Di2 Battery Holder for 27.2mm diameter ShockStop Seatpost
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Description
This kit is for mounting your Di2 battery inside your ShockStop Endurance Seatpost or ShockStop PRO Endurance Seatpost securely.
If you have the ShockStop "PRO Race", you do NOT need this kit because any Di2 seatpost adapter will work in the "PRO Race" version. If you have the standard ShockStop "Endurance" or "PRO Endurance" post then this kit will work but it is only compatible with the 27.2mm diameter x 350mm size.
What's in the Box:
- Includes O-rings to secure your DI2 battery inside the ShockStop seatpost
- Includes hollow spacer and endcap to swap out current spring spacer inside the ShockStop seatpost
Technical Specifications
Contents | Two - O-rings and a Hollow Spacer Tube |
Instructions
Download Instructions (PDF):
Instructions - Di2 Mounting for 350mm ShockStop Seatpost
Shipping Info
90 day risk free trial & returns



Redshift trusted by
200,000+
- roadies
- gravel grinders
- commuters
- adventurers
- weekend warriors
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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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