Skip to Main Content
Menu
1-800-850-0335
7 Days / Week View Hours
WE'RE HERE FOR YOU 7 DAYS A WEEK

Product Experts

to learn about products & place an order

1-800-850-0335

M-F 9am - 9pm ET

Sat 10am - 6pm ET

Sun 10am - 4pm ET

Parts Experts

looking for parts?

1-866-931-2213

Clock Icon M-F 9am - 6pm ET

Setting Wheel IconRequest parts

Customer Service

for existing order support

1-800-850-0335

Clock Icon M-F 9am - 6pm ET

Technical Support & Service

for service on your product

1-800-850-0335

Clock Icon M-F 9am - 6pm ET

Service IconRequest Service
0 Cart

 

1-800-628-6347

M-F 9am - 9pm ET

Sat 10am - 6pm ET

Sun 10am - 4pm ET

Setting Wheel IconRequest parts Service IconRequest Service

Catalyst 4C

 
5.0  from 1 reviews
100% recommended

A great lightweight option made to accommodate complex seating systems and a large range of positioning preferences.

NEED HELP OR ADVICE?

Our Product Experts are here for you

1-800-850-0335

Ki Mobility

(Model No. Catalyst 4C)

Product Overview
$1,116.00
$1595
Customize

The SpinLife Difference Includes:

Easy-To-Fold Design

Made in the USA

SHIPPING INFORMATION:
Available in:
Custom Built for You
Leaves Warehouse In:
15-25 Business Days Details
Ground Shipping:
FREE for orders over $50!
Expedited Shipping:
GO
2nd Day: $0.00
Overnight: $0.00
Unavailable
SHIPPING INFORMATION
Available in:
Custom Built for You
Leaves Warehouse In:
15-25 Business Days Details
Ground Shipping:
FREE for orders over $50!
Expedited Shipping:
GO
2nd Day: $0.00
Overnight: $0.00
Unavailable
OVERVIEW

Features

  • Full Range of Seat Widths from 14” to 22”
  • Seating System Cross Brace
  • Optional Removable Aluminum Seat Pan
  • Cross Brace Design Creates Better Rigidity and Durability
  •  “Between-The-Rails” Seat Design
  • Lifetime Warranty for Legrests

Key Specs

  • Quick-Release Axles: Yes
  • Weight capacity: 250 lbs.
  • Starting Weight: 26 lbs.
View all specs

Manuals, Literature & Videos

Overview

Ki Mobility's whole Catalyst line offers a Dual Interlocking Cross Brace.This design creates a frame that locks together so that it minimizes unwanted movement and maximizes the energy transferred in each of your pushes making your push as efficient as possible. The “Between-The-Rails” Seat Design has the seat frame tubing setting side-by-side rather than stacking them atop one another. So instead of the weight of the user resting on the cross brace, the weight is transferred to the side frames. This prevents having to use heavy cross braces which add weight to the wheelchair. 


Even how the Catalyst 4C folds and unfolds is unique. A Power X-Hinge is an extending link from the frame to the cross brace that expands and contracts when the frame is opening or closing. Another benefit of the Power X-Hinge is how it improves the frame’s structural integrity. The extending link provides the frame’s strength and rigidity rather than the seat upholstery. 


Not to be forgotten are Ki Mobility’s one of a kind legrests. The legrests can be mounted or removed from any angle. No need to rotate all the way or all the way out like those found on other wheelchairs.


What Makes This Different
The Catalyst 4C has all the features that separate you get from the Catalyst 4 but offers a much wider range of seat widths and depths as well as a cross brace that easily accommodates seating systems and positioning aids. A removable solid seat pan can be added for those needing a more supportive base for their cushion. As with the Catalyst 4, the 4C features the offset axle. The axle plate is mounted 1-1/2” forward to the axle position of similar wheelchairs from other manufacturers. By positioning the axle plate in this fashion, the Catalyst 4C can greatly improve your push efficiency. The design of the simple axle plate allows for easy vertical adjustments in 5 different positions. For those wanting or needing greater rearward stability, the axle plate can be reversed. You also get the rear wheel options of Ki’s own Maxx Performance Spoke which gives you a highly rigid and responsive ride that gives you the most roll for every push you give it. If you prefer mag wheels to spoke wheels, the Catalyst 4C also offers X-Core’s lightweight and stylish mag wheels. The X-Core mag wheels provide greater stiffness and a more rigid ride than traditional mag wheels.

