NCX Seat Post

  • Sale
  • $ 139.95


SR SUNTOUR NCX Suspension Seatpost

Ride Further. Feel Better. Comfort That Lasts.

The timeless SR SUNTOUR NCX suspension seatpost is engineered to bring long-lasting comfort and control to every ride — whether you're on pavement, gravel, or trails. Built for performance and trusted worldwide, it's the go-to upgrade for cyclists who demand more from their saddle.

Performance Where It Counts

With 50mm of smooth travel and stainless steel bushings, the NCX seatpost reduces road buzz, trail chatter, and harsh impacts — making it the perfect solution for alleviating back pain, saddle fatigue, and rider discomfort.

One Design, Two Models

Choose the SP12 (available in 27.2mm and 31.6mm) or the SP25 (available in 30.9mm) — both deliver the same performance and ride quality, with a minor variation in linkage design. Fully compatible with traditional bikes and eBikes, installation is easy and fit is universal.

Key Features

  • 50mm Travel: Suspension comfort for smoother, more forgiving rides

  • Stainless Steel Bushings: Durable, low-maintenance, and consistent performance

  • Multiple Sizes: SP12 (27.2 / 31.6mm), SP25 (30.9mm)

  • eBike & Traditional Bike Compatible: Versatile across all platforms

  • Class-Leading Comfort: A proven upgrade for reducing rider fatigue

Upgrade your ride with the seatpost trusted by comfort seekers worldwide.
SR SUNTOUR NCX — your back will thank you.

 


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  • SP12/25 E-Bike rated
  • 50mm of travel
  • Stainless steel bushings
  • 25mm offset saddle clamp
  • Patented parallelogram suspension design
  • Preload adjustable 
  • Internal coil spring for the ultimate in comfort
  • Side clamp has a radial detent with wide tilt adjustment range
  • Requires 110mm of exposed seat post to the saddle rails to fit bike
  • Maximum extension of 300mm height for 350mm length
  • Maximum extension of 350mm height for 400mm length
  • Stock standard spring is rated for riders of 140-195lbs +/-
  • Optional hard and soft springs sold separately 
  • Optional cover sold separately
  • 7mm rail saddle rail clamp diameter
  • 2 year manufacturers warranty included
  • Made in Taiwan 


Customer Reviews

Based on 144 reviews
88%
(127)
10%
(14)
1%
(2)
0%
(0)
1%
(1)
V
Vermonting Vermonters
You should buy this seat post!

Bought this for my wife, who would feel some discomfort in her back after our 30-40 mile rides over all types of surfaces. She instantly loved it and is very happy with the performance! It was extremely easy to install as well, which is always a plus. Well done Suntour, well done!

T
Tanveer Singh
Excellent suspension quality

Excellent suspension quality. However even with 350mm it has significantly increased minimum seat heat for my priority current bike. A 300mm option would have been nice
But not a deal breaker at all!

R
Ricardo Katz Gartenberg
Very good

Very good..

B
Bob Eaton
The Suntour seat post works as advertised.

The Suntour seat post works as advertised. It smooths the road nicely.

A
Anonymous
Fast delivery and great product, A+

Fast delivery and great product. It was easy to install and the wife really likes the ride,


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