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  • Niner - RDO Carbon Seatpost - Slate

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  • Niner - RDO Carbon Seatpost - Slate

Niner RDO Carbon Seatpost


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    • Slate, 27.2
    • Slate, 30.9
    • Slate, 31.6

    8 Reviews


    Smooth your ride.

    The Niner RDO Carbon Seatpost reduces harsh vibration when you're cruising over rough terrain, thanks to what Niner dubs an "Unstiff" carbon layup. Whether you're riding a hardtail or full-suspension rig, it's designed to deflect up to twice as much shock and vibration feedback compared to regular post designs, smoothing out bumps and rocky trails for less fatigue. Note that this zero-offset post comes with a simple, easy-to-adjust two-bolt clamp with an alloy head for strength and durability.

    • Unstiff carbon layup
    • Two-bolt clamp
    • Zero setback design
    • Item #NNR0019

    Tech Specs

    carbon fiber
    27.2 mm, 30.9 mm, 31.6 mm
    [27.2mm, 31.6mm] 400 mm, [30.9mm] 370 mm
    0 mm
    Claimed Weight
    220 g
    Recommended Use
    mounting biking
    Manufacturer Warranty
    5 years

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Proves Itself Over the Miles

    • Familiarity: I've put it through the wringer

    The Niner RDO Seatpost looks and feels like a high-end carbon component. The post and lower head are a single piece of carbon, so there's not a lot of weight up high on the post. Fortunately Niner opted for a conventional 2-bolt seat clamp that is easy to adjust and works with all shapes of saddle rail. On the bike (I have the 27.2mm post on my Niner RLT9 Steel gravel bike) it helps with both vibration and bigger hits. It is also a great visual match for the Niner frame!

    Works as advertised

    • Familiarity: I've used it once or twice and have initial impressions

    Just another review from a pleased customer. The post does flex and almost gives a softail feel to my mtn bike. I feel less fatigued and with less back pain when compared to my Thompson post (which is also a solid product).
    I have a size large 29er lynskey Ti hardtail. YMMV


    • Familiarity: I've used it several times

    I recently added this to my Pivot 429c and it works as advertised. The seatpost is light and the slight bit of flex really makes for a more comfortable ride overall. I installed the seatpost with a small amount of carborn paste and have had no issues with it. I would definitely recommend this product.


    • Familiarity: I've used it several times

    Light , looks great, clamping mechanics works great, actually functional as it flexes a tiny bit and absorbs some trail chatter. Perfect on my jet 9 RDO

    Lives up to its reputation

    • Familiarity: I've put it through the wringer

    I have a Niner MCR (steel hardtail), and added it last season. It does provide a nice little bit of flex, and helped to take a bit of the edge off. I am happy to have purchased it.

    Awesome Seatpost!

    • Familiarity: I've put it through the wringer

    Seatpost is great, very stiff but at the same time it gives when it needs to and absorbs a great amount of shock. Love niner equipment, wouldn't give up niner for any other brand.

    Looks good, feels fine

    • Familiarity: I've put it through the wringer

    I'm happy with this....shiny finish, holds the seat very securely. Easy to adjust the to & fro, tip and tilt with the two seatpost bolts. Your seat design pending, the seatpost bolts are long'ish, and could ride near the underside of your seat. Color options are a great touch with their products. I'm not running this seatpost extended very far, so the compliance is probably minimal. This component goes un-noticed, perhaps that is a sign it is well done. Four stars, as it is very pricey, did not come with carbon assembly grease (for that price, should have) and no stickers...


    • Familiarity: I've put it through the wringer

    I ride my krampus to go everywhere and its amazing what difference this seat post makes. It makes staying on the saddle much more comfortable while climbing.