It’s all about the details

Give your ride wings in 3 easy steps!

With the new LSD door hinges the door is opened outwards as usual. Then it can be opened easily upwards with the support of the gas spring. Because of an exactly adjustable mechanism this action is secured. Closing the door in the opposite way is also secured and uncomplicated due to the patent pending "Magic Stick™" technology. The "Magic Stick™" secures itself into the socket and stops the door from dropping any further from the closing position. It is centering and adjusting the door before it will be locked in the original door lock.

LSD Doors in Detail

All LSD-Doors fittings "Made in Germany" are impressive due to their 3-dimensional adjustment, the simple assembly into original bolt holes and its perfect fitting accuracy. With guided roller system (GRS) a precise opening and closing of the door is guaranteed. By means of a roller, the swing arm of the LSD hinge over the entire path of movement is a guided fix. Tailored to suit the door weight, the gas pressure spring holds the fully open door in position. In everyday life, proved: By the LSD hinges the doors open first, up to an angle of 30°, around the vertical axis of the C-profile, then it can be opened easily upward with the support of the gas spring. Because of an exactly adjustable mechanism, this action is secured.

  1. Base plate and pivot arm
    • Laser cut from high-strength steel
    • Defined Oblong holes for height and depth adjustment (part of the three-dimensional door adjustment)
    • Galvanized surface finish
  2. M.A.R.A. Technology - Multiple - Axis - Rotational - Assembly (Adjustable aluminum Swivel connection in C-Form)
    • The (C-profile) aluminum pivot arm connection attached to the base plate can be repositioned in a longitudinal direction and is the replacement for the standard door hinge series.
    • The door first opens out as usual, up to an angle of 30°, around the vertical axis of the C-profile (depending on the vehicle model).
    • In the CNC machined pivot bearing seat there is a special ball bearing in the horizontal axis, by means of which the door is then pivoted upward in LSD style.
  3. GRS (Guided Roller System)
    • The applications LSD Doors GRS + (Guided Roller System) ensure that the entire motion sequence of the pivot arm is guided in every position by the 2 dimensional adjustment option of the roller bearing, in order to guarantee the precise opening and closing of the door. In addition to the guided roller system a locking device on the top which locks the pivot arm into position. This upper adjustment guarantees an additional stabilization of the opened door.
    • The applications LSD GRS (Guided Roller System) ensure that the entire motion sequence of the pivot arm is guided in every position by the 2-dimensional adjustment option of the roller bearing, in order to guarantee the precise opening and closing of the door.
  4. Patented safety locking system for side impacts
    • When the door is closed to the original lock, an interlocking connection is created between the LSD base plate and the pivot arm.
  5. "Magic Stick™" technology
    • When the door is closed, at the end of the downward motion the "Magic Stick™" positions itself in a vertically aligned, sound absorbing polyamide seat.
    • The stabilizer can be adjusted in length to adapt to the 3-dimensional adjustment options.
    • The seating for the stabilizer has the necessary depth adjustment, ensuring that the door is also neatly closed and airtight.
  6. Vehicle Gas Spring
    • Details for gas spring see Fig. below.
LSD Basic
With guided roller system,
indicated by reference X.
With guided roller system and upper locking device, indicated by reference Z.
The information which application is available with which system you find in our delivery program.

LSD gas springs in Detail

What you can expect from an LSD-gas pressure spring

For each application, a specially tuned gas pressure spring is developed, which supports the movement of the door when opening and closing, thus reducing the effort. A LSD gas spring works in practice by the same basic principles as a vehicle shock absorber - but with one crucial difference: It is the outdoor temperature *.

It is, for example, in summer much easier to open a trunk lid as in the winter. The reduction of outside temperature cools the nitrogen inside the damping chamber, which can be "viscous" gas and reduces the force of the gas spring. In the summer, it is the opposite. The gas spring is designed individually for each vehicle-specific solution. At elevated or reduced weight of the door, such as due to additional equipment or subsequently been fitted with accessories such as Speakers, and replacement of the liner by example lighter carbon fiber covers, etc., it may be necessary to have to use a stronger or weaker gas spring. These can be ordered separately when LSD-base partner.

