ShockStop Seatpost: Add Suspension to Your Bike

Created by Redshift Sports

An adjustable-stiffness suspension seatpost that smooths out your ride; perfect for gravel, road, commuter, mountain, and e-bikes

Latest Updates from Our Project:

Tooling, Contamination, & Flying Mounts!
about 1 month ago – Tue, Nov 06, 2018 at 11:40:06 PM

Locked & Loaded

If you've been following the project updates, you know that we've been really focused on testing and design changes up to this point. We delayed the start of production tooling to incorporate a number of important design changes that dramatically improved the functionality and longevity of the seatpost (read about some of those changes here).

So we're happy (and relieved) to announce that the design is finally locked down and production tooling is underway. In this case "tooling" refers to the forging molds, extrusion dies, and machining fixtures that will be used to produce the individual parts of the seatpost. These tools are what make it possible to shape the raw materials consistently and cost-effectively into finished parts.

The next critical juncture is the first-article inspections of the production samples (produced using the tooling described above) which will happen toward the end of this year.

We've Got a Thing for Mud

Just because tooling is underway doesn't mean we've stopped testing. We've shifted our focus to contamination testing to make sure that the performance of the pivots and seals is bulletproof in the worst riding conditions. That means a combination of lab testing with sand, water, mud, etc., as well searching out the worst-possible conditions for ride-testing. 

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In search of mud...
In search of mud...

Seatposts in the Wild

Our team continues to put the prototypes through their paces, not only during competitive events, but also commuting and just tooling around town.

ShockStop Seatpost = 8,763 ft of Climbing at Grinduro
ShockStop Seatpost = 8,763 ft of Climbing at Grinduro
ShockStop Seatpost = More comfy flying mounts
ShockStop Seatpost = More comfy flying mounts
ShockStop Seatpost = Better-behaved kids*
ShockStop Seatpost = Better-behaved kids*

 * Claims of improved child behavior have not been independently verified.

We'll provide another update in about one month with further details, but as always, if you have any questions or comments, please feel free to reach out via the Kickstarter comments, Facebook, or via email at support@redshiftsports.com.  

The Redshift Team

Design Changes & Schedule Update
3 months ago – Wed, Sep 26, 2018 at 12:16:03 AM

Greetings Backers! 

It's been a hectic end to the summer here - we've been hammering away on design changes, testing, and manufacturing logistics, and we're overdue for an update. 

Design Updates

We've made a number of important design changes to the seatpost based on testing and rider input. Some of the changes were planned before the Kickstarter, and some were based on valuable feedback that we received from backers during and after the campaign. 

2 > 1 - The most visually obvious change is the switch to a 2-bolt saddle clamp from the previous side-address one-bolt design. User testing showed that it was difficult for riders to achieve the high bolt torque required to prevent slippage, especially using a small multi-tool that riders often carry.

New 2-Bolt (left) vs Old 1-Bolt (right)
New 2-Bolt (left) vs Old 1-Bolt (right)

The switch to a bombproof 2-bolt clamp system required a complete overhaul of the rear linkage of the post, as well as additional testing to ensure that the revised mechanism could withstand the high forces that are applied to the saddle. But we think the benefits are worth the extra effort:

  • Bombproof tilt adjustment - the two bolt design virtually eliminates the possibility of slippage, and saddle tilt can be precisely adjusted very easily.
  • Lower torques - the torque specs for the bolts are around 6 N-m (compared to 14 N-m for the side-address design), meaning that trail-side adjustments are easy to do with a standard multi-tool.
  • Lower profile appearance - the two-bolt design is much lower profile than the one-bolt design, resulting in a sleeker look and better aerodynamics.

The Missing Link(age) - Under the hood, we updated the connection between the lower linkage and the spring plunger to include a separate short linkage. The previous cam connection was wearing prematurely in high-contamination (aka "muddy") conditions. The addition of the plunger linkage eliminates the wear point and makes the suspension action smoother and more responsive.

Tiny linkage. Big deal.
Tiny linkage. Big deal.

Fend for Yourself - Last but not least, based on our backers' feedback, we'll be including a removable fender with every seatpost. For those of you who frequent the aforementioned "high-contamination" environments, the fender is a great way to extend the duration between service/cleaning intervals and keep the seatpost running as smooth as possible. We'll have more details and photos of the fenders in our next updates.

May we suggest a side of fender with that mud pie?
May we suggest a side of fender with that mud pie?

Schedule Update

As you may have guessed, these design changes and associated prototyping/re-testing have delayed our production and shipping schedule. We had hoped to have the seatposts in your hands by the end of the year, but we're now targeting early 2019 instead.

Our mission here at Redshift is to produce the highest-quality components, and sometimes that means delaying shipment of a product in order to make it live up to your (and our) high expectations. Thank you so much for your patience and support - none of this would be possible without our backers, and we love that we get to share our journey with all of you.

As always, if you have any questions or comments, please feel free to reach out via the Kickstarter comments, Facebook, or via email at support@redshiftsports.com.

The Redshift Team

Testing, Testing...1, 2, 3
4 months ago – Mon, Aug 06, 2018 at 11:31:23 PM

Hey Backers -

Thank you to those of you that have filled out your surveys! If you're one of the few who haven't completed it yet, go ahead and check it off your to-do list - it only takes a few minutes. If you have not received an email with a link to your backer survey, check your spam folder first to see if it got routed there (you're looking for an email from Backerkit). Still can't find it? Go ahead and reach out to us at support@redshiftsports.com and we'll get you sorted.

Testing All Day, Testing All Night

Since the end of the Kickstarter, we've been continuously testing the seatpost prototypes both in the lab as well as out in the field. With the ShockStop Seatpost (and all of our products), safety is our number one concern. To that end, we run a variety of fatigue and impact tests to make sure that the seatpost is structurally sound. Some of these tests are mandated by ISO standards, and other tests go above and beyond the standards to make sure that the seatpost is completely safe.

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We also test for functionality, focusing on areas like pivot durability, plunger sealing, and spring performance. Sometimes that means heading out in less-than-ideal conditions.

Contamination Test-Fest
Contamination Test-Fest

Ride testing exposes the seatpost to a wide variety of conditions and rider weights, giving us critical feedback regarding usability (how easy is it to use), functionality (how well does it work), and durability (does it keep working). And naturally, it's the most fun part of the job!

Riding the D&L Trail
Riding the D&L Trail


Lost & Found

Erik put the seatpost through its paces last month at the Lost & Found gravel ride in Portola, CA. It was a fun-filled weekend - the weather was perfect for riding, and the seatpost did not disappoint over the rough Sierra Nevada terrain. Thanks to everyone who stopped by the Redshift Tent.

Lost & Found 2018
Lost & Found 2018

Erik will also be riding in the Grinduro event (September 29 in Quincy, CA), so if you're taking part, make sure you stop by the tent to say hello and check out the seatpost in person.

Thanks for reading, and as always, if you have any questions or comments, don't hesitate to reach out via the Kickstarter comments, Facebook, or at support@redshiftsports.com. We'll have another update coming shortly with details about design updates and schedule so stay tuned!

- The Redshift Team

Survey Deadline and Stem Shipping
5 months ago – Tue, Jul 10, 2018 at 01:31:36 AM

This post is for backers only. Please visit Kickstarter.com and log in to read.

Surveys Are Out!
6 months ago – Thu, Jun 21, 2018 at 08:58:34 PM

This post is for backers only. Please visit Kickstarter.com and log in to read.