Why We Like It
The Catalyst 4C offers a great range of options for an affordably priced lightweight wheelchair. The 4C can accommodate seat widths from 14” to 22” and seat depths from 14” to 20”. Seat heights are available from 13.5” to 21”. This means the Catalyst 4C can be a great wheelchair for everyone from a shorter user who propels with their feet to the taller user who prefers to push with their hands. A special cross brace is available to easily adapt to specialty seating. The 4C also can be built with a removable aluminum solid seat so complex seating can be provided while still permitting the wheelchair to fold for easy transport.The Catalyst 4C is a great option whether you need a basic lightweight wheelchair or a lightweight wheelchair capable of meeting unique body types or special needs.

Measuring Guide


View Detailed Measurement Guide
Seat Depth1
Measure from the most posterior point of the body to the inside of the knee, minus at least two inches. Some prefer more leg overhang to make room for their hand when lifting their leg.
Back Height2
Measured from the seat base to the top of the wheelchair back. Depends on how much upper back support is needed, and also affects freedom for the upper body to rotate.
Rear Seat to Floor3
Measurement from the ground to the rear seat edge. Relative to the front seat-to-floor dimension, this determines the rearward slope ("dump" or "squeeze") of the wheelchair seat.
Hanger Angle4
Determines how far the toes extend away from the body, measured from the horizontal. A tighter angle allows the wheelchair to turn around in less space. Depends in part on ability of the knee to bend towards the perpendicular.
Seat Width5
Determined by the widest point of the body from knee to hip, plus an inch to ensure room to move. Consider bulk of clothing, particularly a heavy winter coat, if relevant.
Wheel Camber6
Angle of the wheel relative to the vertical. More camber improves stability and agility, but also limits ability to pass through narrow spaces. A typical daily wheelchair uses three degrees of camber.
Front Seat to Floor7
Measure the leg from the back of the knee to the sole of the foot. Then subtract the thickness of the cushion when it is compressed. Next, add a minimum of two inches for footrest clearance. Do not add the footrest clearance if the wheelchair will be foot-propelled.
Footrest Width8
Measure from the inside of each legrest tubing the distance or desired distance between legrests.
Center of Gravity9
Measure from the front of the seat back post to the center of the rear axel.
Seat to Footrest Length10
Measure from the edge of the seat upholstery to the top rear of the footrest.
Backrest Angle11
Measure the the angle of the back post to the floor. Ninety degrees will be perpendicular to the floor, to approximate the angle from the back post to the seat, subtract two degrees from measurment for every .5" of dump.

More Information on the Catalyst 4C

SPECS

Specs

Seat Widths: 16"
17"
18"
19"
20"
21"
22"
Product Weight: 26 lbs.
Legrest Options: Elevating
Swing Away
Quick-Ship: No
Seat to Floor Heights: 13.5" to 21"
Frame Type: Folding
Seat Depths: 14"
15"
16"
17"
18"
19"
20"
Front Seat to Floor Height: 13.5" to 21"
Rear Seat to Floor Height: 12.5" to 20"
Angle-adjustable Back: Yes
Reclining Back Option: Yes
Rear Wheel Size: 20"
22"
24"
25"
26"
Pneumatic (air-filled) tire option: Yes
Quick-Release Axles: Yes
One-Arm Drive Option: No
Upholstery Options: Yes
Armrest Options: Fixed Height
Flip Back
Height Adjustable
Removable
Swing Away
Product Weight Range: 20 lbs to 30 lbs

Approximate Shipping Dimensions and Weights

Product Weight: 26 lbs.

More Information on the Catalyst 4C

REVIEWS

Catalyst 4C Reviews

5.0
 
(1)
Features
 
5.0
Quality
 
5.0
Ease of Use
 
5.0
Meets Expectations
 
5.0
View All Reviews

100% of reviewers recommend this

These reviews are from SpinLife customers who have purchased and used the Catalyst 4C.

Customer Reviews

Showing:

More Information on the Catalyst 4C

WARRANTY

Warranty Information

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



Limitations to the Warranty

1. We do not warrant:

a. Wear items: Upholstery, tires, armrest pads, tubes, armrests and push-handle grips.

b. Damage resulting from neglect, misuse or from improper installation or repair.

c. Damage from exceeding weight limit.

2. This warranty is VOID if the original chair serial number tag is removed or altered.

3. This warranty is VOID if the original chair has been modified from its original condition and it is determined that the modification resulted in failure.

4. This warranty applies in the USA and Canada only. Check with your supplier to find out if international warranties apply.