* Each vehicle has been tested with a specially tuned gas pressure spring. Condition were original weight of the standard door and a room temperature of about 20 ° C. Please note that gas springs increasing by temperature fluctuations in the force and can decrease, resulting in the opening and closing forces vary.

Safetyback to selection

Side impact test for LSD Style doors
provides impressive proof of safety

The side crash test experiment has proved it: The patented LSD wing door hinge system offers the best possible safety in a lateral impact. The test was conducted in accordance with the directives applicable to car manufacturers, ECE- R 95, and EU directive 96/27/EEC. The DEKRA Accident Research and Crash Test Centre and has confirmed: The equipment of a vehicle with LSD wing doors provides the required protection and guarantees optimum safety for the occupants. The maximum allowable load values for occupant dummies are even lower.

Optimum safety for the occupants

Impressively illustrated the side crash test experiment, the extreme stresses to which components and occupants are exposed. In the side impact test, which is performed according to the guidelines, which accelerates a moving barrier at 50 mph. Then you let this barrier side impact against the driver's side. "At the wheel" sits with a sensor equipped and connected to measuring instruments dummy type Euro - first SID; the doors did not open during the impact.

Easy occupant rescue

The rescue of the occupants also satisfied the EU directive to its full extent. The recovery by the passenger door could be made easily and without tools. On the driver‘s side it was still possible to swing the door open in an upward direction, as a result of the LSD hinge mechanism. This means that in the event of a serious accident it would be possible to effect the rescue of the occupants even more swiftly.

"Made in Germany" Quality

In contrast to other retrofit kits for Lambo Style Doors, the LSD door fittings, ‘Made in Germany’, are impressive due to their highly developed technology and the highest possible quality standards.

Scope of deliveryback to selection

Included in delivery:

  • Two completely pre-assembled LSD hinges including gas springs,
  • complete installation and attachment materials
  • cable extension and insulated cable ties,
  • waterproof insulating tape
  • cable clips
  • comprehensive installation instructions
  • TÜV parts certificates

Installationback to selection

Installation Basics shown on Nissan 350Z:

Step 1:
Disassemble the swing arm from the chassis plate.
Step 2:
Remove factory door hinge from a pillar and install the LSD chassis plate into original Bolt holes.
Step 3:
Remove factory hinge from door and bolt on LSD swing arm.
Step 4:
Extend your wire harness (if necessary) with supplied extension kit then mate and bolt the swing arm to the LSD chassis plate.
Step 5:
Mount the gas damper and adjust the door to finalize the install.

Development & Productionback to selection

Within the structures of KW automotive GmbH, the highly experienced LSD engineers have at their disposal all the CAD design and simulation modules, as well as equipment for the necessary experiments and tests on the newly designed solutions.

The door fittings designed on the vehicle and on the computer are produced by the latest high-tech machines, and are subjected to a strict testing process before the components are assembled and carefully packaged, and the finished products leave the modern factory.

CAD development dep.
Our experienced engineers design the unique LSD door fittings on 3D CAD systems.
CAD simulation
The loads and stresses that occur can be simulated on the computer, and the fittings can be appropriately modified and strengthened.
Tensile force comparison
The strength of the fittings simulated on the computer is checked on the test rig in a tensile strength test in compliance with ECE directives.
Installation experiments on the vehicle are an essential requirement to ensure optimum functionality of the vehicle-specific solutions.
Laser cutting machine
CAD data are used to cut the steel components of the LSD door fittings from high-strength materials, on high-precision, state-of-the art CNC laser cutting machines.
After cutting, all welding parts are welded in our own welding shop.
After welding, the LSD hinges will be powder-coated in our state-of-art coating plant.
The nickel-plated fittings and sub-assemblies are assembled, pre-adjusted and tested to ensure that they work properly.
The door fittings, associated accessories and documentation are foam packed. This enables safe and secure transportation.
State-of-the-art logistic procedures ensure that the products pass through all the elements of the production process as quickly as possible, and normally leave the plant on the day of the order.