Flexx Ultra Lightweight Wheelchair - Quick Release Axles, 16" Seat - Front View
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Flexx Ultra Lightweight Wheelchair — Quick Release Axles, 16" Seat

Regular price $1,360.00 Sale price $1,210.00
Shop Pay As low as $50.41/mo
Color: Diamond Black
Choose your Options
Seat Size: 16" x 16"
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Cushions
10 options
Cu-FO 16" Universal Foam Seat Cushion
Cu-FO 16" Universal Foam Seat Cushion
CU-FO-16
✓ Compatible
+ $31.00
Cu-FO 18" Universal Foam Seat Cushion
Cu-FO 18" Universal Foam Seat Cushion
CU-FO-18
✓ Compatible
+ $31.00
Wheelchair Back Cushion Contoured 16"x17"
Wheelchair Back Cushion Contoured 16"x17"
BKF-1617
✓ Compatible
+ $55.00
Wheelchair Back Cushion Contoured 18"x17"
Wheelchair Back Cushion Contoured 18"x17"
BKF-1817
✓ Compatible
+ $65.00
Cu-GFR 16" Universal Gel/Foam Seat Cushion
Cu-GFR 16" Universal Gel/Foam Seat Cushion
CU-GFR-16
✓ Compatible
+ $72.00
Cu-GFR 18" Universal Gel/Foam Seat Cushion
Cu-GFR 18" Universal Gel/Foam Seat Cushion
CU-GFR-18
✓ Compatible
+ $72.00
CU-Ergo-16-Back Seat Cushion
CU-Ergo-16-Back Seat Cushion
CU-Ergo-16-Back
✓ Compatible
+ $155.00
Cu-Ergo 18" Memory Foam Back Cushion
Cu-Ergo 18" Memory Foam Back Cushion
CU-Ergo-18-Back
✓ Compatible
+ $155.00
Cu-Ergo 16" Memory Foam Seat Cushion
Cu-Ergo 16" Memory Foam Seat Cushion
CU-Ergo-16
✓ Compatible
+ $165.00
Cu-Ergo 18" Memory Foam Seat Cushion
Cu-Ergo 18" Memory Foam Seat Cushion
CU-Ergo-18
✓ Compatible
+ $165.00
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Accessories
13 compatible items for this model
Anti Tipper pair for KM8522 Flexx series
Anti Tipper pair for KM8522 Flexx series
AT-8522
✓ Compatible
+ $79.00
Full Length Armpad in Grey
Full Length Armpad in Grey
AP21
✓ Compatible
+ $17.00
Full Length Armpad In Blue Color With Cushion
Full Length Armpad In Blue Color With Cushion
AP22U
✓ Compatible
+ $17.00
Desk Length Armpad In Black Color With Cushion
Desk Length Armpad In Black Color With Cushion
AP23B
✓ Compatible
+ $17.00
Desk Length Armpad In Blue Color With Cushion
Desk Length Armpad In Blue Color With Cushion
AP23U
✓ Compatible
+ $17.00
8"x1" Front Caster in Black with 5/16" Bearing
8"x1" Front Caster in Black with 5/16" Bearing
C81B
✓ Compatible
+ $22.00
8"x1" Front Caster in Black with 7/16" Bearing
8"x1" Front Caster in Black with 7/16" Bearing
C81B-716
✓ Compatible
+ $22.00
Seat Belt With Plastic Clamp and Easy To Adjust
Seat Belt With Plastic Clamp and Easy To Adjust
SB22
✓ Compatible
+ $14.00
Seat Belt Auto Style With Push Button To Release and Easy To Adjust
Seat Belt Auto Style With Push Button To Release and Easy To Adjust
SB99-48
✓ Compatible
+ $27.00
Small universal Carry Pouch for wheelchair
Small universal Carry Pouch for wheelchair
CP2
✓ Compatible
+ $14.00
Large universal Carry Pouch for wheelchair
Large universal Carry Pouch for wheelchair
CP4
✓ Compatible
+ $20.00
3 in 1 armrest pouch, handbag and shoulder bag
3 in 1 armrest pouch, handbag and shoulder bag
CP22-LUX
✓ Compatible
+ $46.00
Universal Cup Holder for Wheelchair or Walker
Universal Cup Holder for Wheelchair or Walker
CUPH-100-BK
✓ Compatible
+ $15.00
🛒
Add-ons
Canes, bed rails, tables & more
Bedrail Assist with Padded Handles — Bed Safety Rail for Seniors
Bedrail Assist with Padded Handles — Bed Safety Rail for Seniors
BEDRL-M2
+ $73.00
Padded Bed Assist Rail — Safety Grab Bar with Non-Slip Grip
Padded Bed Assist Rail — Safety Grab Bar with Non-Slip Grip
ASSRL-100
+ $40.00
Folding Cane with Ergonomic Handle — Collapsible Walking Cane, Black
Folding Cane with Ergonomic Handle — Collapsible Walking Cane, Black
FC2-BK
+ $24.00
Folding Cane with Ergonomic Handle — Collapsible Walking Cane, Silver
Folding Cane with Ergonomic Handle — Collapsible Walking Cane, Silver
FC2-SI
+ $24.00
Quad Cane with Small Base — Lightweight Walking Cane, Black
Quad Cane with Small Base — Lightweight Walking Cane, Black
QC2-BK
+ $32.00
Quad Cane with Small Base — Lightweight Walking Cane, Silver
Quad Cane with Small Base — Lightweight Walking Cane, Silver
QC2-SI
+ $32.00
Overbed Table with Wood Finish — Height Adjustable Bedside Tray
Overbed Table with Wood Finish — Height Adjustable Bedside Tray
OT10
+ $82.00