Ki Mobility’s Responsibility

Ki Mobility’s only liability is to replace or repair, at our discretion, the covered parts. There are no other remedies, expressed or implied.



Your Responsibility

a. Notify Ki Mobility, via an authorized supplier, prior to the end of the warranty period and get a return authorization (RA) for the return or repair of the covered parts.

b. Have the supplier send the authorized return, freight pre-paid, to:



Ki Mobility

5201 Woodward Drive

Stevens Point, WI 54481



c. Pay any charges for labor to repair or install parts.

More Information on the Catalyst 4C

RETURNS

Return Policy

This item is non-returnable for one of the following reasons:

  • This item is custom-made by the manufacturer to suit your specific needs . Please review all specifications carefully before placing your order. Once production of your item has begun – the order is unable to be cancelled.
  • For hygienic safety and per FDA regulations this item is non-returnable, even if unused.
  • Please inspect your product upon delivery. If the product is damaged or is not the correct product, please refuse the delivery. If your item was delivered without a signature and is damaged or incorrect please call SpinLife Customer Service.

If you have questions about this item please call a SpinLife Expert at 1-800-850-0335.

More Information on the Catalyst 4C

Customize & Buy

Frame Type

Choose One

Standard

Swing Away

Super Low-Swing Away

Heavy Duty (350 lbs weight capacity) (req. 6" casters)

+ $350.00

Frame Finish

Help Me Choose

Choose One

High Gloss - Black

High Gloss - Blue Skies

High Gloss - Bubblegum Pink

High Gloss - Candy Blue

High Gloss - Candy Purple

High Gloss - Candy Red

High Gloss - Copper

High Gloss - Granny Smith

High Gloss - Metallic Orange

High Gloss - Yellow

Matte - Charcoal Gray

Matte - Emerald Green

Matte - Iridescent Burgundy

Matte - Iridescent Navy

Matte - Military Green

Matte - Retro Red

Matte - Royal Blue

Matte - Shadow Black

Matte - Smooth White


Hydrographics

Help Me Choose

None

AOR1 Desert Digital

+ $486.50

Carbon Fiber (select base color)

+ $486.50

Muddy Girl

+ $486.50

NEXT Camo

+ $486.50

Zebra (select base color, N/A in black)

+ $486.50

Hydrographic Base Color

Help Me Choose

None

Black

Blue

Granny Smith

Pink

Purple

Red


Seat Width

Choose One

16"

18"

14"

+ $31.50

15"

+ $31.50

17"

+ $35.00

19"

+ $108.50

20"

+ $318.50

21"

+ $350.00

22"

+ $350.00

Seat Depth

Choose One

14"

16"

18"

15"

+ $49.00

17"

+ $63.00

19"

+ $136.50

20"

+ $353.50

Seat Upholstery

Help Me Choose

None

Removable Aluminum Seat Pan

+ $192.50

Cross Brace

Help Me Choose

Choose One

Standard Cross Braces

Seating System Cross Braces (N/A w/ Seat Sling)


Back Type

Help Me Choose

Choose One

Standard

Angle Adjustable back w/ Push Handles

+ $136.50

Back Height Range

Choose One

Short

Medium

Tall


Back Height Setting

Choose One

8.5"

9.5"

10.5"

11.5"

12.5"

13.5"

14"

14.5"

15"

15.5"

16"

16.5"

17"

17.5"

18"

18.5"

19"

19.5"

20"


Backrest Upholstery

Help Me Choose

Choose One

Standard

Tension Adjustable, Standard Cover

+ $196.00

Tension Adjustable, Air Mesh Breathable Cover

+ $248.50

Omit Back Upholstery

+ $-7.00

Back Post Option

Help Me Choose

None

Standard with Push Handles (Standard back only)

Straight without Push Handles (Standard back only)

8° Bend w/ Push Handles (Standard back only) (N/A w/ Short back height range)

+ $17.50

Military Patches

Help Me Choose

None

US Air Force Service Patch

+ $63.00

US Army Service Patch

+ $63.00

US Coast Guard Service Patch

+ $63.00

US Marines Service Patch

+ $63.00

US Navy Service Patch

+ $63.00

US Purple Heart Patch

+ $63.00

Purple Heart with US Air Force Patch

+ $101.50

Purple Heart with US Army Patch

+ $101.50

Purple Heart with US Coast Guard Patch

+ $101.50

Purple Heart with US Marines Patch

+ $101.50

Purple Heart with US Navy Patch

+ $101.50

Footrest Type

Help Me Choose

Choose One

Composite Footplate

Angle Adjustable Footplate, Composite

+ $136.50

Angle Adjustable Footplate, Aluminum

+ $136.50

One Piece Flip Up Angle Adjustable footplate (N/A with Front Mount Hangers or PRO ELR)

