BiMiHeavy Duty Class 4 Black 7" Straight Gas Lift for an Office Chair Heavy Duty Class 4

I bought this to replace the original unit in my Ikea office chair that was tired and leaking oil.I followed the guidance given by another reviewer and removed the base and wheels from the chair.I found that holding the wheels in my hand and hitting the bottom of the old gas strut a couple of times with a club hammer released it.Getting the gas strut to release from the chair base plate itself was slightly harder, but again I followed the guidance, clamped the chair base plate in a vice and used stilsons on the gas strut. It took a couple of firm taps on the stilsons with a hammer, but the gas strut then released.Once the old unit was removed, fitting the new unit was simple, and the chair has a new lease of life.Unit seems high quality, was a direct replacement for the old one I removed and seems to have the same range of travel, albeit the chair sits slightly higher at full "up", as the new unit isn't tired like the old one was.Excellent value. Highly recommended.

Fits perfectly and works well every time. No leakage of gas so the chair doesn't sink like with my old cylinder.Hardest part of the installation was removing the old one. This one installed with almost no effort.

This gas lifter replaced my old chair lifter, which never worked properly from new.This appears to be good quality and easy to fit.It goes up and down with ease and fit my office chair perfectly.The only minor issue is it does make a bit of a clunk as I sit in the chair, I think this is just because it is new. I will update this review if it changes in any way.But at present would I recommend or buy again, yes to both.Note: I watched a few youtube videos on how to release the old lifter, in the end, I removed the base and wheels from the chair (4 Allen bolts). I place the wheels star part upside down between 2 chairs for support and hit the base of the lifter with a lump hammer, this only took 2 hits and the post was free.To remove the post from the seat base I put the base in a bench vice then fitted a mole grip to the post, it only took 2 turns and the post came out.I hope these methods prove helpful to you.

The Bimi gas lift lasted for 2 years and then it failed, maybe its just your luck, may try another one

Getting the old gas lif out was harder than getting the new one in. Basically it is just a push fit.

What a great find, quick dispatch , great value, was simple to fit and replace, you will need a club hammer and some WD40, depending on how old your office chair is, spray the bottom and top area around the old gas lift cylinder, leave for 5 mins, then gently tap the base of the cylinder from the legs, once free, repeat process at top end, you will find it much easier if you remove base section from your chair, once done simply fit new cylinder into position job done , took me 15 mins in total.

I bought an 18 inch pipe wrench. I sprayed WD40 in the area that needed to be released. I left it for 5 minutes an put the chair on its side. I applied the pipe wrench and the gas strut was soon released from the seat. I placed the wheel part on a filing cabinet and used a hammer to hit the gas strut and after two or three hits it fell out.The replacement strut was inserted and so far works brilliantly. So much better than buying a new chair at£ 150.00. The pipe wrench cost £ 20.00 but the job was easy to do with the right tools. You get more force with 18 " rather than a shorter pipe wrench.

This 7" gas lift is the size I needed to replace the gas lift in my Ikea MARKUS chair. The tube is marked as being rated as class 4 which is quite heavy duty and the same as the original. It weighs a hefty amount and feels very solid. Unlike the photo however, it's all black with no chrome parts at all.The old tube was a pain to remove but WD-40 and a hammer got the base off. Removing the top from the chair mount was harder but boiling water over the fitting followed by some heavy hammering got it to come loose.I havn't had this item long but if it fails prematurely I'll try and update the review to reflect that.

OTTIMO PRODOTTO..... COME DA TITOLO è PIU FACILE MONTARE IL NUOVO CHE SMONTAR IL VECCHIO PER SOSTITUIRLO.DIFFIDATE DAI VIDEO CHE CON 2 BOTTARELLE QUA E LA SI SFILA DALLA BASE E DALLA SEDUTA......

Me había quedado sin gas en la columna y no tenía ni idea de cómo arreglarlo, así que cuando encontré estas columnas de gas para sillas y sillones de oficina, se me abrió el cielo, y no para tirarme patatazos. Medí la que tenía, ya en lo más bajo, sólo hay que medir el cartucho negro, el ancho, pedí uno, y el mismo día que me llegó lo cambié, y encantada desde entonces.

acheter car j'avais un fauteuil bureau comme cuir comme neuf mais le vérin était hs franchement c'est parfait ma chaise est du coup neuve et c'est vraiment de la bonne qualité !!!!

sin wie bestellt und erwartet. Guter Preis und werden sicher so lange halten wie die Originalen, aber ist ok so ;-)

Fait ce qui lui est demandé, et de la bonne taille.