Availability: In stock
Weight Capacity286 lb
Frame MaterialAircraft-Grade Aluminum
Large Outdoor Casters8" Wheels
Travel & StorageEasy Fold

Product Overview

The Karman Flexx is an ultra-lightweight fully adjustable manual wheelchair engineered to bring custom-chair-level adaptability to a competitive price point. Built by Karman Healthcare with aircraft-grade T6 aluminum and a globally patented S-Shape seat frame, it offers six seat size combinations, quick-release axles, center-of-gravity adjustment, and back angle adjustment in one chair. A breakthrough option for users who need a precision fit without the expense of a fully custom build.

Key Features

Six seat size combinations for a precise fit
Center-of-gravity and back angle fully adjustable
Quick-release axles for fast tool-free wheel removal
Patented S-Shape seat frame for ergonomic pressure relief
Flip-back armrests with one-touch height adjustment
24-inch flat-free polyurethane high-tread rear wheels

Product Highlights

The Flexx was designed around the insight that most wheelchair users need adjustability but can't afford a custom chair — so Karman built in the key adjustments that matter most: center of gravity, seat height, back angle, caster fork angle, and multiple seat depth and width options. Bright color-coded lockers make the swing-away footrest, flip-back armrest, and backrest adjustments self-explanatory, so users can configure the chair without needing a technician. A mini tool kit is included so any further adjustments can be made at home with two Allen keys and a wrench.

Dimensions

Available Seat Sizes
16" x 16", 16" x 18", 18" x 16", 18" x 18", 18" x 20", 20" x 18"
All widths available — choose your size above.
Overall Width (Open)
23"
Width in use — standard doors are 28"–32".
Folded Width
15.0 in
Folded for car storage and transport.
Backrest Height
1619.0 in
Higher gives better posture support.
Seat-to-Floor Height
1521.0 in
Affects ease of transfers from bed and chairs.
Seat Depth
16.0 in
Deeper seat gives better thigh support.
Rear Wheel Size
24.0 in
Larger wheels allow more self-propulsion.
Front Caster Size
8.0 in
Smaller casters for smooth indoor use.

Frame & Build

Brake Type
Push-to-lock
Controls for stopping and parking.
Armrest Style
Flip-back
Flip-back makes transfers easier.
Legrest Style
Swing-away
Swing-away allows closer surface access.
Foldable
Yes
Folds for car transport and home storage.
Frame Material
Aircraft-Grade Aluminum
Affects weight and durability.
Weight Capacity
286.0 lb
Max safe user weight for this model.