+ $133.00

Footrest Hanger Type

Help Me Choose

Choose One

Extension Tube Mount, 60°

Extension Tube Mount, 70°

Extension Tube Mount, 80° (N/A w/ 7" or 8" casters)

Front Mount, 70°

Front Mount, 80° (N/A w/ 7" or 8" casters)

Front Mount, 90° (N/A w/ 7" or 8" casters, Titanium frame)

Pro Elevating Leg Rests, Low Pivot Setting

+ $245.00

Pro Elevating Leg Rests, High Pivot Setting

+ $245.00

Omit Hangers

+ $-14.00

Footrest Extension

None

Short

Medium (N/A with PRO ELR's)

Long


Front Mount Hanger Extension

None

3" Extension (req. Front Mount Hangers)

+ $24.50

3" Extension provided as parts (req. Front Mount Hangers)

+ $24.50

Seat to Footrest

Choose One

5"

5.5"

6"

6.5"

7"

7.5"

8"

8.5"

9"

9.5"

10"

10.5"

11"

11.5"

12"

12.5"

13"

13.5"

14"

14.5"

15"

15.5"

16"

16.5"

17"

17.5"

18

18.5

19

19.5

Selecting PRO ELR Footrest


Hanger Release

Help Me Choose

Choose One

Classic

4-Way, In-Line (N/A w/ PRO ELR)

4-Way, Out (N/A w/ PRO ELR)


Residual Limb Support

Help Me Choose

None

Residual Limb Support, Right

+ $276.50

Residual Limb Support, Left

+ $276.50

Residual Limb Support, Right and Left

+ $553.00

Omit Left Hanger

+ $-7.00

Omit Right Hanger

+ $-7.00

Residual Limb Support Cover Type

None

AirMesh

Smooth


Residual Limb Support Pad Size

None

5" x 8"

7" x 10"

9" x 10"

9" x 14"

11" x 10"

11" x 14"


Heel Loops

Help Me Choose

None

Heel Loops

+ $28.00

Adjustable Heel Loops

+ $35.00

Omit Heel Loops


Calf Straps

Help Me Choose

None

Velcro Adjustable

+ $28.00

Padded Velcro Adjustable

+ $47.60

Bodypoint Padded AeroMesh

+ $82.60

Casters

Help Me Choose

Choose One

4" x 1" Polyurethane

4" x 1.5" Polyurethane

+ $38.50

4" x 1.5" Soft Roll Aluminum

+ $129.50

5" x 1" Polyurethane

5" x 1.5" Polyurethane

+ $38.50

5" x 1.5" Soft Roll Aluminum

+ $129.50

6" x 1" Polyurethane

6" x 1" Pneumatic

+ $63.00

6" x 1.5" Polyurethane

+ $38.50

6" x 1.5" Soft Roll Aluminum

+ $129.50

6" x 2" Polyurethane

+ $49.00

7" x 1" Polyurethane

8" x 1" Polyurethane

8" x 1" Pneumatic

+ $63.00

8" x 2" Pneumatic w/ Foam Inserts

+ $157.50

Fork Stem

Choose One

Standard

3/4" Longer Fork Stem

+ $24.50

1 1/2" Longer Fork Stem

+ $24.50

Caster Fork Options

Help Me Choose

None

Caster Pin Locks

+ $136.50

Frog Legs Ultra-Sport Fork, Black - user weight under 80 lbs

+ $315.00

Frog Legs Ultra-Sport Fork, Black - user weight 80-120 lbs

+ $315.00

Frog Legs Ultra-Sport Fork, Black - user weight 120-160 lbs

+ $315.00

Frog Legs Ultra-Sport Fork, Black - user weight 160-220 lbs

+ $315.00

Frog Legs Ultra-Sport Fork, Black - user weight 220-260 lbs

+ $315.00

Frog Legs Ultra-Sport Fork, Black - user weight 260-300 lbs

+ $315.00

Front Seat Height

Choose One

13.5" (req. Super Low frame) (N/A w/ 4" x 1" Poly Caster)

14" (req. Super Low frame)

14.5" (req. Super Low frame)

15"

15.5"

16"

16.5"

17"

17.5"

18"

18.5"

