Head to head
Ifor Williams HB510XL vs Lider 39920
The Ifor Williams HB510XL is rated 2,750kg heavier gross and is 1.95m (6.5ft) longer inside. The Lider 39920 is 920kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams HB510XL is rated 2,750kg heavier gross.
- Unladen weight: the Ifor Williams HB510XL weighs 920kg more empty.
- Internal length: the Ifor Williams HB510XL is 1.95m (6.5ft) longer inside.
- Internal width: the Ifor Williams HB510XL is 39cm (1.5ft) wider inside.
Specifications side by side
| Ifor Williams HB510XL | Lider 39920 | |
|---|---|---|
| Gross weight | 3500kg | 750kg |
| Unladen weight | 1290kg | 370kg |
| Internal length | 4.25m | 230cm |
| Internal width | 1.74m | 135cm |
| Payload | 2210kg | - |
| Internal height | - | 157cm |
| Axles | - | 1 |
| Brakes | - | Unbraked |
Sources: Ifor Williams HB510XL, Lider 39920. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HB510XL if...
- you want one that is rated 2,750kg heavier gross
- you want one that is 1.95m (6.5ft) longer inside
- you want one that is 39cm (1.5ft) wider 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
Buy or hire the 39920 if...
- you want one that is 920kg lighter empty
The smallest box van in the range, for buyers who want lockable, weatherproof storage on the move without moving up to a braked twin-axle trailer.
Listed by
- Lider Trailers - Accrington, Blackburn
Common questions
What is the difference between the Ifor Williams HB510XL and the Lider 39920?
The Ifor Williams HB510XL is rated 2,750kg heavier gross and is 1.95m (6.5ft) longer inside. The Lider 39920 is 920kg lighter empty. The Ifor Williams HB510XL is a an extra-length double horsebox trailer; the Lider 39920 is a an unbraked single-axle enclosed box van trailer rated at 750kg gross weight..
Which is lighter, the Ifor Williams HB510XL or the Lider 39920?
The Lider 39920. It is 920kg lighter empty than the Ifor Williams HB510XL.
Can I tow the Ifor Williams HB510XL or the Lider 39920 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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