General

ModelKM8522Q
Product Weight28.5 lb — Heavy — two-person lift recommended.
AssemblyRequired — tools and instructions included.
Airline ApprovedYes — FAA Compliant
CertificationFDA 510(k) Registered CE Certified ISO 9001:2015

Shipping & Returns

ShippingFree — all 48 contiguous US states. No minimum.
Ships At44.0 lb
Returns30-day — new & unused in original packaging. Email support@ozzocare.com to start.

Warranty Coverage

Wear Parts0 days
Battery0 months
Upholstery0 months
Electronics0 years
Parts1 years
Frame999 years
Frame WarrantyLimited Lifetime Warranty

What's Inside the Box

11 items included

Flexx Wheelchair Frame (Folded)
24" Quick-Release Flat-Free Spoked Rear Wheels with Ergonomic Handrims
8" × 1" Polyurethane Front Casters
Swing-Away Footrest (Left)
Swing-Away Footrest (Right)
Push-to-Lock Wheel Brakes (Pre-installed)
Height-Adjustable Flip-Back Armrest with Padded Armpad (Left)
Height-Adjustable Flip-Back Armrest with Padded Armpad (Right)
Breathable Mesh Seat Upholstery
Breathable Mesh Backrest Upholstery
User Manual

Assembly Required

Minimal assembly required — quick and tool-free setup

~10–15 mins

Primary Use Cases

5 real-world scenarios for this product

🏠 Home & Indoor Mobility

Moves confidently through home environments with a maximum open width of 27" — clear passage through any standard 32" interior doorframe. The configurable axle height and center of gravity adjustment let you dial in exactly the right posture for indoor navigation, whether you self-propel across carpet, hardwood, or tile.

🏥 Doctor Visits & Medical Appointments

At 29 lbs with quick-release axles, this chair breaks down fast for loading into any car trunk. Swing-away footrests clear the way for exam table transfers, and the folding backrest cuts the footprint even further for crowded clinic waiting areas. Supports up to 250 lbs across seat sizes ranging from 16"×16", 16"×18", 18"×16", 18"×18", 18"×20", 20"×18".

🌳 Outdoor Walks & Fresh Air

The 24" quick-release rear wheels roll reliably on paved sidewalks, ramps, and smooth outdoor terrain. Center of gravity adjustability means you can tune the chair for different outdoor conditions — forward for easier pushing on flat ground, back for better stability on inclines. A versatile outdoor companion for daily users.

✈️ Travel & Car Transport

Folds flat in seconds and stows in most standard car trunks. Quick-release axles pop the wheels off for an even more compact storage profile. Available in six seat dimension combinations (16"×16", 16"×18", 18"×16", 18"×18", 18"×20", 20"×18"), making it one of the most configurable transport-ready chairs in its weight class.

🔧 Long-Term Custom Fit

Where the Flexx truly stands out is adjustability: axle height, seat depth, backrest angle, and center of gravity are all configurable without tools. For users who require a precise fit for posture, pressure relief, or self-propulsion efficiency, this is the chair that adapts to you — not the other way around. Supports up to 250 lbs.

Who This Product Is For

13 user profiles matched

Seniors Limited mobility users Long-term mobility support Short-term mobility support Home use Travel use Indoor mobility Outdoor mobility Fall-risk seniors Post-hospital discharge patients Hip replacement recovery Home care environments Assisted living facilities

Detailed Information

Primary Users

Seniors who need a dependable daily wheelchair they or a caregiver can manage without physical strain

Adults in short-term recovery (post-surgery, illness, injury) who need a lightweight option for the recovery period

Long-term mobility users who prioritize ease of transport and compact storage without giving up function

Family caregivers and home health aides who load and unload the chair from vehicles multiple times weekly

Post-hospital discharge patients transitioning to home care who need an immediate, easy-to-use mobility solution

Best Suited Environments

Home environments where compact storage and easy one-hand folding are daily priorities

Medical appointment routines where quick car trunk loading and unloading saves time and physical effort

Community outings and errands where a lightweight portable chair makes the difference between going and staying home

Assisted living and home care settings where staff manage multiple residents and value easy-handling equipment

FAQs

I'm 275 lbs and recovering from hip surgery — is the Karman Flexx wheelchair strong enough for me to use daily?

