SR Suntour SP12 NCX Seatpost


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  • All ebike models EXCEPT RadWagon 4
  • For use on the RadRunner, purchase of a replacement seat is required as this seatpost is not compatible with the stock RadRunner seat
  • Not compatible with the RadRunner Passenger Package

The SR Suntour SP12 NCX Seatpost has been engineered and built for years of comfort and performance.


The unique and patented parallelogram design allows for small bump compliance with a total of 50 mm travel to make for a nice and comfortable ride. Minimal maintenance and long-term durability is what this post is all about.



  • 50 mm of travel
  • Brass bushing requires minimal fuss and maintenance
  • Parallelogram design
  • Internal coil spring with adjustable preload
  • Side clamp, radial detent with wide adjustment range
  • Spring is rated for riders between 140-180 lb
    • The weight limits are general guidelines to prevent excessive wear and tear on the moving components of the seat post. Customers of all sizes have made the seat post we sell work for them (provide enough cushion over most terrain)
  • Weight: 765g
  • 27.2 mm x 400 mm




    • Using this seatpost will raise the minimum seat height on all ebikes by approximately 4 inches.



    Installation Instructions

    Contact Customer Support

    Our expertly trained Customer Experience team is here to help.
    (877) 299-9404 x 3