Scratch & Dent - ShockStop Oversized Non-Standard Suspension Stem
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Description
What is a Redshift "Scratch and Dent" product:
That means that for whatever reason, this particular product didn’t live up to our high standard of quality, but is still perfectly safe to ride - and therefore available to you for a discount!
There may be a cosmetic issue, damage to the outer packaging, or the product was installed on a bike to test fit or take some photos. Often times these products are completely new!
Scratch and Dent products are not available in the UK, EU, AUS, CAN, and JPN. Additionally, you can not apply discounts to Scratch and Dent products.
NOTE: Physical performance & durability are not compromised in any way. So all Scratch and Dent products are still covered by our lifetime warranty, however ALL SALES ARE FINAL, and our 90 Day Risk Free Trial does not apply.
The Oversized Steerer ShockStop Stem is only applicable to frames with an oversized 1-1/4" diameter steerer tube (such as those made by Canyon, Giant, and Scott). If you're unsure if your bike has an oversized steerer tube, please email us at support@redshiftsports.com and we're happy to help.
If you're looking for standard 1-1/8" diameter steerer tube ShockStop Scratch & Dent Stems in 55-120mm lengths, you can find them here.
The minimal design of the ShockStop Stem blends seamlessly with the aesthetic of modern bikes, while reducing fatigue and strain. Along with the ShockStop Suspension Seatpost, this system works together to suspend the rider and smooth out rough terrain on the bike you already own, making your ride smoother, faster, and more comfortable. Great for bikepacking, gravel biking and commuter e-bikes.
Benefits of a Suspension Stem:
• Go farther - reduce fatigue from bumps and vibrations
• Ride faster - energy that is normally wasted suspending your body is converted into forward motion
• Take control - customize your suspension feel to float over obstacles and maintain control over rough terrain
Suspension Stem Features
• The Oversized ShockStop Stem is applicable to frames with oversized 1-1/4" diameter steerer tubes (like Canyon, Giant, and Scott).
• It comes in +/-6 degree angles and 80, 90, 100, 110, and 120mm lengths
• Effective suspension travel:
- Up to 20mm
• Includes 5 swappable elastomers to fine tune your riding style
• Check technical specs for compatibility details
What's in the Box:
• 1 x ShockStop Stem
• 5 x swappable elastomers (2 pre-installed, 3 additional in box)
• All required hardware
Technical Specifications
| Weight | 256 g +/- 6 deg, 80mm For oversized steerer, add 2-5 g |
| Steerer Clamp Diameter (A) | Standard 1-1/8 inch (28.6 mm) |
| Handlebar Clamp Diameter (B) | 31.8 mm |
| Effective Travel | Up to 20mm |
| Material | 6061 T6 aluminum |
| Rider Weight Limit | 135 kg (300 lb) |
| Steerer Tube Clamp Stack Height | 40mm |
Instructions
Download Instructions (PDF):
Instructions - ShockStop Suspension Stem - 90-120mm lengths
Instructions - ShockStop Suspension Stem - 90-120mm lengths (Torx Bolt Version - Torx Tool Included)
Instructions - ShockStop Suspension Stem - 80mm length
Installing the ShockStop Stem (see below for 80mm elastomer install details):
Elastomer Install and Removal for 80mm ShockStop Stem:
Elastomer Selection Chart:
(See instructions and video for elastomer installation details)
The above chart provides a good starting point when first setting up the stem. The chart below shows the full list of elastomer combinations, in order of increasing stiffness:
Shipping Info
90 day risk free trial & returns
There are two different optional mounts available: the Computer Mount, and the Utility Mount:
The Computer Mount is an integrated mount that is compatible with your Garmin, Powertap/CycleOps Joule, CatEye, Mio/Magellan, Polar, or Wahoo bicycle computer (for options not in drop down, please email us at support@redshiftsports.com).
The Utility Mount puts a small section of tube in front of the stem that provides a location to mount anything you would normally put on your handlebar (bike computer, phone, light, etc.).
The ShockStop handlebar clamp is 31.8 mm which is compatible with many modern bikes, without the need for shims. However, some bicycles have different size handlebars which may require the use of shims to fit properly into the ShockStop handlebar clamp. We have shims available for 26.0 mm and 25.4 mm handlebar sizes.
