Thule Yepp Mini Baby Seat Ahead Adapter

The Thule Yepp Front Adapter (also called the Ahead adapter) is the mounting bracket that holds a Thule front child bike seat on bikes with an Ahead (threadless) stem, the type found on most modern bikes. The adapter that comes with a Yepp Mini seat isn't the Ahead type, so if your bike has an Ahead stem, you'll need this one. It's also how you move one seat between two bikes.

Do I need the Thule Yepp Front Adapter?

You need it if either of these applies:

• Your bike has an Ahead (threadless) stem. The stem clamps around the fork steerer above the headset, usually with spacers underneath. Most adult bikes made in the last 20 years or so have one, including most e-bikes.`
• You want to use one seat on two bikes. Fit an adapter to each bike, and the seat clicks off one bike and onto the other without tools. That's handy when two people take turns carrying your child.

The adapter also fits quill stems, the type that slides down inside the head tube on many older and classic bikes.

Which Thule seats does it fit?

It works with Thule's front-mounted child seats:

• Thule Yepp 2 Mini
• Thule Yepp Nexxt 2 Mini
• Thule Yepp Nexxt Mini

It doesn't fit Thule's rear child seats, which mount on a rear rack or the seat tube.

Will it fit my bike?

It suits stem and steerer diameters from 20mm to 28.6mm (0.87" to 1-1/8"). Most adult bikes with a standard 1-1/8" steerer are within that range. Check that the display and cables around your handlebar leave room for the seat, especially on an e-bike.

Specifications

• Model: Thule 12080403
• Fits: Ahead (threadless) and quill stems, 20 to 28.6mm diameter
• Compatible seats: Thule Yepp 2 Mini, Yepp Nexxt 2 Mini, Yepp Nexxt Mini
• Weight: 0.25kg
• Colour: Black

Frequently asked questions

Is the Thule Ahead adapter the same as the Yepp Front Adapter?

Yes. "Ahead" refers to the threadless stem type it fits. Thule now calls it the Yepp Front Adapter, and it fits quill stems too.

Does the Yepp Mini seat come with an Ahead adapter?

No. Yepp Mini seats come with an adapter, but not the Ahead type. If your bike has an Ahead (threadless) stem, buy this adapter as well.

How do I know if my bike has an Ahead stem?

Look where the stem meets the top of the frame. If the stem clamps around a tube with bolts on the side, and there's a top cap with a bolt in the centre, it's an Ahead stem. If the stem disappears down into the frame with one bolt on top, it's a quill stem.

Will the Yepp Front Adapter fit an e-bike?

It fits most e-bikes with an Ahead stem and a steerer between 20mm and 28.6mm. Check that the display and cables around your handlebar leave room for the seat.

Can I fit the adapter myself?

Yes. Thule designed it to be quick to install with basic tools. On an Ahead stem, follow Thule's instructions to make sure the stem and headset are tightened correctly afterwards.