Free Shipping & Free Returns* for US, UK, EU, CA, & AUS - 10% OFF Your 1st Order!

Free Shipping & Free Returns* for US, UK, EU, CA, & AUS - 10% OFF Your 1st Order!

ShockStop City Suspension Seatpost

Regular price
$179.99
Sale price
$179.99

ShockStop City Suspension Seatpost

Regular price
$179.99
Sale price
$179.99

The patent-pending ShockStop City Suspension Seatpost provides 35mm of tunable, ultra-responsive suspension travel for the ultimate bump-eating comfort. Designed specifically for e-bikes, commuting and city riding to help you ride farther, faster, and more comfortably on the bike you already own. 

Redshift has recently expanded our ShockStop Seatpost line, see the full product detail comparison here.

Ships end of May
Ships end of May
Ships end of May
Ships end of May

DESCRIPTION

• More comfort & less fatigue - the ShockStop City Seatpost smooths out your ride and reduces fatigue from bumps and vibrations with superior shock absorption. 
Better performance & complete control - customize your suspension seatpost feel to float over obstacles and maintain traction and control.
• Ride faster & farther - energy that is normally wasted suspending your body over bumps, cracks and potholes is converted into forward motion.  

Features 

• 35mm of active suspension travel optimized for e-bikes, commuting, city riding, and recreation
• Optimized linkage geometry provides ultra-responsive suspension feel
• Infinitely adjustable stiffness via pre-load adjustment and swappable springs
• Adjusting stiffness / pre-load does not reduce travel
• Swappable springs included to accommodate heavier riders and/or ride preference
• Check technical specifications for sizes & compatibility

What's in the Box:

• 1 x ShockStop City Suspension Seatpost
• 2 x springs (1 pre-installed, 1 included in box for increased stiffness)
• All required hardware

What is a Suspension Seatpost?

A suspension seatpost is a specially designed bicycle seatpost featuring shock absorbing construction that helps smooth out bumps in the terrain to reduce the impact to the rider.

The ShockStop lineup of suspension seatposts feature a proprietary parallelogram design, which allows for the suspension to remain active even when you're seated and pedaling. This means that you can benefit from the suspension's smoothing effect even when you're putting down power, unlike some suspension seatposts that become rigid when you're pedaling.  Check out a comparison of our entire lineup of seatposts here.

Benefits of a Suspension Seatpost

Improved comfort: Suspension seatposts help to absorb shocks and vibrations from rough roads, reducing stress and fatigue on your body, especially your hands, arms, and back. This can lead to a more comfortable ride and reduced risk of injury.

Improved control: By absorbing shock and vibrations, a suspension seatpost can help to maintain traction and stability on rough roads, allowing you to ride with more confidence and control.

Reduced fatigue: By allowing you to stay seated & pedaling more often on rough terrain,  a suspension seatpost can help you to conserve energy and ride for longer without feeling as tired.

Better performance: By allowing you to maintain traction and control on rough roads, a suspension seatpost can help you to ride faster and more efficiently.

 

 

+TECHNICAL SPECIFICATIONS

Diameter and Lengths Available

  • 30.9mm x 350mm, 30.9mm x 400mm
  • 31.6mm x 350mm, 31.6mm x 400mm

 

Diameter30.9mm, 31.6mm 
Length350 mm (14 in)
400mm (15.7in)
Suspension Travel35 mm (1.4 in)
Rearward Offset7 mm (0.27 in)
Rearward Offset (@ 25% travel)12 mm (0.47 in)
Spring Pre-loadUser Adjustable
Weight350mm – 612 - 652g - w/main spring
400mm – 635 - 680g - w/main spring
Rider Weight Limit139kg (308lb)
Material6061 T6 Aluminum Alloy
Saddle Rail Compatibility7mm round 
Intended UseASTM F2043 Class 2 - For on and off-road riding and drops less than 15cm (6").
+FAQ

What is the minimum and maximum insertion depth and clearance for the ShockStop Suspension Seatpost?

What length should I choose?

Measure your current seatpost from the clamp collar to the saddle rail and refer to the chart above to choose your preferred size - if your required length or diameter is not available in the City Seatpost, we have more options available in the Endurance Seatpost
 

 

What kind of saddle bags can I use with the ShockStop Suspension Seatpost?

Most standard strap-based saddle bags will fit the ShockStop Suspension Seatpost without issue. If your saddle bag uses rigid clips, clamps, or some other inflexible attachment method, it's possible that your bag may not be compatible.
Any bag that just attaches to the saddle or just attaches to the post is fine. But when you attach to both the post and the saddle you need to account for the relative motion of the saddle to the post. This means that if you cinch down the bag when off the bike it might have some movement when you get on the saddle and compress the post a bit - this might not be a problem but it might be something that is an issue.
It all really depends on weight and how stable the bag is and if it is attached to both the post and the saddle - it can be fine but with a lot of weight it will mean it can move around when the post is compressed. It will likely come down to testing it out with your specific bag to see how it works. And if you have a bag that is able to be secured to just the post or to the post and a rear rack then you will be all set.

 

Is the stiffness of the ShockStop Seatpost adjustable?

Absolutely - We designed the ShockStop Suspension Seatpost so that you can adjust it to perfectly match your weight and riding style. The Shockstop Suspension Seatpost comes with a standard spring and an additional spring that can be added inside the standard spring to increase the stiffness. The preload adjustment knob at the bottom of the seatpost allows you to adjust the spring preload - the amount of force required to cause the saddle to start moving.
 

To read more Frequently Asked Questions, click here.

+INSTRUCTIONS

Download Instructions (PDF): coming soon

 


 

X

Different bikes sometimes have different seatpost diameters. The ShockStop City Suspension Seatpost comes in 30.9mm and 31.6mm diameters, so if your bike's seatpost is a different size, you'll need a shim to allow the 31.6mm size to adapt to your bike's frame. Don't worry though, the shims are super-lightweight and essentially invisible once installed.

Not sure what size seatpost you have currently? There are a couple different ways to find out.

• Most seatposts have the diameter printed somewhere near the bottom of the post. You'll need to remove the seatpost from the bike frame (mark your existing seatpost height with a bit of tape before you remove it so you can replace it easily), and look for a number like 27.2, 30.9, or 31.6 (etc.). That is the diameter of the post.
• If you know the make, model, and year of your bike, you may be able to look up the seatpost diameter online. Feel free to shoot us an email at info@redshiftsports.com - we'll see if we can help out.
• Ask your local bike shop - they'll be able to accurately measure your bike's seatpost.


Non-compatible posts: Unfortunately, if your bike's seatpost is smaller than 27.2mm (for example, the 25.4mm posts found on some recent model Cannondale Synapses) our seatpost is currently not compatible with your bike. Likewise, if you have a bike with an aero/oval/non-round seatpost, or if your bike has an integrated seatmast, the seatpost is also not compatible.

What length should I choose? 350mm or 400mm?

350mm is our standard size, but we added the 400mm to allow for a wider range of fits (as well as 280mm and 450mm in some of our other seatpost versions). Measure your current seatpost from the clamp collar to the saddle rail:

  • If that distance is less than 205mm, you can use the 280mm suspension seatpost (You'll need to choose the Endurance Seatpost).
  • If it is between 205mm and 250/275mm (depending on diameter) order the 350mm size.
  • If it is between 250 (larger diameters than 27.2) and 300mm order the 400mm size.
  • If it is between 300 (larger diameters than 27.2) and 350mm order the 450mm size (available in the Endurance Seatpost version).

 

RELATED PRODUCTS