Defender Ladder Guide: Rear Door vs Side Access Roof Ladder for the L663
NinthXLoaded a roof rack, then realised you had no safe way to reach it? That is the moment most L663 owners start pricing a Defender ladder. Two very different designs solve it, and the wrong pick either blocks your rear door or leaves you scrambling up a tyre. This guide compares the rear door ladder against the side access roof ladder so you buy the right one once.
📌 Quick Summary
A Defender ladder gives safe, permanent access to a loaded roof rack. Rear door ladders mount to the tailgate for straight-up climbs; side access ladders bolt to the body panel behind the rear door for a cleaner, out-of-the-way climb.
Key takeaways:
- Rear Door Ladder (£322): best if your gear lives at the back and you load from the tailgate
- Side Access Roof Ladder (£413): best for roof tents, awnings and frequent roof-top access
- Budget range: £322 for the rear ladder to £413 for the side ladder; around £735 to run both zones
- Fitment: both fit the Defender L663 90, 110 and 130 built 2020 to 2025
- The deciding question: where do you actually climb from, the rear door or the side?
Disclosure: NinthX sells these products on our own store, and we profit from purchases made through the links here. Treat this as a buyer's guide from a shop that stocks the parts, not an independent lab test. Prices are UK retail and current at publication.
What Is a Defender Ladder Actually For?
A Defender ladder is a fixed aluminium climbing frame that bolts to the rear door or the rear body panel, giving you footed access to a roof rack, roof tent or crossbars. It replaces the unsafe habit of standing on a tyre or door sill to reach the roof.
On the L663 the roof sits high. Once a rack carries a tent or a set of traction boards, you cannot load or strap anything without a proper step up. A ladder turns the roof from an awkward reach into usable storage.
Land Rover offers its own deployable side steps as a factory option. Those are powered and pricier. A fixed bolt-on ladder is the simpler, always-ready alternative, and it doubles as a grab point when the roof is wet.
Rear Door Ladder or Side Access Ladder — Which Should You Choose?
Start with one question: where does your gear live? If you load from the tailgate, a rear door ladder puts the climb exactly where you are already standing. If you camp off the roof, a side ladder keeps the climb clear of the door you keep opening.
Here is how the two compare at a glance:
| Ladder | Price | Mounts to | Best for | Blocks rear door? |
|---|---|---|---|---|
| Rear Door Ladder | £322 | Tailgate | Loading gear from the back | Climbs with the door |
| Side Access Roof Ladder | £413 | Rear side body panel | Roof tents, frequent roof access | No, stays clear |
The side ladder costs about £91 more than the rear ladder. That gap buys you a climb that never moves with the door, which matters if you open the tailgate constantly at camp.
We benchmarked the two side by side on fit, finish and how they carry a load. In our review the side mount felt the more stable underfoot once a roof platform was on, while the rear ladder was quicker to reach when unloading at the tailgate. In real-world use, that split is the whole decision: stability for camp, speed for the boot. In our experience fitting L663 access parts, the side ladder is the one we see ordered most often by roof-tent owners.
Rear Door Ladder for Defender L663
The Rear Door Ladder at £322 bolts to the tailgate and rises straight to the roofline. Because it travels with the door, you climb from wherever the door swings to. It pairs naturally with a rear-loaded setup and a boot cargo light for night access.
Full aluminium construction keeps the weight off the door hinges, and every unit ships with a two-year warranty. It is one of the most-ordered exterior parts in our L663 access range.
Buy this if: you load bikes, boxes or recovery gear from the tailgate, want the shortest path from ground to roof, and do not run a permanent roof tent.
Skip if: you camp off a roof tent and open the rear door dozens of times a day. A door-mounted climb gets in the way once the door is your main work zone.
Side Access Roof Ladder for Defender L663
The Side Access Roof Ladder at £413 bolts to the rear quarter panel behind the door. The climb stays fixed to the body, so the tailgate swings freely while you are up top pitching a tent or rolling an awning.
This is the overlander's choice. With a roof platform loaded, you want a stable, out-of-the-way climb you can trust in the dark and the wet. The side mount delivers exactly that.
Buy this if: you run a roof-top tent or awning, access the roof often, and want the rear door usable while you climb.
Skip if: your roof only sees the occasional kayak and your gear lives in the boot. The rear ladder does that job for £91 less.
Two Ways to Pay: Entry, Premium, or Both
Most L663 owners land in one of three tiers. Each is a complete access solution, not a random parts list. The price gap between the two ladders is £91. Both carry a two-year warranty.
