Hardtail bikes save money but punish your lower back on every bump. The SR Suntour NCX suspension seatpost adds the comfort of rear suspension without the cost or complexity, using a parallelogram design that absorbs hits other seatposts pass straight through.


Key Features
- 50mm of smooth suspension travel absorbs bumps and trail chatter
- Available in 27.2mm, 30.9mm, and 31.6mm diameters — measure your seat tube before ordering
- Adjustable preload to tune for your rider weight (standard spring supports 143-198 lbs)
- Stainless steel bushings for durability and smooth operation
Specifications
| Material | Aluminum with stainless steel bushings |
|---|---|
| Weight | 2.0 lbs (907g) |
| Travel | 50mm |
| Diameters Available | 27.2mm, 30.9mm, 31.6mm |
| Preload | Adjustable |
| Spring Range | 143-198 lbs (standard) |
| Bushings | Stainless steel |
Frequently Asked Questions
What diameter seatpost do I need?
Measure your seat tube inner diameter. This seatpost comes in 27.2mm, 30.9mm, and 31.6mm. Most fat tire e-bikes like Rambo and Bakcou use 30.9mm or 31.6mm. Check your current seatpost or seat tube for the correct size.
Can I use this on a Velowave, Magicycle, Cyrusher, or other e-bike?
Yes. This seatpost fits any e-bike with a matching seat tube diameter (27.2mm, 30.9mm, or 31.6mm), including Velowave, Magicycle, Cyrusher, KINGBULL, and all other brands we carry.
How much does a suspension seatpost help on trails?
The 50mm of travel absorbs bumps that a rigid post transmits directly to your body. Riders report significantly less fatigue and soreness on long off-road rides. It's one of the best comfort upgrades for hardtail e-bikes.