Ki Mobility Catalyst Folding Wheelchair

Ki Mobility’s Catalyst folding wheelchair range has redefined the ultra-lightweight folding wheelchair market. Constructed from ultra-lightweight 7000 series aluminium, the Catalyst 5 is arguably the best choice in high-performance folding wheelchairs. A huge selection of options to help you customise and configure your chair is available.

  • Folding frame with X-Hinge making it easier to fold and unfold
  • High grade 7000 series aluminum or titanium light-weight frame
  • Frame depth matches seat depth with no overhang
  • Features to make the chair rigid and strong – dual interlocking cross braces and seat rails set inside the side frame
  • Lifetime warranty on the front hangers
  • Standard weight limit of 136kg

More Information

The Catalyst range:

Ki Catalyst 5 in red
Catalyst 5
The most adjustable wheelchair of the range, with the largest variety of customisation and options available.
Ki Catalyst 5Ti
Catalyst 5Ti

A Catalyst 5 with a titanium frame for an even more lightweight wheelchair.

Ki Catalyst 5Vx
Catalyst 5Vx

Endless style, expected quality and essential value

Ki Catalyst 4
Catalyst 4 and 4C
A solid wheelchair with a cost effective price tag.  


Ki Catalyst innovative frame design
Innovative and patented frame design

Catalyst frames are constructed from 7000 series aluminum, or Ti3AL/2.5V titanium alloy on the Catalyst 5Ti. A stronger and lighter vibration dampening alloy that contributes to the Catalyst’s superior durability and high quality construction. You can always count on quality construction when choosing a Catalyst.

Ki Catalyst dual interlocking cross brace
Dual interlocking cross brace

The Dual Interlocking Cross Brace design creates a frame that locks together to minimise the unwanted movement, or “front to back” racking, while redistributing loads onto components that can better manage forces. What this means to you is that no matter how much you use your Catalyst, the frame will remain as solid as it was the day you got it.

Ki Catalyst frame depth matching seat depth
Frame depth matches seat depth

Seat depth is an important function of every chair. It promotes proper seating position and can help with pressure reduction. So many manufacturers use the seat upholstery to measure the seat depth, leaving excess front frame protrusion. Ki Mobility matches the frame depth to the seat depth, on every chair. This results in a lighter chair, improved turning radius, easier transportation, storage, and a better result for the user.

Ki Catalyst between the rails design
Between the rails design
On typical above-the-rails designs all of the forces from the ground up, into the chair, and from the user down, through the chair, are transferred into the cross braces. In order to effectively deal with these loads other manufacturers design heavy cross-braces. The Catalyst’s unique “between-the-rails” design transfers these loads from the cross brace to the vertical side frames. The geometry of the side frames allows them to support far greater loads.
Ki Catalyst with power x hinge
Power X hinge
The Catalyst’s patented Power X-Hinge revolutionises how the cross brace folds within the frame by acting as an extensible link that expands and contracts when the frame folds and unfolds. This patented device allows for a unique geometrical frame design that is more structurally sound than other designs while also making it much easier to fold and unfold, every single time.
Ki Catalyst swing away front hangers
Swing away front hangers
Enjoy the simplicity and strength of Catalyst’s patented swing-away footrest hangers. The most intuitive hanger on the market allows you to attach and detach from any angle by simply pulling up or pushing down. It doesn’t get any easier than this. The tapered engagement keeps the footrests snug and rattle free. 
Ki Catalyst structural integrity
Structural integrity

Some other wheelchairs rely on the tension of the seat sling to solidify their frame when opened. However after a few months the upholstery experiences a natural stretching and your chair is “loosey goosey”. The Power X-hinge eliminates the need for the seat sling to be a structural part of your frame. A Catalyst is solid even without upholstery. This ensures a more rigid and responsive ride.

Ki Catalyst height adjustable armrest
Height adjustable armrests

The tapered, noise free, no-rattle design of the height adjustable armrest produces a rock solid feel that is functional, light weight and easy to use. Like many of the options and accessories on Catalyst these were designed to be durable and user friendly. This is just one of many armrest options available through the Catalyst range.

Ki Little Wave Clik showing Maxx Performance Spokes
Maxx Performance Spokes
Maxx Performance is Ki’s new spoke wheel that offers performance and style without a high price tag. It features eighteen radial spokes and a high flange hub that result in increased rigidity for a more responsive, better performing wheel. The heightened level of responsiveness combined with a lightweight design give the rider the most from every push. Constructed with a 6061 series aluminum rim and straight steel spokes with a durable black satin finish for a look and feel that is anything but standard.
Technical specifications
Catalyst 5Catalyst 5TiCatalyst 5VxCatalyst 4 and 4C
Frame materialAluminiumTitaniumAluminiumAluminium
Weight capacity136kg | 158kg with heavy duty frame136kg | 158kg with heavy duty frame136kg | 158kg with heavy duty frame113kg | 158kg with heavy duty frame
Transport weight5.8kg (16"x16" frame, 5"x1" poly castors, swing away arms; footrest and rear wheels omitted)4.94kg (16"x16" frame, 5"x1" poly castors, swing away arms; footrest and rear wheels omitted)6.3kg (16"x16" frame, 5"x1" poly castors, height adjustable t arms; footrest and rear wheels omitted)7.25kg (16"x16" frame, 5"x1" poly castors, height adjustable t arms; footrest and rear wheels omitted)
Standard weight10.43kg8.57kg10.89kg11.79kg
Seat Width14 - 22 inches | 36 - 56cm
14 - 22 inches | 36 - 56cm
14 - 22 inches | 36 - 56cm
14 - 22 inches | 36 - 56cm
Seat Depth14 - 20 inches | 36 - 51cm14 - 20 inches | 36 - 51cm14 - 20 inches | 36 - 51cm14 - 20 inches | 36 - 51cm
Front Seat Height13.5 - 21 inches | 34 - 53cm13.5 - 21.5 inches | 34 - 53cm13.5 - 21 inches | 34 - 53cm13.5 - 21 inches | 34 - 53cm
Rear Seat Height11 - 20 inches | 29 - 50cm11 - 19.5 inches | 28 - 50cm11.5 - 20 inches | 29 - 50cmCatalyst 4: 12 - 19 inches | 31 - 48cm
Catalyst 4C: 12 - 20 inches | 31 - 51cm
Camber0° | 2° | 4°0° | 2° | 4°1° - 4° (1° increments)
Top Frame Tubing size1 inch | 2.54cm1 inch | 2.54cm1 inch | 2.54cm
Bottom Frame Tubing size1.25 inches | 2.86cm1.25 inches | 2.86cm1.25 inches | 2.86cm
Ansi Resna WC-19 Transit Approved YesYesYesYes

Warranty Information

Ki Mobility warrants the frame, cross braces, hangers and quick-release axles of the Catalyst against defects in materials and workmanship for the life of the original purchaser. All other Ki Mobility-made parts and components of this wheelchair are warranted against defects in materials and workmanship for one year from the date of first consumer purchase.

The expected life of the frame is five years.

The warranty does not cover:

  • Wear items: upholstery, tyres, armrest pads, tubes, armrests and push handle grips.
  • Damage resulting from neglect, misuse or from improper installation or repair.
  • Damage from exceeding the weight limit.

Product Compliance with Relevant Standards 

The Ki Mobility Catalyst range has been tested to and complies with the following standards:

  • AS3695:1992

ARTG Certificate: 182896 


Book An Appointment