Update 11/1/18Current stocks of Gaz shocks sold out approx 3 weeks for next delivery. You can order on line to reserve but there will be a delay due to Gaz del times. If urgent we can supply the Spax shocks as an alternative. See separate page to order.

 long awaited conversion from the hydragas spheres to a true coil over shock suspension designed by Mike Satur will give the MGF a new lease of life and brings it bang up to-date for modern road and driving conditions.       NO WELDING REQUIRED BOLT ON DESIGN, DIY installation!     Please read all information

The problem

The last MGF was made in early 2002 so now some 15 years old and some are  22 years old, as my own car is, so the hydragas units are well past their intended service life by some 10-15 years. The failings with the hydragas units are corrosion, leaking fluid and the eventual loss of pressure in the internal nitrogen compartment ..something that cannot be prevented , as well as the fluctuation in ride height. This gradual loss of gas leads to a harsher and harsher ride which may not be noticed until too late and permanent internal damage has been done.The units can also fail at any time without any warning and if the suspension drops to it's lowest position then the car becomes un-drivable and also very difficult to load onto a trailer without damage.This is not meant to scare people but to make them aware of the potential pitfalls of the hydragas system and how it can affect you if you become stranded. A modern damper is very similar to Hydragas they both have fluid (oil) and gas pockets and controlled by internal valving so a better ride can be achieved with the latest technology and designs in  dampers and  springs. It is how this science is applied that is the secret of a suspension that works and suits the car. As good as hydragas was it can be surpassed in the ride quality,reliability and ajustability.

Keep it in mind that there are no new hydragas units available ,maybe some old stock but are likely to need re-gassing ( this is done by welding on a boss and a Schroeder valve and re-gassing with nitrogen ..this works but  does not add any reliability and is expensive for the parts you get)  if put back into production would not be a cheap part and I would guess they would be around £300 +each. Just look on Ebay to see how much secondhand used units are! A 'repair' service can only be undertaken on old units so reliability could become an issue and a repeat of the costs involved as well as the expense of removing and refitting and repressurising the hydragas system yet again. “At the moment there are enough spare (second hand) units to go round but this won’t always be the case” So the current solutions are not considered a permanent fix and in no way can they be guaranteed to last any length of time..you might be lucky. http://www.mgf-net.de/cut_unit Check Dieter's site for how your units look inside.Waning this site has explicit pictures of the Hydrafaff unit dissected and may upset some MGF owners of a weak disposition .

Plus you have the same old issue with the height going up and down with the ambient temperature and the associated problems with potential tyre scrubbing and lopsided appearance and trying to find a local garage with the knowledge and equipment  that can check and adjust the height correctly we may be lucky here in the UK but many owners in Australia /Italy /France/Spain/Japan/New Zealand//Switzerland/Austria/Miami/Belgium /Netherlands (where we have sold FCCKits) may not have  these facilities easily accessible.

For those that want to have a MGF in preference to a TF  (which has coil over shocks) and change to a coil/spring set up then this new kit will suit your needs.   You could fit he TF suspension but it had many design flaws and weaknesses, openly admitted by the design team that worked for Rover,  some were partly addressed on the last models produced but IMO not eradicated and in any case the parts may need refurbishing as they could be 15 years old..(you wouldn't want to use shocks and springs that were 15 years old),  the costs of complete sub frame refurbishment and swap would therefore be quite expensive even if you did all the work yourself.They also have the habit of knocking out the lower shock bearing and snapping the bolts..new units are also getting rare and can be expensive.The stock TF dampers are non adjustable for either damping or ride height.a decent setup  will cost around £700 at least. The MGF suspension parts are quite robust and parts that tend to wear are relatively cheap..ball joints and bushes for example, so keeping the same basic layout and improving the weaknesses makes sense.

