Head to head
Ifor Williams CT136HD vs Ifor Williams HB510XL
The Ifor Williams CT136HD is 780kg lighter empty and is 10cm wider inside. The Ifor Williams HB510XL is rated 900kg heavier gross and is 25cm longer inside.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HB510XL weighs 780kg more empty.
- Gross weight: the Ifor Williams HB510XL is rated 900kg heavier gross.
- Internal length: the Ifor Williams HB510XL is 25cm longer inside.
- Internal width: the Ifor Williams CT136HD is 10cm wider inside.
Specifications side by side
| Ifor Williams CT136HD | Ifor Williams HB510XL | |
|---|---|---|
| Gross weight | 2,600kg | 3500kg |
| Unladen weight | 510kg | 1290kg |
| Internal length | 4.0m | 4.25m |
| Internal width | 1.84m | 1.74m |
| Payload | - | 2210kg |
Sources: Ifor Williams CT136HD, Ifor Williams HB510XL. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the CT136HD if...
- you want one that is 780kg lighter empty
- you want one that is 10cm wider inside
The CT136HD suits recovery operators, racers and dealers who need a tougher car transporter than the standard CT136, thanks to its heavy-duty beam axles and multi-leaf suspension. Its 4.0m bed and 2.6 tonne gross weight cover most road cars without the cost of a beavertail trailer.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Buy or hire the HB510XL if...
- you want one that is rated 900kg heavier gross
- you want one that is 25cm longer inside
For owners of taller or longer horses who find the standard HB511 too tight, giving extra internal length on the same 3500kg chassis so it stays towable by a suitably rated 4x4.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Common questions
What is the difference between the Ifor Williams CT136HD and the Ifor Williams HB510XL?
The Ifor Williams CT136HD is 780kg lighter empty and is 10cm wider inside. The Ifor Williams HB510XL is rated 900kg heavier gross and is 25cm longer inside. The Ifor Williams CT136HD is a ifor Williams' heavy-duty twin-axle car transporter trailer in the CT136 range, built for moving a single vehicle.; the Ifor Williams HB510XL is a an extra-length double horsebox trailer.
Which is lighter, the Ifor Williams CT136HD or the Ifor Williams HB510XL?
The Ifor Williams CT136HD. It is 780kg lighter empty than the Ifor Williams HB510XL.
Can I tow the Ifor Williams CT136HD or the Ifor Williams HB510XL on a car licence?
Yes, as far as the licence goes. Both are rated at or under 3,500kg gross, and a car (B) licence has covered towing up to 3,500kg since 16 December 2021. Your car still has to be rated to tow the loaded weight - check the handbook or the VIN plate.
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