19"

19.5"

20"

20.5"

21"


Wheel Locks

Help Me Choose

Choose One

Pull to Lock

Push to Lock

Push to Lock, Flush Mount

Omit Wheel Locks


Wheel Lock Options

Help Me Choose

None

Extension Handles (req. Push/Pull to Lock wheel locks)

+ $52.50

Grade Aides (req. Push/Pull to Lock wheel locks and Pneumatic tires)

+ $105.00

Rear Seat Height

Choose One

12.5"

13"

13.5"

14"

14.5"

15"

15.5"

16"

16.5"

17"

17.5"

18"

18.5"

19"

19.5"

20"


Rear Wheels

Help Me Choose

None

MAXX Performance Spoke, 24"

Mag Wheels, 20"

Mag Wheels, 22"

Mag Wheels, 24"

MAXX Performance Spoke, 20"

+ $87.50

MAXX Performance Spoke, 22"

+ $87.50

MAXX Performance Spoke, 25"

+ $87.50

MAXX Performance Spoke, 26"

+ $87.50

Superlight Spoke, 24"

+ $206.50

Superlight Spoke, 25" (req. Superlight or Plastic Coated handrims)

+ $206.50

Spinergy SPOX, 22"

+ $591.50

Spinergy SPOX, 24"

+ $591.50

Spinergy SPOX, 25"

+ $591.50

Spinergy SPOX, 26"

+ $591.50

Assembled Six-Spoke Mag w/ Treaded Tire and Composite Handrim (includes Rear Tire and Handrim, no substitutions)

+ $-14.00

Spinergy Spoke Color

Help Me Choose

None

Black

Blue

Red

White

Yellow


Spinergy Handrim Tab Option

None

Short

Long


Rear Wheel Tires

Help Me Choose

Choose One

1" Low Poly (N/A on Superlight, 25", 26" wheels or HD frame)

1" High Pressure (N/A on Mag wheels)

+ $66.50

1" Sentinel Solid (N/A on Superlight, 20" or 22" Mag wheels

+ $66.50

1 3/8" Polyurethane

1 3/8" Street Pneumatic

1 3/8" Schwalbe HS-127 (req. 24" wheels) (N/A on Mag wheels)

+ $87.50

1 3/8" Pneumatic Tires with Airless Inserts

+ $70.00

Handrims

Help Me Choose

Choose One

Aluminum Anodized

Superlight Aluminum Anodized (req. 24" or 25" Maxx, Superlight, or Spinergy wheels) (N/A on HD frame)

+ $35.00

Plastic Coated

+ $66.50

8 Vertical Projection handrims (req. 24" Mag or 22"-24" MAXX wheels)

+ $227.50

Natural Fit Standard, Omit Grip (N/A with 20" wheels or 22" Mag)

+ $241.50

Natural Fit LT, Omit Grip (N/A with 20" wheels or 22" Mag)

+ $276.50

Natural Fit Standard, Regular Grip

+ $311.50

Natural Fit LT, Regular Grip

+ $325.50

Natural Fit Standard, Super Grip (N/A with 20" wheels or 22" Mag)

+ $346.50

Natural Fit LT, Super Grip

+ $360.50

Omit Handrim


Axles

Choose One

Fixed

Quick-Release

Quad Quick Release

+ $136.50

Armrests

Help Me Choose

Choose One

Flip-Back arm, Desk length pads

Flip-Back arm, Full length pads

Swing-away Arms (10.5" - 12.5")

+ $157.50

Height Adjustable T-Arm, Desk length pad (8.5" - 13.5")

+ $206.50

Height Adjustable T-Arm, Full Length pad (8.5" - 13.5")

+ $206.50

Height Adjustable Low T-Arm, Desk length pad (7.5" - 11.5")

+ $206.50

Height Adjustable Low T-Arm, Full length pad (7.5" - 11.5")

+ $206.50

Height Adjustable Flip-Back T-Arm, Desk length pad (9.5" - 13.5")

+ $213.50

Height Adjustable Flip-Back T-Arm, Full length pad (9.5" - 13.5")

+ $213.50

Omit


Armpads

Help Me Choose

Choose One

Standard

Waterfall Arm Pads (req. non-flip-back T-Arms)

+ $17.50

Anti-Tips

Help Me Choose

Choose One

Omit Anti-Tips

Rear Anti-Tips

+ $105.00

Axle Position

None

Offset Axle Bracket

Reverse Mount Offset Axle Bracket - Not available with Swing Away Armrests