The Karman Flexx wheelchair has a 286 lb weight capacity, so it can safely support your weight during recovery. Built with aircraft-grade T6 aluminum and Karman Healthcare's patented S-Shape seat frame, this ultra-lightweight manual wheelchair is engineered for durability while remaining easy for caregivers to manage at just 28.5 lbs. The quick-release axles and flip-back armrests make transfers easier during your hip surgery recovery period.

Will this lightweight wheelchair fit through my narrow bathroom door and hallways at home?

Yes, the Karman Flexx wheelchair is specifically designed for home mobility with a maximum open width of 27 inches, ensuring clear passage through any standard 32-36 inch interior doorframe. The ultra-lightweight aluminum construction and foldable design make it easy to maneuver through tight spaces like bathrooms and hallways. When folded, it becomes extremely portable for storage in closets or transport.

Can my wife easily fold this wheelchair and lift it into our car trunk by herself?

At just 28.5 lbs, the Karman Flexx is one of the lightest manual wheelchairs available, making it manageable for most caregivers to lift and load. The quick-release axles allow the wheels to pop off in seconds, and the foldable aluminum frame collapses for compact car trunk storage. The flip-back armrests and swing-away footrests also make loading easier by reducing the overall bulk when folded.

How does this Karman wheelchair handle outdoor surfaces like sidewalk cracks and small curbs?

The Karman Flexx features 24-inch quick-release rear wheels with ergonomic handrims and 8-inch polyurethane front casters that provide good outdoor mobility for an ultra-lightweight wheelchair. While it's primarily designed for home and indoor use, the aircraft-grade aluminum frame and adjustable center of gravity help navigate sidewalks and small obstacles. For extensive outdoor use on rough terrain, you might want to consider a more robust outdoor wheelchair model.

What's the difference between this Flexx wheelchair and a standard hospital wheelchair for long-term use?

The Karman Flexx offers custom-chair-level adjustability with six seat size options and configurable axle height, while standard hospital wheelchairs are one-size-fits-all and much heavier. At 28.5 lbs with aircraft-grade aluminum construction, it's significantly lighter than typical 40+ lb hospital chairs, making daily transport easier. The patented S-Shape seat frame and flip-back armrests provide better comfort and functionality for long-term mobility support compared to basic institutional wheelchairs.

Does Medicare cover the Karman Flexx wheelchair or do I need to pay out of pocket?

Medicare Part B typically covers 80% of manual wheelchairs when deemed medically necessary by your doctor, and the Karman Flexx qualifies as durable medical equipment. You'll need a prescription and documentation showing you need a wheelchair for mobility in your home, and you may need to work with a Medicare-approved supplier. The remaining 20% cost plus any deductible would be your responsibility, though supplemental insurance may help cover this portion.

If something breaks on this lightweight wheelchair in the first year, what warranty coverage do I have?

Karman Healthcare provides warranty coverage on the Flexx wheelchair, with the aircraft-grade T6 aluminum frame typically covered for structural defects. The quick-release axles, flip-back armrests, and wheel components are built for durability, but specific warranty terms vary by component. Contact OzzoCare or Karman Healthcare directly for complete warranty details and coverage periods, as they stand behind their ultra-lightweight wheelchair construction quality.

I have balance issues and fall occasionally — is this 28.5 lb wheelchair stable enough for someone like me?

The Karman Flexx wheelchair features push-to-lock wheel brakes and an adjustable center of gravity system that enhances stability for users with balance concerns. The aircraft-grade aluminum frame with patented S-Shape design provides a sturdy 286 lb weight capacity while the configurable axle height lets you optimize stability for your specific needs. However, if you experience frequent falls or need additional stability features, consult with your healthcare provider about whether a manual wheelchair is appropriate or if a different mobility solution would be safer.

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