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Item # PRL0101

5 5

Community Rating | 2 Reviews

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  • Hard Black, 134mm ($285.00)
  • White/Black, 134mm ($285.00)
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Item # PRL0101


Support where you need it.

The Prologo Scratch Pro Nack Saddle combines the race-ready silhouette of the Nago Evo with a profile of an endurance saddle. It's especially well-designed for riders who spend the majority of the time in the saddle, even while climbing.

The Scratch Pro Nack has a variable stiffness frame made of injected carbon. Varying the stiffness allows the frame to flex in the middle, which leads to better shock absorption and less rider fatigue. The multi-density foam used on top of the frame follows the same principles. A softer padding lines the midsection, while a firmer padding is placed across the paddle (the widest portion), where you sit. Firmer padding not only supports the sit bones, but it also reduces "bouncing," which robs power transfer to the pedals. The saddle is set upon Nack rails. These are carbon fiber woven with Kevlar, and they are interspersed with aluminum particles for added durability.

The round profile of the Scratch Pro Nack is one version of the three profiles Prologo manufactures. The rounded design provides even contact with the saddle across the sit bones, thereby minimizing hotspots. In conjunction with the round shape, the Easy Stroke Design (ESD) transitions the widest part of the saddle into deep leg cutouts. This exaggerated silhouette reduces friction points along the inner thighs and helps transfer power more efficiently to the pedals. This endurance saddle was finished off with a tough microfiber cover that resists scratches and abrasion.

Prologo's Scratch Pro Nack Saddle is 134mm wide, and it comes in the colors Hard Black and White/black.

Tech Specs

carbon fiber injection
Seat Length:
278 mm
Seat Width:
134 mm
Claimed Weight:
165 g
Recommended Use:
road cycling
Manufacturer Warranty:
1 year

Reviews & Community

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Here's what others have to say...

5 5

worthy upgrade

  • Familiarity: I've put it through the wringer

I upgraded to this saddle from the previous Prologo Scratch Pro Nack Saddle. The CPC technology really is noticeable and effective. Definitely worth the upgrade to this. It's hard to ride on other saddles that don't have the CPC now...

Unanswered Question

I own prologo pro nack scratch cpc saddle...

I own prologo pro nack scratch cpc saddle and a Cervelo s5 ultrega di2 model. is there a way to mount the seat that has carbon rails? Theses seat has oval rails unlike traditional saddle rails and the cervelo seat post is made for round rails. Is there an adapter or something alternate that can be done? Thanks al


4 5

No More Moving Around

  • Familiarity: I've used it several times

I have been riding on ProLogo Saddles for the last 3 years. I recently purchased a new high end carbon fiber bike and outfitted it with this new saddle from Prologo. It was really incredible. You absolutely are solidly anchored (no movement) onto the saddle thereby increasing your overall ability to apply all the power in your legs down to your pedals. By eliminating movement around your seat, this saddle has the real potential to also prevent certain medical conditions due to various forces and pressures being applied as your riding. If you want more stability and more power being directed in the right places consider trying the Prologo Scratch Pro Nack CPC Saddle

Responded on

I would add to this review that Prologo CPC technology helped alleviate my piriformis syndrome issues.