Ki Mobility Tsunami ALX

Ki Mobility's Tsunami is a low cost ultra-light rigid framed wheelchair. With a sleek look, and light frame, it provides a stiffer and more responsive ride. Pitched directly against the Quickie Argon2, the Tsunami has an outstanding transport weight from just 5.8 kg giving you the performance of a high-end rigid chair at a fraction of the cost.

Product Description

Ki Mobility

While not as well known in the UK as brands such as Quickie and Kuschall, Ki have taken the US market by storm. Established in 2005 they have risen rapidly to become the second biggest supplier in North America for active wheelchairs, and are growing rapidly in the UK. This is driven by their exclusive focus on lightweight active wheelchairs, constantly driving their development with new innovations, unencumbered by other distractions.


The signature frame construction of Ki's rigid chairs is unlike anything else seen on the market. Made of ultra-stiff 7000 series aluminium with oversized 1 3/8" tubing, it is highly rigid and offers a level of vibration dampening not usually found on an aluminium chair. The Tsunami is a mere 1 kg heavier than Ki's flagship Rogue, the main difference being its precision machined aluminium castor housings.

Highly transportable, the Tsunami is available with an optional folding backrest locking mechanism - with the wheels popped off, the chair can be lifted over your body onto a car seat.


The Tsunami is custom built to provide you with a perfect fit. It is available in larger sizes than the Rogue - seat widths of up to 22 inches, and with an HD version offering a 25 stone (158.76 kg) weight capacity to fit heavier users; most active chairs have far lower capacities. Ki's stunning Axiom range of cushions and backrests are available with the Tsunami - we've found them to be so popular that many people buying other manufacturers' chairs have been opting for Axiom cushions; they offer a great combination of comfort, value and style.

The Tsunami ALX maintains a good level of adjustability, allowing us to fine-tune its fit, and adapt the chair to your changing wheelchair skills. Many parts of the chair feature infinite adjustability, including the footplate and Crescent CG system, allowing a more precise fit than offered on other chairs.


Just because the Tsunami has a low price does not mean it sacrifices any options or the ability to customise your chair. You can select from a wide range of footrests, armrests, front-frame bends, sideguards and loads more. Ki Mobility's Maxx Performance spoke wheels are a free of charge option, but are anything but basic - they offer great performance, and look as good as Spinergys. Should you want actual Spinergys, these are available too, as well as other industry standards including Frogs Legs castor forks, Natural Fit handrims and the ever-popular Marathon Plus Evolution puncture resistant tyres.


The Tsunami features a unique look thanks to its oversized frame tubing, unlike anything else on the market save for Ki's Rogue. It can be customised with your choice of 12 gloss and 9 matte frame colours, or even a selection of hydrographics. We think the matte colours look outstanding on the Tsunami, giving it a refined, understated look that you don't get from other more flashy chairs.

Our Verdict

We've found the Tsunami ALX to be one of our most popular active chairs. It offers great value - excellent performance from a rigid chair at a reasonable price. What's great is that Ki chairs don't require you to spend a fortune to get the lightweight upgrades, and you can get a really high-end, great looking chair for barely more than the base price.

Its most obvious competitor is Quickie's Argon2, which is a great chair - we've found many people opt to go for the Tsunami as it's just that bit different, and not something you see prescribed on the NHS. If your budget can stretch a bit further, then Kuschall's K-Series 2.0 is worth a look, as well as TiLite's Aero T.

Key Features

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    Highly affordable rigid chair
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    5.8 kg transport weight
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    Stiff and responsive ride
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    Oversized 7000 series aluminium tubing

Our Service

We passionately believe we provide a level of service above and beyond other retailers that gives you real value for money. Our in-house experts can provide you with impartial advice on the right wheelchair for you, and none of our staff are on commission.

All aftercare is carried out by our experienced engineers, with a fleet of mobile engineers, and a fully stocked workshop at our HQ - we don't get a third-party company to carry out our work.

Try This Wheelchair

Our Chessington Showroom is stocked with a wide range of wheelchairs for you to try out and compare, and our product specialists are on hand to answer all your questions, and carry out a full assessment. Visiting our Showroom allows you to see the widest possible range of products before making your decision on which wheelchair to buy.

We are also able to carry out home assessments and demonstrations - please call us to book one in. A home consultation comes with the benefit of trying out a wheelchair around the environment in which you will be using it.