OXTAIL Bicycle Trailers

The trailer for your next adventure

We've been making trailers here in Portugal since 2007. Each one is hand-built with our double-action suspension system. Rugged, reliable, and maintenance free.

20+ Years experience
6.5 kg Trailer weight
PT Made in Portugal

Our Trailers

We make two models. Both are designed for rough terrain.

OX1 bicycle trailer The Original

OX1

Available since 2007

We have been making the OX1 since 2007. It was designed for long overland expeditions, to be strong, maintenance free and totally reliable.

from €350

Free shipping in Europe

  • Double-action suspension system
  • Instant fold for transport and storage
  • Steel construction, maintenance free
  • Weight: 6.5 kg
  • 20" aluminium rim, 48-spoke wheel
  • Tyre: 20 x 1.95
  • Load area: 50 cm x 35 cm
  • Folded: 77 cm x 40 cm x 66 cm
  • Standard hitch fits 25–30 mm seat posts
  • Oversized hitch available for 30–35 mm
Order OX1
EX1 bicycle trailer The Expandable

EX1

Compact to large in seconds

The EX1 has the same features as the OX1, but was designed to transform from compact to large. To carry a larger load, just increase the length of the trailer.

from €495

Free shipping in Europe

  • Double-action suspension system
  • Instant fold for transport and storage
  • Steel construction, maintenance free
  • Weight: 8.2 kg
  • 20" aluminium rim, 48-spoke wheel
  • Tyre: 20 x 1.95
  • Load area: 51 cm x 36 cm — extends to 83 cm
  • Folded: 78 cm x 45 cm x 60 cm
  • Standard hitch fits 25–30 mm seat posts
  • Oversized hitch available for 30–35 mm
Order EX1

Engineered for the Trail

Built to be strong, reliable, and maintenance free.

Double-Action Suspension

Cushioned pivots absorb impacts vertically and horizontally, protecting both rider and load over the roughest terrain.

48-Spoke BMX Wheels

We use 20-inch wheels with 48 spokes. The high spoke count gives them the strength needed for expedition use.

One-Wheel Design

No wider than the bicycle. It works great both in traffic and on narrow trails where two-wheel trailers can't go.

Double-Action Suspension

Two cushioned pivots at the front and rear of the load carrying section. The rear pivot lets the wheel move up and down over uneven surfaces. The front pivot allows the trailer to stretch when it hits an obstacle, absorbing the impact and lifting the load over it.

Frequently Asked Questions

The load carrying section can be manufactured to your specific requirements, up to a maximum length of 75 cm. Extended trailers take up to 5 days before dispatch.
The EX1 has the same features as the OX1, but was designed to transform from compact to large. If you need to carry a larger load, increasing the width or height greatly increases the negative effect on the cycle and rider. To carry a larger load just increase the length of the trailer. The EX1 transforms from compact (50 cm) to large (82 cm).
For off-road use, two-wheel trailers are just not stable enough to be seriously considered. The axle needs to be much wider than the bicycle, which restricts the cycle in traffic and on narrow trails. And if one wheel strikes a large stone, the trailer will have a tendency to try and flip. Both of these problems are eliminated with a one-wheel design.
If your cycle has rear suspension, connecting a trailer to the rear axle will restrict the suspension action. It is more ideal if the trailer can benefit from the cycle's suspension, not hinder it. Connecting to the seat post also gives much better manoeuvrability off-road.
We use 20-inch aluminium rim wheels with 48 spokes. These are BMX wheels — the high spoke count is what gives them the strength to handle stunts. We choose them specifically for their exceptional toughness on rough terrain.
Delivery within Europe should take approximately 6 working days. For other continents, 7–14 working days. Extended trailers take up to 5 days before dispatch. All shipments include track and trace.
The standard hitch fits seat posts with 25–30 mm diameter. If your seat post is over 30 mm, we also supply an oversized hitch for 30–35 mm. Please let us know when ordering. Extra hitches are available for €50 if you want to share the trailer between bikes.
Yes, the trailer works with all standard wheel sizes including 29".

Any other questions? Please don't hesitate to get in touch.

Customer Reviews

I've done a travel with it and I've to say that's a VERY GOOD PRODUCT.
Yves
It was piled high at Glastonbury festival this year with peoples camping equipment - it moved through the crowds beautifully being no wider than the bike and coped with mud (sometimes up to its axle) - no problem. He got 24 eggs out of his rucksack with not a single breakage - nice suspension!! I love the trailer.
Dave Gough
Today I was riding for 30 km with the trailer and the dog. I must say I hardly noticed the trailer. I didn't imagine the cushioned pivots could work so well, but they worked great. The dog soon got used to it and fell asleep.
Regards
I found this trailer at the internet and I was instantly convinced that this is the trailer I was looking for. My wife and I are cycling with Brompton folding bikes, and this trailer is the completion.
A Brompton cyclist
Many people ask me about the trailer. Maybe you will have some orders from Vienna!
Andreas
Thanks for a superb trailer, it works a treat. My dog loves it.
Ian

See It in Action

From our historical archives.

Keep Reading

The Evolution of the OX1

The design story, from Paul Hilton.

Read more →

Basic Principles of Towing

Weight distribution, leverage, and centre of gravity.

Read more →