- 25.4 mm is common on bikes with flat handlebars.
- 26.0 mm is common on older road bikes with drop handlebars. - There are other less common sizes that we do not provide shims for. However, other handlebar shim sizes may be available at your local bike shop.
- Note that some mountain bikes have “over-sized” 35 mm handlebars which are not compatible with the 31.8mm clamp and would need to be replaced with a 31.8 mm handlebar in order to be compatible with the ShockStop Stem.
The easiest way to determine your handlebar size is to see if it's printed on the handlebar. This will require removing your current stem faceplate.
If you can't find the printed size, there are a couple ways you can measure your handlebar:
Best method: Use a pair of calipers to directly measure the diameter or take your bike to the local bike shop and they will be able to measure it for you.
Alternate method: Use a fabric or paper measuring tape (or print one at https://printable-ruler.net/ ) and measure the circumference of the handlebar right next to your existing stem.
- A 31.8 mm handlebar will be 99.9 mm in circumference at the center.
- A 26.0 mm handlebar will be 81.7 mm in circumference at the center.
- A 25.4 mm handlebar will be 79.8 mm in circumference at the center.
Keep in mind that 25.4 and 26.0 mm are very close in size.
If you are not able to measure your handlebar, and you know the make, model, and year of your bike, you may be able to find the handlebar size online at your frame manufacturer's website.
The ShockStop is available in two different Steer Clamp options: 1-1/8” and the new 1-1/4”
The 1-1/8in ShockStop stem fits standard 1-1/8in (28.6mm) steerer tubes which is the size used by most modern bikes. With the introduction of our new 1-1/4” version the Shockstop can now be used on popular brands such was Giant and Canyon bikes.
The easiest way to determine your steerer tube size is to use a pair of calipers to directly measure the diameter or take your bike to the local bike shop and they will be able to measure it for you.
If you don’t have easy access to either a shop or a set of calipers you can check your manufacturers website. Most of the time a manufacturer will list this under their specifications in the Frame/Fork section. Make sure you are looking at the correct model year as these sizes can change year to year.
Alternate method: Use a fabric or paper measuring tape (or print one at https://printable-ruler.net/ ) and measure the circumference of the handlebar right next to your existing stem.
- A 1 1/4”(31.8 mm) steerer clamp will be 99.9 mm in circumference at the center.
- A 1 1/8” (28.6mm) steerer clamp will be 89.9 mm in circumference at the center.
- A 1” (25.4 mm) steerer clamp will be 79.8 mm in circumference at the center.
Stem Angle
The ShockStop is available in two different angle options: +/-6 degrees and +30 degrees.
In general, you'll find the +30 deg stem provides a more upright, comfort-oriented fit, whereas the +/-6 deg stem puts you in a more performance-oriented riding position (standard for a typical road bike).
The +/-6 deg ShockStop can be flipped so that it's angled slightly upward (+6 deg) or slightly downward (-6 deg). The +30 deg ShockStop should only be installed in the angled upward position.
Stem Length
If you chose the +30 deg ShockStop, you will need to choose either the 80mm or 100mm length option.
If you chose the +/-6 deg ShockStop, then you will need to choose one of 5 different length options:
- 80mm = 3.2 inches
- 90 mm = 3.5 inches
- 100 mm = 3.9 inches
- 110 mm = 4.3 inches
- 120 mm = 4.7 inches
Here's some guidance on the length selection:
1) If you are replacing an existing stem and want to match it, then start by seeing if the length is printed on the stem. Choose the length of ShockStop that most closely matches your existing stem's length. If the length is not printed on the stem then go to #2.
2) You can measure the length of your existing stem as shown in the following picture. The length is measured from the center of the handlebar to the center of the steerer tube.
3) Once you determine the length of your existing stem round to the nearest 10 mm and choose the closest match.
4) If you are unable to measure the length of your existing stem then choose 90 mm. This is one of the most common lengths and tends to be a good fit for most people.
Redshift trusted by
200,000+
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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!
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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.
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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
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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.
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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.
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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.
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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.
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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.
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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
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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.
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