The Mini does not fit ALL types of bikes. Work out if the Mini will fit on your bike.
The Thule & Yepp Minis are a front mount kids bike seat (meaning your child and the bike seat are between you and the handlebars). A front bike seat is attached and mounted to your bike at the handlebar stem by one of 2 adaptors (mounting brackets).
For details and video… How to Attach A Mini
- Standard Adaptor (mounting bracket) sold with every Mini – Thule or Yepp
- A-Head Adaptor (mounting bracket) sold as part of the Yepp Mini/A-Head Combo
To work out which adaptor will work on your bike you need to understanding the SPACE that is available or can be made available on the handlebar stem of your bike
You also need to work out if you have room for the Mini and still be able to safely ride by understanding the SPACE between you & the handlebars
Please work through both 1 & 2 to understand if a Front Bike Seat is the right solution for your family… OR choose to
Receive goRide’s personalised kids bike seat recommendation for your family. Use our Solution Finder. (For New Zealand residents only).
What SPACE is available on your handlebar stem?
The adaptors are rectangular so to identify if you have enough space you need to work out the size of your rectangle.
For the A-Head Adaptor to fit you need an uninterrupted rectangle of 5mm (h) x 85mm (l)
For the Standard Adaptor to fit you need an uninterrupted rectangle of 21 mm or more (h) x 70mm (l)
If the height of your rectangle is less than 5mm and you have a threadless stem (see below) the only way to gain space is to buy a stem extender or a completely new stem. Please consult a bike mechanic to see whether this is an option for your bike.
A-HEAD adaptor attached to a threadless handlebar stem (a spacer has been removed to expose 5mm of space).
STANDARD adaptor attached to a quill/threaded handlebar stem (the space available was greater than 21mm)
Find out which stem you have – threadless or quill handlebar stem. Then measure it!
- A Threadless handlebar stem – this type of stem is newer (more modern) and predominately found on ‘sport’ bikes. This stem clamps around the steerer tube. The only way to expose space on this type of handlebar stem is to remove spacers. (Spacers are generally 5mm or 10mm in height and look like rings wrapping around the stem).
Note: if you have spacers above the clamp you can re-organise the position of the clamp and spacers so that there is more exposed handlebar stem below the clamp.
For how to remove spacers: see How to attach a Mini
This type of stem is commonly found on mountain bikes
FOR A THREADLESS STEM
Measure the height of the rectangle that is available if you remove one or more spacers. Can you remove spacers to create a rectangle of either:
- 21mm (h) x 70mm (l) for the STANDARD ADAPTOR OR
- 5mm (h) x 85mm (l) for the A-HEAD ADAPTOR
This photo shows a spacer can be removed to create a rectangle with a height of 5mm to allow an uninterrupted rectangle (5mm x 85mm) for attachment of the A-Head Adaptor.
This stem also has a spacer (red) above the clamp. As mentioned above – the clamp and spacers can be re-organised on the stem to allow more space below the clamp for an adaptor to be attached.
- A Quill (also known as threaded) handlebar stem – you are looking for an older style stem on an older style bike. The stem will insert down into the steerer tube and be held in place by a nut & bolt. These types of stems are easily raised or lowered to vary height.
This type of stem is commonly found on town, urban, cargo bikes
FOR A QUILL STEM
Measure the height of the rectangle that is available or can be created (by loosening the nut to raise the handlebar stem). DO YOU HAVE A RECTANGLE OF 21mm (h) x 70mm (l) for the STANDARD ADAPTOR
This photo shows that this quill stem has a rectangle with a height of 21mm to allow an uninterrupted rectangle (21mm x 70mm) for attachment of the Standard Adaptor.
As this is a quill stem, it could be lengthened to more than 21mm if there was not enough space available.
Important: Most handlebar stems have a “minimum insertion” mark that shows how high they may safely be set. If you can see this mark, the stem is too high meaning you need more of the stem down in the tube. If your stem doesn’t have such a mark, a good rule of thumb is that there should be at least 2 inches/50 mm of stem inside the tube.
You should now know which adaptor you need. A-Head or Standard?
Do you have enough SPACE between you & the handlebars for a Mini?
The space you need is different depending on the adaptor used. Did you need an A-Head or Standard Adaptor?
Using the A-Head Adaptor
When the Yepp Mini is mounted on an A-Head adaptor you will need 43cm or more (the A-Head adaptor mounts the seat in a more reclined position.)
Yepp Mini mounted onto A-HEAD adaptor
Using the Standard Adaptor
When the Thule Mini Nexxt is mounted on using the the standard adaptor you will need 28cm or more
Thule Mini Nexxt mounted onto STANDARD adaptor
YOUR RIDING POSITION
Do you have enough SPACE? The amount of space that you will have available depends on your riding position and the size of your bike frame. Are you upright or in a lean forward riding position?
Leaning forward position
As your body position moves forward you have less space available for the Yepp Mini. Generally mountain styled bikes position the rider at a 65 to 45 degree angle to the bike seat.
How much space do you have between your chest and the handlebar stem? Do you have enough? (Remember the space you need will depend on the adaptor used).
If this is your riding position – to have enough space you will most likely need a bike frame that is medium in size or bigger. That is a frame size of at least 53-54cm or 16 inches or more (medium frames suit a rider of 168-178cm in height).
To measure the size of your bike frame place your tape measure between the centre of the crank, up to the top of your seat tube (do not measure any of your seat post).
Generally riding town style bikes…think cruisers, retro or cargo bikes where the rider is sitting at an 85 to 90 degree angle to the bike seat. This straight back creates lots of room between you & the handlebars.
How much space do you have between your chest and the handlebar stem? Do you have enough space? (Remember the space you need will depend on the adaptor used).