You will need to know what series of damper you have. This will be stamped on the body of the damper and are the first 2 or 4 digits (e.g. 26, 80, 8741 etc).

26 & 30 Series – Gas Mono Tube Dampers

1. Remove the dust cover if fitted and expose the adjusting button.
2. Hold the damper body by hand where the piston rod emerges from the cylinder. Push the button carefully, by hand, and hold it in that position. (Do not use any device other than by hand to depress button.)
3. The adjusting device has been provided with a number of clearly distinguishable stops (clicks), each of which marks an adjustment position (zero +2 clicks = 3 positions, 3 clicks = 4 positions).
4. The damper may have already been adjusted earlier. Therefore, check whether the damper is in the adjustment position by turning the piston rod to the left (counterclockwise) with the other hand until the zero-stop is felt – DO NOT USE FORCE!
5. To increase rebound, turn the piston rod one or more clicks to the right (clockwise), and release the adjusting button.
6. Be sure the adjusting button fully springs back into position. As long as the button is depressed, do not turn the piston rod further; otherwise correct adjustment will be disturbed. As soon as the button has made its complete return, the piston rod may be turned freely. The damper can now be refitted.

80, 82, 86, 87, 88, 90, 8040, 8240 Series – Twin Tube Compress to Adjust Dampers

1. Remove the damper from the vehicle and hold it vertically with the lower eye or pin attached in a vise. Use clamp plates to prevent damage.
2. Fully collapse the damper, at the same time turning the dust cap or piston rod slowly to the left (counterclockwise), until it is felt that the cams of the adjustment nut engage in the recesses of the foot valve assembly.
3. Some dampers include a bump rubber concealed under the dust cover and it must be removed prior to adjusting.
4. The damper may have already been adjusted. Therefore check whether the damper is in the adjustment position or not by keeping it collapsed and gently turning it further to the left counting the half turns until a stop is felt. Stop turning then and do not use force.
5. Keeping the damper collapsed, make 1 half turn (180 degrees) to the right (clockwise). In case of prior adjustment add the number of half turns previously found. The total range is 4 to 5 half turns.
6. Pull the damper out vertically without turning for at least 1 cm to disengage the adjusting mechanism. The dust cap or piston rod may now be turned freely.

8010, 8041, 8210, 8241, 8610, 8641, 8710, 8741 Series – Externally Adjustable

These dampers are the simplest in the range to adjust, literally at the turn of a knob. Place the supplied adjuster knob on the top of the damper and turn anti-clockwise to increase rebound force and clockwise to reduce rebound force. They can be adjusted in a matter of seconds, from a comfortable "touring" setting to a firmer setting for a sporty drive. There is usually 4–5 half turns of movement.

KONI has designed an ingenious method of installing inserts into sealed housings, allowing the use of performance dampers when they were previously unavailable.

It has become common practice for auto manufacturers to save money by using factory sealed strut housings rather than the traditional threaded closed housings. Whenever possible, KONI will make a complete strut housing damper but sometimes the necessary spring platforms and mounting brackets are unavailable or financially unfeasible. By designing the KONI Cut-A-Strut insert system, many vehicles with factory sealed struts now have performance damper options.

The installation requires only basic tools: a cutting device such as a hacksaw, grinder or pipe cutter to open the strut housing, as well as an electric drill. Generally, it takes an average of 15–20 minutes additional labour per corner over a traditional strut insert installation.

Although this is a fairly straightforward job for most qualified mechanics, we would suggest taking the car to a garage or workshop if you are unsure. KONI has been using this method very successfully for many years on numerous applications from Porsche to Ford, Honda to Hyundai.

KONI warrants all new shock absorbers to the original retail purchaser against defects in materials and workmanship (excluding mounting hardware and bushes) when used under normal operating conditions for a period of two years from the date of purchase. The vehicle on which the KONI shock absorbers were installed must be registered for road use.

This warranty does not apply to shock absorbers that have been:

1. Not purchased new by the current owner.
2. Modified or installed improperly.
3. Bottomed due to excessive lowering or damaged by bad road conditions (potholes etc).
4. Over adjusted.
5. Bent or broken indicating abuse.
6. Supplied as Original Equipment by the vehicle manufacturer.
7. Used on any vehicle modified for a use other than its originally intended use.
8. Used for an application not specified in the KONI application data.
9. Used on any vehicle for racing or other driving competition.
10. Exported for use outside of the EU.

In the event of defect, malfunction, or failure of the KONI shock absorbers to conform to this warranty, the original purchaser must contact the original supplying KONI dealer (with a copy of the purchase and details of the fault). The suspect unit will need to be returned with a completed warranty claim form to KONI. Upon verification of a genuine warranty fault, the unit will be repaired or replaced at no cost to the original user, or if a replacement has already been purchased, refunded.

KONI will not pay for the cost of the installation of the new or repaired shock absorbers.

