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Aftermarket vertical door conversions — better known as Lambo doors or scissor doors — all depend on the same hard-working component: the gas shocks that lift each door and hold it open. When those struts tire, the doors sag, drift back down, or refuse to stay up at all. Scopione stocks replacement shocks and fitting hardware only — not complete conversion kits — matched to most aftermarket vertical door setups: bolt-on and weld-on styles, three lengths, three thread sizes, and force ratings from 120 lbs to 1,000 lbs. This Lambo door shocks guide explains how the parts work, how to measure your originals, and exactly which replacement set to order. In a hurry? Browse the full Lambo Door Shocks collection.
How Vertical Door Kits Work — and Why Their Shocks Wear Out
A vertical door conversion replaces or modifies the factory door hinge so the door swings out slightly, then pivots upward. The muscle behind that motion is a gas shock (also called a gas strut or gas spring): a sealed cylinder of pressurized gas that extends with a controlled push, lifts the door through its arc, and then holds it open against its own weight.
Gas shocks are wear items. Their seals let pressure bleed off slowly over the years, and the fitting ends that connect them to the kit take a knock every time a door opens. The classic symptoms:
- The door will not stay fully open, or creeps back down on its own
- The door needs a shove to rise, or opens noticeably slower than it used to
- One door lifts strongly while the other feels weak
- Play or rattle at the shock ends — worn ball joints, bearings, or fittings
None of these calls for a new conversion kit. A matched replacement shock — and often a fresh set of fitting ends — restores the lift, and the swap is fully reversible. The photographs below are from our own listings: aftermarket vertical door kits doing what they should, with healthy struts holding the doors up.
Watch: The Replacement Shocks Up Close
The 45-second overview below shows the bolt-on and weld-on shocks and every fitting type we carry — screws, L-shape fitting joints, end caps, ball bearings, and swivel joints — along with the two facts to keep in mind before ordering: these parts fit most aftermarket bolt-on and weld-on kits, and you should always check dimensions and force rating against your originals first.
Bolt-On vs Weld-On: Which Shocks Does Your Kit Use?
Aftermarket vertical door kits come in two mechanical families, and their shocks are not interchangeable. Bolt-on kits — much the more common of the two in our range — use a stout strut with threaded studs on each end (M10 or M12), secured to the hinge assembly through fittings: L-shape joints, end caps, ball bearings, or swivel ball joints. Weld-on kits use a longer, slimmer strut with smaller M8 swivel-joint ends that mount to brackets welded to the hinge or frame.
The quickest way to tell them apart is to look at your existing shock’s ends and measure its body. Here is the full spec picture across the three families we stock:
| Spec | Bolt-on – 7¾″ | Bolt-on – 12¼″ (94–04 Mustang) | Weld-on – 19¼″ |
|---|---|---|---|
| Fully extended length | 7.75″ | 12.25″ | 19.25″ |
| Shock body diameter | 1 1/8″ | 1 1/8″ | 3/4″ |
| End thread | M10 x 1.50 or M12 x 1.75 | M12 x 1.75 | M8 |
| Rated compressed force | 500–1,000 lbs (10 ratings) | 500–1,000 lbs (10 ratings) | 120–320 lbs (9 ratings) |
| Lift angle | 75 degrees | 75 degrees | 90 degrees |
| Fits | Most aftermarket bolt-on kits | Most bolt-on kits for 94–04 Mustangs | Most aftermarket weld-on kits |
All three families share the same construction: a black glossy painted body for smooth, controlled, corrosion-resistant motion. Kits made for the 1994–2004 Ford Mustang typically run a longer strut, which is why we carry 12¼″ sets sized specifically for them.
Measure Before You Order: The Four Numbers That Matter
Replacement shocks are matched to your kit, not to your car. Four measurements, taken from one of your original shocks, identify the right set every time:
- Fully extended length — tip to tip with the door fully open. Our sets come in 7.75″, 12.25″, and 19.25″.
- Shock body diameter — the thickness of the main cylinder: 1 1/8″ on bolt-on struts, 3/4″ on weld-on struts.
- End thread pitch — the thread on the studs or fittings: M10 x 1.50, M12 x 1.75, or M8 for weld-on swivel ends.