Entry (£322): Rear Door Ladder only. Straight-up access for tailgate loading. The lowest-cost route to a safe climb.
Premium (£413): Side Access Roof Ladder only. The right base for a roof tent or an awning you open at every camp.
Both zones (around £735): Rear and side ladders together. Overkill for most, but it makes sense on a 130 running a rear rack for recovery gear and a roof platform for a tent.
Buy this if: you run a 130 with gear at both the tailgate and the roof, and you want dedicated access to each zone.
Skip if: you have a single load zone. One ladder does the job and saves you the second spend.
Cheaper rear ladders exist from other brands, some near £145. They trade material and finish for the lower price. Our ladders are full aluminium with a two-year warranty and sized specifically to the L663 body. Compared to a dealer-fitted deployable side step, both come in well under the OEM equivalent. If the fitment isn't right for your body style, our team will sort it before you buy.
How Does a Defender Ladder Install?
Both ladders are bolt-on jobs that use the vehicle's existing mounting zones. You are matching the ladder to marked points on the door or body, not cutting into the shell.
Here is the typical flow:
- Offer the ladder up and mark the fixing positions against the panel.
- Fit the supplied brackets to the door frame or rear quarter panel.
- Bolt the ladder to the brackets and torque to spec.
- Load-test with your own weight before you trust it with gear.
Most owners fit either ladder in an afternoon with hand tools. If you are not confident drilling to a panel, any 4x4 fitter can mount one quickly. Land Rover's own accessory fitting instructions show the same bolt-on principle for factory access parts.
Which Defenders Do These Ladders Fit?
Both ladders fit the current Defender L663 in 90, 110 and 130 body styles, model years 2020 to 2025. The side ladder is tuned to the longer body panels, so it suits the 110 and 130 especially well.
Per the manufacturer's fitment data, and from handling both units in our own warehouse, these are cut specifically for the L663 body rather than sold as a universal 4x4 bracket. That is why we list them against exact model years. The rear ladder is priced at £322 and the side ladder at £413. Run both and you are at roughly £735.
They do not fit the classic Defender (the pre-2020 shape). That platform uses different mounting points and needs a ladder built for it. If you are unsure which Defender you have, the Land Rover Defender (L663) reference covers the generation split, and Land Rover's official Defender pages confirm the current line-up.
Once the ladder is on, it opens up the rest of the roof. Pair it with a roof rack expedition basket or an exterior gear carrier box to turn the climb into real storage.
FAQ
What is the ladder on a Defender for?
A: It gives safe, permanent access to the roof. Once a roof rack carries a tent, boards or luggage, you need a fixed climb to load and strap gear rather than standing on a tyre or the door sill.
Why do Defenders have ladders?
A: The L663 has a tall roofline, and owners use the roof for tents, awnings and expedition gear. A ladder makes that space usable and safe. It also acts as a grab point when the roof is wet or icy.
Which Defender ladder is better, rear door or side access?
A: Neither is universally better; it depends on where you load. Rear door ladders (£322) suit tailgate loading. Side access ladders (£413) suit roof tents and keep the rear door clear while you climb.
Can you fit a ladder to a Defender 90?
A: Yes. Both the rear door and side access ladders fit the L663 90, 110 and 130 from 2020 to 2025. The 90's shorter body takes either, though rear-door access is the more common pick on the smaller wheelbase.
Do you have to drill to fit a Defender ladder?
A: Both ladders are bolt-on designs using the vehicle's mounting zones and supplied brackets. Some fixings need drilling to the panel. Most owners fit one in an afternoon, and any 4x4 shop can do it if you would rather not.
Do these ladders fit the classic Defender?
A: No. These are built for the current L663 (2020 onward). The classic Defender uses different body mounting points and needs a ladder made for that shape.
Ready to Reach Your Roof?
Pick by where you climb. If you load from the back, the Rear Door Ladder at £322 is the direct route. If you camp off the roof, the Side Access Roof Ladder at £413 keeps the door clear and the climb rock-solid.
Both are full aluminium, sized for the L663, and covered by a two-year warranty with shipping to the UK, EU and US.
View the Side Access Roof Ladder for Defender L663 → — in stock now, two-year warranty.
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The NinthX editorial team has fitted, tested, and shipped over 10,000 accessories for the Land Rover Defender L663 and Toyota Land Cruiser LC250 since 2023. Every review on this site is based on hands-on fitment, real-world owner feedback from our customer base, and (where stated) physical testing on our own vehicles.
