Axiom S Wheelchair Cushion by Ki Mobility
£162.00Each
Axiom Posterior Lateral Back
£688.50Each
Axiom Posterior Back
£641.25Each
The Ki Mobility Axiom Posterior Back is a lightweight, adjustable wheelchair backrest designed to improve comfort, trunk support and everyday seating stability while allowing freedom of movement for active wheelchair users.
Need help choosing the right size or setup? Younique Healthcare can advise on suitability, compatibility and assessment options.
SKU:
6742
Categories: Wheelchair Seating & Posture, Wheelchair Backrests
Tags: Back Cushions, care worker, healthcare, mobility, occupational therapy, physio, Seating, wheelchair backrest
Description
Description
Ki Mobility Axiom wheelchair backrest
Axiom Posterior Back
The Axiom Posterior Back is designed for wheelchair users who need reliable posterior trunk support without feeling over-restricted. It combines a shaped back shell, quality foam, adjustable lumbar support and compact mounting hardware to create a secure, comfortable backrest for everyday use.
This product can be purchased online where the correct size is known. If you are unsure about size, support level, chair compatibility or posture needs, Younique Healthcare can help before you order.
Everyday posterior support
Shaped support to help position the lumbar spine while still allowing movement for daily wheelchair use.
Adjustable fit
Height, depth, width and angle adjustment help the backrest fit both the wheelchair and the individual user more accurately.
Compact DEX hardware
DEX hardware is designed to use minimal space on the wheelchair back posts while allowing straightforward fitting and adjustment.
Comfortable construction
High-resiliency foam and durable cover materials help balance comfort, support and day-to-day durability.
Who is it suitable for?
The Axiom Posterior Back may suit wheelchair users who need improved back support, comfort and seating stability, but who do not require the deeper lateral support of a posterior lateral or deep lateral backrest.
- Users who need improved posterior trunk support
- Active wheelchair users who still need freedom of movement
- Manual or powered wheelchair users needing a more supportive backrest
- People who need a cleaner, more adjustable alternative to a basic sling back
- Wheelchair setups where backrest position, depth and angle need fine tuning
Assessment note
Wheelchair backrests affect posture, pressure, propulsion, transfers and comfort. If there is pain, asymmetry, pelvic instability, scoliosis, pressure risk or a complex seating history, we recommend seeking advice before ordering.
Younique Healthcare can help with product selection, compatibility, seating assessment and quote support where needed.
Key features

DEX hardware
Compact mounting hardware designed to work with different wheelchair back post styles, sizes and tube diameters. The clamp takes up minimal space on the back cane and supports a clean fitting setup.

Independent adjustability
Height, depth and angle can be adjusted to improve fit. The indexed bracket design helps with repeatable alignment and allows the backrest position to be refined with the user in the chair.

Simple attachment
The receivers help guide the back into place securely. The design supports everyday use while allowing removal where appropriate for transport, adjustment or maintenance.

Premium construction
The Axiom Back range uses a shaped back shell, quality foam and durable cover materials to support comfort, stability and long-term use.
Technical information
| Product | Ki Mobility Axiom Posterior Back |
|---|---|
| Product type | Wheelchair posterior backrest |
| Support style | Posterior trunk support with lumbar shaping |
| Width range | 12" – 22" / 30.5 – 55.9 cm |
| Weight capacity | 300 lb / 136 kg |
| Height adjustability | Approx. 3.25" / 8.25 cm |
| Width adjustability | Approx. 2" / 5.08 cm |
| Depth adjustability | Approx. 1.5" / 3.81 cm |
| Angle adjustability | Approx. 20° |
| Foam thickness | Approx. 1.25" / 3.15 cm |
Choosing the right Axiom backrest
The Posterior Back is part of the wider Axiom Back range. It is generally chosen where the user needs improved posterior support but does not need the increased lateral contour of the Posterior Lateral, Lateral or Deep Lateral models.
Choose Posterior Back when
- The user needs improved back support
- Freedom of movement remains important
- Deep lateral trunk control is not required
- The chair needs a cleaner, adjustable backrest setup
Ask us first when
- There is significant postural asymmetry
- The user leans strongly to one side
- There is pressure risk or pain
- You are unsure which Axiom contour is right
Frequently asked questions
Can I order this online?
Yes, where the correct size and setup are already known. If you are unsure, contact Younique Healthcare before ordering.
Is this the same as the Axiom Posterior Lateral Back?
No. The Posterior Back provides posterior support with less lateral contour. The Posterior Lateral Back provides more side support for users needing greater trunk positioning.
Will it fit my wheelchair?
Compatibility depends on the wheelchair frame, back post size, seat width, existing seating setup and the user’s posture. We can help check this before purchase.
Do I need an assessment?
If this is a like-for-like replacement and the size is known, an assessment may not be needed. If posture, comfort, pressure or fitting is uncertain, advice is recommended.
Downloads
Technical Info
| Weight | 4 kg |
|---|---|
| Dimensions | 60 × 40 × 60 cm |
| Width Range |
12" – 22" 30.48 – 55.88 cm |
| Weight Capacity |
300 lbs. 136 kg |
| Height Adjustability |
3.25" 8.25 cm |
| Width Adjustability |
2" 5.08 cm |
| Depth Adjustability |
1.5" 3.81 cm |
| Angle Adjustability |
20° |
| Total Foam Thickness |
1.25" 3.15 cm |
| Backrest Size |
8×12 ,8×14 ,8×16 ,8×18 ,8×20 ,10×14 ,10×16 ,10×18 ,10×20 ,10×22 ,12×12 ,12×14 ,12×16 ,12×18 ,12×20 ,14×14 ,14×16 ,14×18 ,14×20 ,14×22 ,16×14 ,16×16 ,16×18 ,16×20 ,16×12 ,18×14 ,18×16 ,18×18 ,18×20 ,18×22 |
| Brand |
Axiom |
Need help choosing this product?
Younique Healthcare can advise on suitability, assessment, supply route and quote options.
Call 0121 630 3850 or email sales@youniquehealthcare.co.uk.
Need help choosing the right equipment?
Speak to Younique Healthcare for practical product advice, assessment support and help choosing the most suitable route.