- Rated compressed force — printed on the label of most struts, in pounds. Bolt-on sets run 500 to 1,000 lbs; weld-on sets run 120 to 320 lbs.
Then compare your originals against the photographs on the listing — every product page shows the shocks and each included fitting from multiple angles, with dimensions called out. Not sure of your dimensions? Photograph your original shocks next to a tape measure and send us the pictures or measurements before you buy — we’ll confirm the match.
Choosing the Force Rating
The force rating is the load the gas charge pushes back with when the shock is compressed — in plain terms, how heavy a door it can lift and hold. Door weight varies enormously between builds: a light coupe door with trimmed internals needs far less force than a full-glass, full-panel door carrying audio equipment. That is why our bolt-on sets are offered in ten ratings from 500 lbs to 1,000 lbs, and the weld-on set in nine ratings from 120 lbs to 320 lbs.
The rule is simple: match the rating of the shocks already in your kit. A rating that is too low lets the door creep down; one that is too high makes the door hard to pull back closed. If the label on your original has worn off, send us photos and measurements and we’ll help you narrow it down. Every set is sold as a single shock or a pair (the weld-on set also comes as a four-pack) — most owners replace both sides at once so the two doors lift evenly.
Know Your Fitting Ends
The shock is only half the story — the fitting ends connect it to the kit, and they wear too. Five types cover our range:
- L-shape fitting joints — right-angle brackets that join the shock stud to the hinge plate (M10 or M12).
- L fitting screws — the shouldered screws that secure L-shape fittings.
- End caps — cup-style ends that seat the shock into the kit (M10 or M12).
- End cap ball bearings — the bearing rings that let an end cap pivot smoothly.
- Swivel ball joints — articulating ball ends: M10 and M12 for bolt-on kits, M8 for weld-on kits.
Every type is pictured below with its dimensions; each image opens the individual fittings listing, where fittings are sold on their own in singles or pairs. If your shocks are tired too, the sets in the next section bundle the fittings with the struts.
Every Replacement Set We Carry, with Current Prices
Fifteen listings cover the whole family. Prices show the current store range from a single shock to a full set — open each listing for per-option pricing, force ratings, and photographs of every included fitting.
Bolt-On 7¾″ Sets — M12 x 1.75 (base set also in M10 x 1.50)
| Replacement set | Fitting ends included | Current price (single–pair) |
|---|---|---|
| Shocks only – M10 or M12 | — | $35–$70 |
| Shocks + end caps | End caps (1 per shock) | $45–$80 |
| Shocks + swivel ball joints | Swivel ball joints (1 per shock) | $45–$80 |
| Shocks + L fittings | L fittings (1 per shock) | $45–$80 |
| Shocks + end caps & bearings | End caps + ball bearings (2 per shock) | $40–$75 |
| Shocks + L fittings & screws | L fittings + screws (2 per shock) | $40–$75 |
| Shocks + L fittings & end caps | L fittings + end caps (2 per shock) | $40–$75 |
| Shocks + L fittings & ball joints | L fittings + swivel joints (2 per shock) | $45–$80 |
| Shocks + L fittings, screws & caps | L fittings + screws + end caps (3 per shock) | $45–$85 |
| Shocks + L fittings, screws & ball joints | L fittings + screws + swivel joints (3 per shock) | $50–$90 |
| Shocks + 8 fitting ends | Full fitting set: L fittings, screws, end caps, bearings (4 per shock) | $50–$100 |
Bolt-On 12¼″ Sets for the 94–04 Ford Mustang
| Replacement set | Fitting ends included | Current price (single–pair) |
|---|---|---|
| Mustang shocks only | — | $35–$70 |
| Mustang shocks + fittings | L fittings + swivel joints (2 per shock) | $45–$80 |
Weld-On 19¼″ Set — M8
| Replacement set | Fitting ends included | Current price (1, 2 or 4 shocks) |
|---|---|---|
| Weld-on shocks + swivel joint ends | Swivel joint ends (2 per shock) | $40–$110 |
Individual Fittings
| Listing | Covers | Current price (single–pair) |
|---|---|---|
| Fitting ends, sold individually | Swivel joints (M8/M10/M12), ball bearings, end caps (M10/M12), L fittings (M10/M12), L fitting screws | $10–$25 |
Every set below is pictured with its spec banner — thread pitch, extended length, and contents — and each image opens its listing:
Fitting Replacement Shocks: What to Expect
These are direct, spec-matched swaps for the shocks already in your kit — no drilling, no cutting, no modifications. A typical replacement looks like this:
- Open the door fully and support it completely — a helper or a padded prop. Never let the door’s weight rest on a shock you are about to remove.
