Mavic MTB Wheels – which axle adaptors do I need ?
This is a very popular topic !
The two fundamental steps in determing the correct adaptors are ;
(1) Know which wheels you have – that is the exact model and model year
(2) Know what the current and target axle / hub configuration is.
Lets start with identifying your wheels. The key to this is the serial number which is located on the rim near the valve. (There is no need to remove the tyre )
Depending on the age of the wheel, the serial number will be either a barcode (typically on wheels pre 2018) or etched on the wheel. Examples below.
Sometimes , particularly on older wheels, the serial number is illegible. If you have a matching wheelset, then check the other wheel , if that is legible then you can use that (we are just trying to identify the wheel model and model year as a key to getting the build details from the Mavic Support site so either serial number is fine for this purpose)
If both serial numbers are illegible (or you cannot find the serial numbers) drop us a query on the Mavic Tech Forum. We check this daily.
Okay so once we have the serial number the next step is to input this into the Mavic Tech Site
This should then provide an exploded diagram showing the build specification of the wheels.
We need to obtain the model year of the wheels – to do this click the “Download PDF” link (arrowed in image below), this will open up the relevant page in the technical documentation with the model year in the top right hand corner (arrowed in image below)
So in the example above we have identified the wheel as a 2021 Mavic E-Deemax S 30 29 Front Wheel
If we look at the exploded diagram in more detail (image below) we can see that this Front Wheel is available in two configurations ; either a 15x110mm Boost axle or a 20x110mm Boost axle.
The red arrows point to the two axle/hub configurations, and the corresponding different axle part numbers are arrowed in blue.
For our example we will assume we have a 15x110mm axle and we want to convert it to run on another bike with forks that require a 20mm Boost axle.
Other typical configurations for Mavics MTB Wheels are ;
Front (Non Boost) : 15x100mm, 20x110mm or 9x100mm QR
Rear (Non Boost) : 12x142mm, 12x150mm, 12x135mm, 12x157mm or 9×135 QR
Front (Boost ) : 15x110mm, 20x110mm, 9x110mm QR or Torque Caps
Rear (Boost ) : 12x148mm, 12x157mm, 12x150mm or 9x141mm QR
Again for some configurations you will also need to know where the discs are 6-Bolt or Centrelock.
For our worked example we will assume ours are 6-Bolt.
Okay so once we have that information we can use the Mavic Technical Documentation to determine what we need.
MTB Wheel Adaptors – Mavic Documentation Here
Lets take our example…
So we have identified our wheel as a 2021 E-Deemax S 30 29 Front wheel with a 15x110mm Boost hub.
Our target configuration is to use the wheels in another frame with a fork that requires a 20x110mm axle
So we refer to the Mavic Documentation (image below) , scroll down to the section for Front Wheel Boost, checking the date range and wheel models.
We are running a 6-Bolt hub.
We can thus determine that to convert to 20x110mm Boost we need to remove the default 12982801 adaptors, and replace them with V2690401
There are a few points worth noting when referencing the Mavic MTB Wheels Adaptor Document ;
(1) Use the “Looks Like” column to confirm your wheel model hub. This is particularly important if the wheel is circa 2017 / 2018 as Mavic made rolling spec changes across this timeframe, so you should do a visual check.
(2) Make sure you reference the correct Boost or Non Boost section !
As always if you are not sure what adaptors you need, or just want a sanity check, drop us a query on the Mavic Tech Forum. We check it daily.