This warranty is limited solely to the above. KONI will not be liable for any loss, damage, incidental or consequential damages of any kind based upon a warranty claim. KONI liability shall not in any case exceed the sale price for the product claimed to be defective or unsuitable.

KONI Heavy Track shock absorbers are designed to improve ride and handling characteristics for overall all-day use. Sizing of the original shock absorbers is respected and with the high quality components KONI uses, the durability is improved. KONI RAID is intended for heavy duty use. The additional technical features RAIDs have make sure the shocks will last through very demanding safaris, bush trips, pole expeditions, and so on. Capable of use in combination with heavy duty springs, RAIDs are often designed to cope with raised suspension.

KONI dampers are designed to fit standard height cars and can work with lowered cars as long as they don't bottom out internally and become damaged. Unlike some shocks, KONI's are not position sensitive so they will work properly anywhere in their stroke range providing they are not bottoming or topping out. A good rule of thumb is that most vehicles can be lowered acceptably about 30–35 mm; beyond that the possibility of bottoming increases rapidly. When lowering a vehicle be sure to reuse your bump stops as they are cheap insurance to avoid bottoming damage. Remember also that severely lowered vehicles typically have a negative effect on suspension geometry, ride quality, handling, and tyre and suspension part wear.

There is no single best adjustment setting because every driver has different preferences for comfort, performance modifications and roads to drive on. For most vehicles, we suggest that new KONI's be installed in the full soft position (the standard setting right out of the box) to take advantage of the balance of ride comfort and handling. If the car has performance upgrades (springs, wheel/tyre packages, etc.) or the driver wants a more aggressive feel, most people find the optimum setting in the ½ to one full turn from the full soft range. Over the extended life of the damper or if the driver wants a specific firm handling characteristic, the dampers can be adjusted higher. Very rarely will KONI ever need to be adjusted to the full firm setting.

This is a difficult question to answer because every KONI application is developed for that specific vehicle to get the best handling characteristics. In general, most factory shocks are under-damped for optimised handling so KONI engineers select firmer valving. Unfortunately factory shocks are generally chosen for financial reasons rather than performance, so lower technology, cheaper shocks are standard. In some instances a factory shock may have good characteristics in some parts of the working range but need some help in other parts, and there are even a few instances where the KONI engineers found better handling by softening the factory units.

KONI traditional yellow Sport shocks are (in most cases) adjustable for rebound damping force – some need to be removed to adjust, some are top adjustable and can be adjusted whilst fitted. The orange STR.T dampers are fixed rate, non-adjustable dampers with a setting very similar to a Sport shock on its minimum position.

As it is not sensible or viable to return dampers from all over the world to the Dutch factory to be serviced or repaired, in each country there are independent damper service centres appointed. There are 2 centres in the UK that are able to service, repair or rebuild KONI road or race dampers. Please contact us for their details.

The real answer is no – a human being can't move the shock fast enough to even begin to flow oil through the piston valving.

What you feel by hand when you make adjustments is the bleed changes (oil bypassing the piston valving) and some amount of seal and guide friction/stiction that can be accentuated by the fact that the shocks are brand new and the parts have not worked together much yet.

Every single KONI shock absorber is dyno tested at the factory prior to advancing to the paint line. If someone receives a KONI shock with paint on it, this is proof that it passed the dyno test when it was built.

Only a shock dyno that can move the shock fast enough to operate at car-like piston speeds will flow oil through the actual piston valving and quantify the real damping forces generated.

Leaking KONI dampers is extremely rare, but other factors could make it look like you have a leak. Here's how to identify whether a leak has occurred.

Assembly Oil

Several different lubricants are used in the construction of shock absorbers. KONI uses assembly oils which are yellow or black in colour, sometimes appearing brown on the damper. This assembly oil is easily distinguished from the hydraulic damping fluid. New shock absorbers may have a slightly moist rod, seal and/or body. If excess oil is evident, wipe the damper clean and proceed with the installation. The damper is fit for service.

Hydraulic Fluid Colours

• Blue hydraulic fluid: KONI passenger car dampers (Classic, STR.T, Special Active and Sport), 4WD & SUV dampers (Heavy Track, Special Active), and commercial vehicle cab dampers.
• Red hydraulic fluid: KONI 4WD (RAID), commercial bus, truck and trailer applications.

If a brand new damper has bright red or bright blue hydraulic fluid droplets, the damper should not be fitted to the vehicle. Contact your original supplier for further instruction.

Misting / Sweating

It is necessary for the oil seal the rod passes through to remain lubricated. As a vehicle travels over uneven terrain, the continuous movement of the piston rod will cause oil to "sweat" from the top seal. This condition is known as "misting" and is evident from a moist stain on the outer body to which dust will adhere. This does not indicate the oil seal has failed – a KONI damper can lose up to 30% of its total oil volume before its operation is negatively impacted.

Where bright blue or bright red droplets of hydraulic fluid are evident on the surface of the shock absorber body or dripping from its base, the seal may have failed, and the damper may need to be replaced or repaired. Please contact your distributor for replacement or repair options.