Current solutions

The current offering of a 'coil in a can' (CIAC) solution just does not work as a suspension should (in my opinion) and is a compromise with the ideal design solution and is not sold as an upgrade! Remember the Hydra gas uses both a gas pocket spring under pressure and a fluid under pressure so these act against each other in a controlled manner and requires less leverage than a conventional steel spring would...using a steel spring to replace the hydragas is asking too much. for such a small amount of leverage.i.e the point at which the leverage acts on the spring (the knuckle joint) will only give 15-20mm of vertical  movement for the amount  the suspension moves, because it is too close to the pivot point and therefore insufficient leverage and is more of a rocking movement hence it is also known as a rocker/roller joint and the contact points are designed for this type of movement not a impact load a spring would impart. The relationship between the wheel and the spring/shocker movement is termed the motion ratio.. , the ratio of the vertical travel of the wheel to the vertical travel of the shock absorber/spring. eg. for 5" of wheel travel the shock will move 3"as is the FCCKit. in the case of the CIAC solution this equates to 5"wheel  to 0.5" spring (approx).any spring designer will tell you that is not a viable task to ask of a spring and for it to be effective.  The solution for the TF was to move the fulcrum/leverage point away from the pivot point to approx 3 times the  distance of the knuckle joint position and therefore allowing the spring/shock 3 x the vertical movement. a motion ratio of 5"to 3"..sufficient to allow the spring to work as it should. Obvious when you think about it..except the components chosen were chosen on price not effectiveness. Also critical is the angle of the spring/shocker to the vertical movement of the wheel...the more you go away from vertical the more the spring become less effective as it has to cater for bending loads as well as compression loads The FCCKit is 15deg  which is considerably less than the TF .This can compromise spring design and spring life.

Time has shown the damage to the chassis the CIAC conversions can cause via the shock absorber resulting in cracks in the chassis around the mounts. They are not owner serviceable, difficult to adjust, do not have adjustable dampers and can be quite expensive £800-900 plus fitting and you have to keep the old top arm/ bearings and knuckle/rocker joints, which may need replacing..feedback from people with this type of conversion have had to replace the knuckle/roller joints after installation, hardly surprising as the higher impact loads were not a design factor when using the hydragas . Parts alone could cost you another £300. This makes the kit quite expensive with ongoing repairs and also puts you back into a 'specialist' part supplier if one goes faulty with potentially the car being stranded somewhere waiting for a replacement unit. Some of these units come with a warning of 'serious injury or even death!' So  NOT something you would want to try and repair in a roadside emergency. Responsibility for the warranty seems hazy with poor feedback from current users trying to get some help...'Trusted' MG suppliers should avoid retailing these IN MY OPINION . and  therefore for the above reasons the CIAC is not a good solution despite some of the manufacturer's claims..

Design Requirements:

A new suspension kit that transfers the loads into the subframe not the bodyshell . YES

Has adjustable damper settings YES

Has a choice of Gaz or Spax dampers specially developed for the kit. YES

Has height adjustability and choice of spring rates . YES

Replace existing parts that are likely to be worn i.e pivot arms & bearings, knuckle joints,shocks,hydragas displacers .YES

Improves the safety and reliability. YES

Allows camber adjustment (optional camber kit)/ full wheel alignment YES

Has easily sourced replacement parts. YES

Does not require specialist equipment such as the hydragas pump/welding  YES

Mechanic or DIY friendly (DIY time approx a weekend experienced MGF familiar mechanic 6-8 hrs.)YES

Does not  have you weaving around avoiding bumps or uneven road surfaces. Lets you look at speed bumps with contempt. YES

Designed and made in the UK for a British car by a long established MGF specialist British company. YES

Offers a Track /race version and custom specifications. Soon to be approved for race regs. YES

Offers expert back up and assistance by telephone and email. YES

Offers uprated anti roll bars for road or track that compliments the design. YES

And finally a suspension kit that allows you to fine tune to your requirements and does what it says on the 'can' without having a can.. YES

Solution FCCKit (F Coil Conversion Kit)

The new suspension kit fulfills all the above criteria and comprises of: 4 shock turrets, 4 springs and 4 adjustable  shocks and 4 new design top arms and bearings with all the required nuts and bolts to fit and also offered with the option of a camber adjustment kit.£40 per axle set as a separate purchase  or £60 for front and rear kit saving £20 if purchased with the coil spring kit.

. Of course to fit the new kit will involve removing some or all of the old hydragas units, pipes and the top arms/bearings so a car hoist is advisable but we have tested the fitting by using a trolly jack and axle stands so it is within the scope of a DIY installation providing the hydragas fluid is de-pressurised correctly (after raising the car). Please note that the condition of the existing sub frames should be examined first as many are now corroded and may need repair or replacement and subject to checking at MOT intervals.

As a bonus the old hydragas units and parts can often be re-sold so recouping some of the costs  and helping other MGF owners to carry on hydrafaffing..

This kit WILL transform the handling and ride quality of your MGF far surpassing the original Hydragas..I know I have had a MGF since 1995 and have developed various suspension mods to help with the handling and ride. Come and test drive for yourself if you are considering re-gassing your old units and will see how good a MGF can ride and handle as Roger Parker put it "better than MGF and TF"

All parts are UK manufactured and as such will be  backed up by our 'off the shelf' spares should they be required but thankfully DO NOT come with a risk of death warning!

