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Fox Float Rear Shock Volume Spacer Kit

Item #: RS258Z01
In Stock
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Fox Float Rear Shock Volume Spacer Kit

Fox Float Volume Spacer Kit

Now you can easily change and tune your Fox RP shock with the Fox Float Volume Spacer Kit, you can change the spring rate on the air spring to suit your needs. The kit includes three plastic spacers that snap onto the shaft inside the air canister and 5ml packet of FOX Float Fluid. The spacers reduce the air volume of the air-spring chamber, causing the pressure to ramp up faster as the shock compresses. The volume changes for each spacer are, .2, .4 and .6 cubic inches, and installation can be done with a shock pump and a small screwdriver

4.6 / 5.0
33 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Amazing for tuning your shock
This little kit although expensive for 3 plastic pieces is great for tuning a fox Float.

My rear shock would blow through too much travel when hitting relatively small drops. I wanted to avoid adding to much psi as it negatively affected small bump compliance.

I added the medium spacer after watching a tutorial video and I am more than happy with the result.

I can now run my rear shock with low enough pressure to run like butter over the fast small bumps, but it ramps up nicely on bigger hits so that I am no longer bottoming out when at low psi. In fact I don't feel so bad hitting the larger bumps and drops I used to on my coil shocks, almost impossible to bottom out now even on the big stuff.

The install is simple, if you do a search for "Fox volume spacer kit" you'll have all the info you need. No need to take it to a shop, and even if you do, its a 5 minute job.

PROS: Easy Install

CONS: none
November 1, 2012
Seattle, wa
Must Have To Eliminate Blowing Thru Trav
Quick transaction. Like New.

PROS: Good Quality

CONS: none

BEST USES: Rocky Mt Slayer, Rp23 High Volume
February 3, 2014
Portland, OR
Fits the new Fox/Trek REaktiv Shock
I was told by Fox that this was the correct volume spacer kit for the new 2016 Fox/Trek REaktiv shock on my Fuel EX 29er. When I received the kit I noticed there are different size spacers ... the kit contains spacers for different versions and sizes of the Fox Float shock. The 2016 REaktiv comes with no spacers so I installed the smallest one from the kit. It was just the change I was looking for. I'm glad I made the purchase.
June 3, 2016
San Diego, CA
Keeps me from bottoming out... and that's the point
Using these with a Float DPS Factory rear shock on a Pivot 429 Trail. When the air pressure and sag were set correctly, I was bottoming out on big and even not-so-big hits. I swapped in a larger spacer from this kit, which was easy to do with the instructions online, and not more bottoming. There's now a nice progression in spring rate over the last 1/4 or so of the travel, but I can't tell any difference in the feel earlier in the stroke. It's coming close to bottoming on a really big hit, so I'm sure it still will on a particularly strong impact, which is what I want.
October 17, 2016
San Mateo, CA
Does what they should
These do just what they should by letting you run lower air pressure in your shock without it bottoming. Installation is a breez and takes 5-10 minutes.
fox should incluse the chart with this kit that has the list of shocks that should not use certain size spacers for risk of shocks failing due to sudden pressure spikes. People should check their website

PROS: Easy Install, Helps Run Low Pressure

CONS: No instructions
May 20, 2014
Tempe, AZ
Easy Peasy
Very easy and quick to swap out sizes to increase or decrease air shock ramp up.

PROS: Quick easy

CONS: Expensive Chunk O Plastic
January 9, 2014
This spacer kit gives you options
This kit gives you three suspension options that you can notice, and it's very easy to install/replace.
May 6, 2014
San Diego, CA
Best upgrade to Fox Float!
This is the BEST upgrade to a Fox Float short of a full custom re-valve. I was able to drop my air pressure 15-lbs an stopped the constant bottoming. I HIGHLY suggest these volume control spacers to heavier or faster riders!

PROS: Easy To Install
February 8, 2016
Colorado mountains
So cheap you sometimes ignore
my stock ibis mojo hd frequently bottoms out. with this installed, no more bottom out and at the same time i can lower the pressure of my rp23 making it more plush.

PROS: No More Bottom Out, cheap, Lower Pressure, Sensitive To Low Bumps

CONS: Not free

BEST USES: Ibis Mojo Hd, all mountain
December 10, 2012
Paranaque Philippines
Fox Volume Reducer Review
As advertised. Great Product. It snapped into place with no fitment issues
April 24, 2017
6 months ago

Q & A

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Browse 9 questions Browse 9 questions and 11 answers
What are the fox part numbers for these spacers? Will they work for a 2016 float dps shock?
NIKKO on May 21, 2016
Kit for CTD fits DPS, correct?
Andrea on May 20, 2016
BEST ANSWER: Yes, it does work
I cannot figure out which sku (if any) works with the Fox Float RL rear shock. Does any one know?
Robert on Aug 9, 2016
Will all the spacer fit the small eyelet version of the fox ctd evolution? If not, what is the maximum size that will accept my shock?
Daniel on Sep 14, 2016
BEST ANSWER: You would need to check the fox website.
They have a chart that shows which volume spacers are compatible with which air cans, since you could potentially have a dangerous over-pressure situation if you use too large of a spacer with too small of an air can.
Sent from my iPhone
I have the 2014 fox float x ctd on my trance sx. Which selection to select?
A shopper on May 18, 2017
BEST ANSWER: Hi. I looked for the shock serial number, went to fox website to look for shock details to choose correctly. Serial number is very visible on shock labels and its a combination of letters and numbers.
will this work with 2017 fox float DPS?
A shopper on Jul 12, 2017
BEST ANSWER: I would think it would. Worked with the float rp23. I noticed a slight improvement with the rest shock with the inserts. You can use less air pressure and that helps with breaking bumps and stuff.
Which spacer kit number do I need to purchase for use in my RP23 shock?
A shopper on Sep 26, 2017
BEST ANSWER: The kit that you need is this one: kit: PN 803-00-612
is the volume spacer kit suitable for 2017 float x evol?
A shopper on Aug 22, 2017
BEST ANSWER: No it is not. The float X evol has a different shaft diameter. Additionally, the evol can limits sizing up the spacer that comes installed already.
I have a 2018 Giant Trance 2, will this work with the rear shock that is OEM on my bike?
Brian c on Aug 3, 2017

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.