Outdoors & Fitness · Head-to-head
Redshift Sports ShockStop Endurance Suspension Seatpost vs Cirrus Cycles Kinekt XR Aluminum Suspension Seatpost
Which should you buy? Our verdict on both, pulled from our full The Best Suspension Seatposts: 4 Compared (and One to Skip) comparison.
The ShockStop Endurance wins on breadth: the same 35mm of travel as the lighter posts, the widest range of lengths and diameters, and two springs in the box so most riders are covered on arrival. The Kinekt XR is the one to take if your weight or your cargo is near the top of the scale, because it publishes the widest window and includes every spring.
Redshift Sports ShockStop Endurance Suspension Seatpost
Buy itA parallelogram linkage post with 35mm of travel that stays active while you are seated and pedalling, sold in more lengths and diameters than anything else here.
- Redshift states 35mm of suspension travel and a 7mm rearward offset, rising to 12mm at a quarter of travel.
- Four lengths, 280, 350, 400 and 450mm, across 27.2, 30.4, 30.9 and 31.6mm diameters.
- Two springs ship in the box, one installed and a stiffer one spare, so most riders are covered on arrival.
- Rider weight limits are published per diameter: 110kg or 242 lb on 27.2 and 30.4mm, 120kg or 264 lb on 30.9 and 31.6mm.
- Heaviest of the non-dropper posts here, from a stated 497 grams at 280mm to 732 grams at 450mm.
- The linkage is visible and mechanical looking, which not everyone wants on a road bike.
- The rider limit is lowest on 27.2mm, the diameter most road and gravel frames use.
Cirrus Cycles Kinekt XR Aluminum Suspension Seatpost
Buy itThe only post here that states a full rider weight window rather than a ceiling, and it arrives with every spring you might need already in the box.
- Cirrus states a rider window of 80 to 320 lb, or 36 to 145kg, which is the widest published here.
- Five springs supplied: two installed and three more in the box, so no follow-up purchase.
- A preload adjuster knob you can turn by hand, including mid-ride.
- Stated travel range of 0 to 35mm and a 24mm setback, with 6061 aluminium, stainless hardware and Igus bushings.
- Weight is not published on the product page, and the dual-spring linkage is not a light design.
- Only two lengths, 350 and 420mm.
- The linkage is tall and bulky, so it needs seatpost height to work with.
Side by side
| Redshift Sports ShockStop Endurance Suspension Seatpost | Cirrus Cycles Kinekt XR Aluminum Suspension Seatpost | |
|---|---|---|
| Our verdict | Buy | Buy |
| Best for | Gravel, endurance road and commuting riders who want a post that keeps working under power and comes in a size that fits. | Heavier riders, cargo and e-bike riders, and anyone who would rather the correct spring arrived with the post. |
| Price tier | $$ · mid-range | $$$ · premium |
The bottom line
Our overall pick is the Redshift Sports ShockStop Endurance Suspension Seatpost - A parallelogram linkage post with 35mm of travel that stays active while you are seated and pedalling, sold in more lengths and diameters than anything else here. Choose the Cirrus Cycles Kinekt XR Aluminum Suspension Seatpost instead if heavier riders, cargo and e-bike riders, and anyone who would rather the correct spring arrived with the post.
Want the full picture, including the other options we compared and the popular one we'd skip? Read the complete The Best Suspension Seatposts: 4 Compared (and One to Skip).