ShockStop PRO Race Suspension Seatpost
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Description
More comfort at the saddle means you’ll be able to ride longer, go faster, and maintain control even on the roughest terrain. The minimal, lightweight design of the ShockStop PRO Race Suspension Seatpost blends seamlessly with the aesthetic of modern gravel and road bikes.
Benefits:
- Race-tuned - the combination of coil springs and elastomers provides a progressive spring rate that lets the suspension work effortlessly to absorb the bumps and buzz of gravel or road riding, while still providing a firm foundation to maximize power delivered to the pedals. The PRO Race seatpost disappears into the background, letting you stay in control and focused, while leaving you less fatigued after every ride.
- PRO Level - up to 25% weight reduction (130 grams!) from original ShockStop Endurance Seatpost and ultra-sleek styling
- Go farther - reducing fatigue from bumps and vibrations
- Ride faster - energy that is normally wasted suspending your body is converted into forward motion
- Improve control - float over obstacles
- For the ultimate suspension system, pair with the ShockStop PRO Stem or ShockStop Stem
- The ShockStop PRO Race Seatpost is available in two length options:
- 280mm and 350mm
- 20mm of active suspension travel
- Race-tuned progressive spring rate elastomers & coil springs
- Optimized linkage geometry provides ultra-responsive suspension feel
- Di2 battery compatible (using standard di2 adapter)
- Check technical specifications for compatibility
What's in the Box:
- 1 x ShockStop PRO Race Suspension Seatpost
- Pre-installed inside seatpost:
- Outer Coil Spring
- Inner Coil Spring
- Green (Soft) Elastomer with End Caps
- Included in box:
- Red (Medium) Elastomer with End Caps
- All required hardware
Suggested Configurations:
Yes, reconfigure your spring stack with any combination of springs and elastomers to fit your riding style. Seatpost is shipped with inner coil, outer coil and green (soft) elastomer with end caps. Stiffer configurations available, please contact us at support@redshiftsports.com.
Technical Specifications
| Diameter | 27.2 mm (shims available for larger seat tube sizes) |
| Length | 280 mm (11 in) 350 mm (14 in) |
| Suspension Travel | 20 mm (0.8 in) |
| Rearward Offset | 7 mm (0.27 in) |
| Weight | 280 mm – 380 g (with 2 elastomers) |
| Rider Weight Limit | 110 kg (242 lb) |
| Material | 6061 T6 Aluminum Alloy |
| Saddle Rail Compatibility | 7mm round & 7x9mm oval |
| Di2 Battery Compatibility | Yes - standard battery holders will fit |
| Intended Use | ASTM F2043 Class 2 - For on and off-road riding and drops less than 15cm (6"). |
Instructions
Download Instructions (PDF):
Instructions - ShockStop PRO Race Suspension Seatpost
Installing the ShockStop PRO Race Suspension Seatpost:
Please start at 6:55 for tips on installing the ShockStop PRO Seatpost. At The beginning of the video aspects of the original ShockStop Endurance seatpost are reviewed that are not relevant to the PRO version
Video Section Time-Stamps:
00:14 Compatibility
01:41 Choosing Your Starting Setup (not applicable to Pro seatpost)
03:00 Installing Inner Spring (not applicable to Pro seatpost)
05:36 Setting Initial Preload (not applicable to Pro seatpost)
06:55 Measuring Your Existing Saddle Position
08:11 Installing the Shockstop Suspension Seatpost in Your Bike
09:56 Installing the Saddle
11:42 Positioning Your Saddle
14:03 Tightening the Saddle Clamp Bolts
16:27 Setting 20% Sag
18:22 Maintenance
US Shipping Info
- Free Shipping with tracking – Applied to all orders under $74 USD.
- Economy Shipping with tracking – Orders over $74 USD qualify for free shipping.
- Economy Shipping with tracking – 1-3 business days after processing time.
- Orders ship via our third-party fulfillment service, that will select the most efficient carrier based on your location. Standard delivery typically takes 3-8 days, though in some cases, it may extend up to 15 days.
- Order processing time is 1-3 business days.
- If you order multiple items, they may be shipped from separate warehouses and may not arrive at the same time.
90 day risk free trial & returns
Different bikes sometimes have different seatpost diameters. The ShockStop Seatpost is 27.2mm in diameter, so if your bike's seatpost is larger, you'll need a shim to adapt our seatpost 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.
350mm is our standard size, but we developed the 280mm to allow for a wider range of fits. Measure your current seatpost from the clamp collar to the saddle rail - If that distance is less than 205mm, you can use the 280mm seatpost. If not, order the 350mm size.