- Unbolt or unclip the old shock and its fittings, keeping the hardware oriented so you can mirror the geometry.
- Fit the new fittings to the new shock to match your originals, then mount it and torque the fittings down.
- Cycle the door slowly a few times before trusting it at full lift.
Two honest notes from the listings themselves: no installation manual, tools, or mounting hardware are included — the sets contain the shocks and the fitting ends stated on each listing — and professional installation is advised. Vertical doors are heavy and awkward to support single-handed — if you are not comfortable working under a raised door, hand the job to a shop. And if you ever want to return the kit to its original shocks, the process is fully reversible.
Frequently Asked Questions
Lambo Door Shocks: Common Questions
What are Lambo doors?
Lambo doors — also called vertical doors or scissor doors — are doors that pivot upward instead of swinging outward, a style popularized by Lamborghini’s flagship supercars. On most cars the look comes from an aftermarket vertical door conversion kit that replaces the factory hinges. Gas shocks inside the kit lift each door and hold it open.
Does Scopione sell complete vertical door conversion kits?
No. Scopione sells replacement shocks and fitting hardware only — the parts of a conversion kit that wear out. If your kit’s doors sag or will not stay up, a matched replacement shock set restores them without replacing the kit itself.
How do I know which replacement door shock I need?
Take four measurements from one of your original shocks: fully extended length (7.75, 12.25, or 19.25 inches), body diameter (1 1/8 inch bolt-on, 3/4 inch weld-on), end thread pitch (M10 x 1.50, M12 x 1.75, or M8), and the rated compressed force printed on the strut. Then compare your originals to the listing photographs. If you are unsure, send us photos or measurements before you buy and we will confirm the match.
What is the difference between bolt-on and weld-on door shocks?
Bolt-on shocks have a 1 1/8-inch body, a 7.75-inch or 12.25-inch extended length, M10 or M12 threaded ends, a 75-degree lift angle, and ratings from 500 to 1,000 lbs of compressed force. Weld-on shocks are slimmer and longer — a 3/4-inch body, 19.25 inches extended, M8 swivel-joint ends, a 90-degree lift angle, and ratings from 120 to 320 lbs. They are not interchangeable, so match the type your kit uses.
Will these shocks fit my car?
The shocks are matched to your conversion kit, not to your car’s make or model. They fit most aftermarket bolt-on and weld-on vertical door kits — always confirm dimensions and force rating against your originals before ordering. The one vehicle-specific option is the 12.25-inch family, sized for vertical door kits on the 1994–2004 Ford Mustang.
Are installation instructions or tools included?
No — the sets include the shocks and the fitting ends stated on each listing, without a manual, tools, or extra mounting hardware. The parts are made as direct replacements for your kit’s originals, no modifications are needed, and professional installation is advised.
Do replacement door shocks ship free?
Yes — shipping is free anywhere in the USA, all states and territories, and Canada. Orders placed before 1 PM EST usually ship the same or next business day, and all in-stock orders ship within 3–5 business days at the latest.
Shop Lambo Door Shocks
Sagging doors are not a character flaw of vertical kits — they are a sign the gas struts have done their miles. Measure your originals, pick the matching set, and your doors will lift like the day the kit went on.
Shop the full Lambo Door Shocks collection at Scopione — every bolt-on and weld-on set above, plus individual fittings.
Questions before you order? Contact us with photos or measurements of your originals, or see our shipping & returns policies and general FAQ. For more from the Scopione library, our auto tuning guide covers the wider world of aftermarket customization.
Disclaimer: “Lambo doors” and “scissor doors” describe an aftermarket door-conversion style. Scopione’s vertical door shocks and fittings are universal replacement parts for aftermarket conversion kits and are not affiliated with any vehicle manufacturer. Photographs show Scopione replacement shocks and fittings, and cars fitted with aftermarket vertical door kits, and promotional imagery.