Will this fit my bike?

It fits bikes with a 12mm rear thru-axle of the matching length and thread pitch. Check your current axle's length and pitch before ordering, since there is no adjustable version.

Do I need this to tow a Coho XC?

Yes, if your bike has a thru-axle. The Coho XC hitch attaches to this axle; bikes with quick-release dropouts use a different Burley hitch.

Is it worth the price?

If you already own a Coho XC and a thru-axle bike, it is the part that makes towing possible, so most owners consider it necessary rather than optional.

Can I leave it on the bike when not towing?

Yes. It replaces your rear axle permanently, and the hitch mount stays on the bike until you remove it.

Does it work with other Burley trailers?

No. It is made for the Coho XC cargo trailer, not Burley's kid or pet trailers.

Burley Ballz Thru Axle

Last price we saw

$59.99at DICK'S Sporting Goods, last seen Nov 2

Prices change often: ask the agent below to check today's price at every store.

Prices are checked against each store and labelled with when.

Ask our shopping agent

Our take on the Burley Ballz Thru Axle

The Burley Ballz Thru Axle is a replacement rear axle that lets a bike with a 12mm thru-axle frame tow a Burley Coho XC cargo trailer. It replaces the stock axle and adds the Ballz hitch mount the trailer's arm clips onto. It is a single-purpose part, so it only matters if you own a Coho XC and a thru-axle bike. It is a low-cost accessory compared with the trailer itself.

Best forCoho XC owners with a 12mm thru-axle bikeBikepackers towing cargo on modern mountain and gravel bikesRiders who want a clean, frame-mounted hitch instead of a clamp

Pros

Direct bolt-on replacement for the stock rear axle
Keeps the hitch load on the axle, not the frame
Simple install with standard tools
Works with the Coho XC's quick-release hitch arm

Cons

Only fits 12mm thru-axles; no quick-release or 15mm option
Trailer-specific: useless without a Coho XC

Burley Ballz Thru Axle prices at every store

DICK'S Sporting GoodsCheck price at DICK'S Sporting Goods

Burley Ballz Thru Axle price history

Lowest price we've seen: $59.99 on Nov 2 at DICK'S Sporting Goods. Tracked across 1 store since Nov 2.

What reviewers say

Owners of the Coho XC generally treat the Ballz axle as the correct, sturdy way to attach the trailer to a thru-axle bike. Complaints center on fitment: buyers who order the wrong length or thread pitch find it will not install.

Pros

Solid, wobble-free hitch connection
Straightforward swap for the stock axle
Holds up to loaded cargo use

Cons

Easy to order the wrong size
Heavier than the axle it replaces
Price feels high for a single axle

Specifications

Typical Use Cases: Hitching a bike to a Coho XC cargo trailer
Attachment Point

Questions and answers

Will this fit my bike?: It fits bikes with a 12mm rear thru-axle of the matching length and thread pitch. Check your current axle's length and pitch before ordering, since there is no adjustable version.
Do I need this to tow a Coho XC?: Yes, if your bike has a thru-axle. The Coho XC hitch attaches to this axle; bikes with quick-release dropouts use a different Burley hitch.
Is it worth the price?: If you already own a Coho XC and a thru-axle bike, it is the part that makes towing possible, so most owners consider it necessary rather than optional.
Can I leave it on the bike when not towing?: Yes. It replaces your rear axle permanently, and the hitch mount stays on the bike until you remove it.
Does it work with other Burley trailers?: No. It is made for the Coho XC cargo trailer, not Burley's kid or pet trailers.