Buy direct from the manufacturer!! We are  offering this kit at £895 plus vat = £1074 plus delivery (or £955 plus vat = £1146 plus delivery with two camber kits saving £20 plus vat on ordering separately )  plus shipping costs.

To order please email to sales@mikesatur.com with your contact details and requirements if purchased from the web shop then we will confirm the delivery date.The delivery date may vary due to shock absorbers taking 4-5 weeks to manufacture, we try to keep stocks in but depending on demand this might vary.

If fitted at our workshops £300 plus vat.Tracking extra.


STOP PRESS: Leading MG Guru Roger Parker Independent road test report:

"I have to say even with the limited drive we were both very impressed with the suspension.  I recall working with the VHS guys when we were looking to introduce their Bilstein soft suspension for early TFs and it didn’t take more than a few feet of driving from their workshop across one finish of concrete across kerbs to another finish before turning onto the tarmac road to be able to feel a difference, and that was the same sort of perception we got from your drive onto the road, that was then amplified down the lane.  Like we said the ride was superb and a Trophy owner driving this car would think the car had been converted to standard, but then the  precision of your kit in terms of steering response and the reaction of the car was clearly better than MGF, and standard TF for that matter.  Add the full range of adjustability you have incorporated and the potential is very wide indeed.  We will have to have a longer drive on dry roads after you have confirmed and adjusted the geometry, but there is no doubt that this deserves to do very well." See future issues,Dec 2017, of MGOC magazine for full report and road test!!

Stop Press. 23/11/17 MG Enthusiast magazine purchases the FCCKit for their staff car now fitted and being tested !! See next issues for installation and road test reports by Rob Hawkins!! Latest report"Over the two weeks we drove the MGF following its coilover conversion, we completed several hundred miles along motorways, country lanes and through towns. The car’s handling is a major improvement, especially under hard cornering. The steering feels more positive and the car feels more predictable when pushed. In the case of our MGF with its tired hydragas suspension, this coilover conversion has returned it to being a sports car that can once more be fun to drive."See Jan/Feb issues of MG Enthusiast magazine. 

We are nominating certain garages and workshops for the fitting of the FCCKit so ask for details of an installer near to you. Alternatively fitting in our workshops from £300 plus vat Tracking extra. 

Remember we will only sell parts that work correctly and are correctly engineered for the job and  we have control

over the design and manufacturing process that way we can sell with confidence. Should you have any issues with parts or fitting you know where we are and who to talk to.

 We reserve the right to alter specification as we are constantly seeking to improve our products.


By purchasing our products you agree to protect our intellectual property and copy rights.

Feed back from Japan.Hello Mike

This will just be a quick impression as I have driven the car with FCCKit only 2weeks 1000 kilometers.
First I noticed the impact at the bump disappeared.
When I was using the Suplex kit, the noise of "spring in the can" was intense, in addition impacts like hitting with a hammer at every bumps.
The next one is that the movement of the suspension arm has dramatically improved.
Springs and dampers began to work well.
Turn in is crisp with good stability.
Gas-lost Hydragas and Suplex kit, springs did not work well.
On the rough road, wheels bounced with poor tracking road surface.
These annoying behaviors were wiped out by FCCKit.

I think that FCCKit is an optimal solution for replacing gas-lost hydragas or Suplex system.
If there is a problem, FCCKit is not suitable for people who want to use Hydragas, but for people who want to run MGF it will be a wonderful solution.



From Austria.


Hi Mike!
Height adjusted to 33.5 cm, Camber is set to 0,6” negative, 4 wheel alignment is done.

My damper settings: Front 12, Rear17.
The car drives fantastically like factory new !!! No loose steering at all.

No noise, no cracking or knocking.


I plan to make TÜF certificate in Austria for the conversion.

This will also be valid in Germany.

I will certainly need  an expertise about strength of the components, and some

other things..... let´s see what they need. I will contact you again if I already have more detailed information from the TÜF.




11/1/18 Hi Mike,

Just wanted to let you know that I picked up the MGF this afternoon and will have it for a few days to try it out. So far I've only done the 20 miles home, but I must say I am extremely impressed with the suspension – ride and handling both seem spot on. I shall put some more miles on it and report back..

Best wishes,

Simon Goldsworthy


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MGF Coil over GAZ shock conversion kit ROAD version.Mike Satur design Hydragas replacement

  • Product Code: MGF
  • Availability: In Stock
  • £1,074.00

  • Ex Tax: £895.00

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