Smooth. Controlled. Effortless. The Future of Suspension
Years of research, cutting-edge technology, and rider-focused design—built to revolutionise your ride.
Adjustable Stiffness
Fine-tune your ride with customizable settings, optimising comfort and performance for any terrain.
Precision-Engineered Shock Absorption
Eliminates road buzz and dampens impact forces, reducing strain on hands, wrists, shoulders and back.
Optimised for All Riding Styles
Whether you're racing, exploring or commuting, we have an option that is designed to improve your riding experience.
Redshift trusted by
200,000+
As seen in
Spencer
Bought this post because of the AWFUL Chicago streets, and I am overjoyed at it's performance. I love that it is adjustable, feels extremely well-made, and enhances the look of my e-bike. Thank you for such a thoughtful product, my butt especially thanks you. Money well spent!
William S
This is a great addition to my gravel bike. It took a few adjustments to get the right elastomers but, it definitely smooths out the ride. Will be purchasing a set for my road bike.
Scott C
This seat post is a game changer!! Absolutely love it on my gravel bike .gonna get one for my hard tail Mtb now
TD
Love the stem!! It really takes out all the worse bumps from your ride, and on rough trails really did offer a smooth comfortable ride.
Lawrence C
I hesitated buying this stem wondering would it work, was it a waste of money but I’ve had three off road rides with my new stem and I love it. I usually get pins and needles in my hands after riding for a while but that’s gone now. Added to the comfort is the improved handling on bumpy tracks and roads. I can ride a corrugated road now without feeling like I will get shaken off the bike. Very happy.
Jim G
I love my Redshift post! I recently had a lumbar contusion and the post has smoothed and cushioned the roads and trails. I’m able to stay on the bike while healing.
Ian S
After much thought I bought a red shift suspension stem and initial thoughts are that it's good, think they will become standard across all my gravel bikes.
Stephen H
I just finished my first ride with the Resdhift Shockstop Suspension Stem and I noticed the difference immediately. Having ridden for many years with rigid front ends (I’m 64) I now wish I had discovered this earlier in my life. The chatter that it removes from my wrists, arms and shoulders is easily noticed. This experience has been so good that now I’m considering the seatpost Redshift offers as well. The interesting thing for me is that I’ve promoted and sold these products for years based upon input from others. I just didn’t think I needed one myself. Get yourself one! You’ll never go back.
Mark G
The shock absorber was easy to install and works as described cuts down on the impact. I recommend it if you're going to do gravel, writing and bumpy bumpy roads
Karlos R
Wow, once I got the fit dialed on this seat post I thoroughly understood why everyone was upgrading their set ups with these products. Riding a long distances is what I do for fun and for a living and this seatpost made all the difference in the world. Pay attention to the recommended Sag settings as its key to finding comfort and keeping a proper pedaling extension. 10 out of 10 would recommend.
Perfect For
Gravel Riding
Absorbs rough terrain and vibrations, improving comfort and control on long gravel rides.
Road Cycling
Reduces road buzz and impact from potholes, allowing for a smoother, more efficient ride
Bikepacking & Touring
Minimises fatigue on long-haul adventures, making multi-day rides more comfortable
Commuting
Handles city streets, curbs, and uneven surfaces with ease for a more enjoyable daily ride.
- Reviews
- Questions
GermanyOverall great product.
I was a bit worried about the weight of the product. I have been using suspension seatpost on my cyclocross bike with 700x38 and it was amazing how much it improved the gravel chatter. I felt comfortable to attack basically any gravel seated which would be impossible before. Totally worth the weight penalty.
United States
SingaporeGame changer for both road and off-road.
Originally bought it to make gravel rides more comfortable, but it’s such a game changer even for regular road rides. Convinced that i’m gonna have this for all my non full-sus bikes from here on.
Best upgrade I’ve done to my road bike
Upgrading from a Canyon VCLS 2.0 CF to the ShockStop PRO Race post significantly increased my comfort and speed on my road bike on bumpy, potholed roads our Canadian winters wreak havoc on.
Seatpost pro
This product is fantastic. I can ride longer and faster now. maybe I should also have a stem
Best comfort upgrade I’ve made my road bike
I upgraded to the ShockStop PRO Race seatpost and could not be happier. It significantly increased my comfort and speed on my road bike on rough pavement with no downsides / unwanted bobbing, allowing me to And this was going from an already compliant setup - T-lab Omni R3 (titanium) frame on 30mm GP5000 tires, with a Canyon VCLS 2.0 (identical to the Ergon Allroad CF Pro Carbon) post.
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