel and perforated base to eliminate pressure peaks even during maximum pedaling phases
The base is made of long-fiber carbon, which offers an excellent compromise between stiffness and comfort
The TiroX rail is made of light alloy steel with an excellent balance between weight and strength
Product details
Sex Men
Colour black
Saddle width 147 mm
Saddle rails material steel
Specification Racing
Length 245 mm
Weight 203 g
product ID 315176
Product rating  (7 ratings)
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Variant Prologo NAGO R4 PAS Tirox sedlo, 137 mm

It turned out surprisingly well, although I ordered it without being able to try it on beforehand, but it worked perfectly. I knew that my ischial width was narrow, which is why I agreed to "try it out". At first it felt as if there was nothing under me, but since then I've done a couple of longer trips with it, and it didn't disappoint.

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Variant Prologo NAGO R4 PAS Tirox sedlo, 137 mm

After measuring the seat bone distance, it turned out that I needed the wider version (147mm). It worked in the tests! (3-4 hours) It has good support, is stable, and the material of the cycling shorts does not slip on it.
The cutout in the middle is very useful.

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Variant Prologo NAGO R4 PAS Tirox sedlo, 137 mm

I bought it for gravel... I was very curious how it would fit... the result is excellent, it fits perfectly ? I am very satisfied

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Variant Prologo NAGO R4 PAS Tirox sedlo, 137 mm

SK Dobrý deň,
je možné si u vás požičať na otestovanie sedlo Prologo? Konkrétne tento model model Prologo Nago R4 137mm, alebo Prologo Nago R4 Tirox 137mm.
Ďakujem.

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SK Dobry den prajem,

zial Nago R4 na zapozicanie nemame Jedine Nago Evo, prip. modely Scratch alebo Dimension.

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SK Dobry den, daju sa tieto sedla prologo, ktore uvadzate pozicat aj v novootvorenej predajni v BB? Dakujem.

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SK Dobry den,
v BB aktualne k zapozicaniu od Prologo len sedla Proxim W350 T2 a Scratch M5.

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A brand from Italy with more than 10 years of history in the production of saddles. In addition to saddles, it also offers grips, wraps and gloves. Their products are also used by World Tour riders.

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