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Defender Max Reha US

New Special Needs 2-in-1 Car Seat Solution

Defender Max Reha US

Car Seat & Booster NOW WITH SIDE IMPACT PROTECTION

When it comes to your child, you want more than just a car seat—you want confidence on every ride.

Safety shouldn’t feel complicated—and with the Defender Max Reha, it doesn’t. Designed for modern families, this 2-in-1 car seat combines advanced protection, everyday comfort, and long-term value to keep your child safe from toddler years through big-kid milestones.

Built to grow with your child, the Defender Max Reha easily transitions from a forward-facing car seat to a high back Booster with positioning harness — so you won’t need to replace it every few years. It’s one smart investment that delivers lasting peace of mind.

What truly sets it apart? The Defender Max Reha is among the first car seats engineered to meet the latest U.S. side-impact safety standards. With full-body impact protection, an anti-torque backrest and headrest, and energy-absorbing EPE foam, it’s designed to reduce crash forces and surround your child with protection from every angle.

User Weight
(Car Seat Mode)
12 – 29,5 kg
26.5 - 65 lbs
User Weight
(Booster Mode)
18,1 - 54 kg
40 – 120 lb
User height
(Car Seat Mode)
68,6 – 144,8 cm
27 - 57"
User height
(Booster Mode)
110.1 - 144.8 cm
43.4 – 57“
Defender Max Reha US Gallery - take a look!
Order form - Car Seat
Order form - Booster
Product Registration
Downloads
360° view of Defender Max Reha
Product View · Pull to rotate
Double-click / mouse wheel for zoom

Car Seat & Booster Mode

Car Seat Mode: Weight of child: 12 – 29,5 kg / 26.5 - 65 lb & height: 68,6 – 144,8 cm / 27 - 57"
Child is secured with integrated 5-point harness. Seat must be installed with top tether and lower anchor attachments NO swivel option possible.

Booster Mode: Weight of child: 18,1 - 54 kg / 40 – 120 lb & height: 110.1 - 144.8 cm / 43.4 – 57“
Child is always secured with vehicle's 3-point safety belt. Integrated 5-point harness provides positioning support only Swivel option possible.

Why should you choose the Defender Max Reha US?
  • It meets the needs of children with following clinical pictures, who are not able to sit freely and independently: cerebral palsy, autism, hypotony syndrome of unspecific genesis, muscular dystrophy & different syndrome diseases.
  • Complies with US FMVSS 213, 213a, 213b and Canadian CMVSS 213.3 standards.
  • Head, trunk and thighs positioning supports and shoulder and crotch pads are included.
  • Variety of Special Needs accessories available (Swivel Option in booster mode ONLY)
  • Deep, supportive headrest, backrest, and seat base for 360° of immediate crash protection from front, rear and side-impact collisions.
  • The unique V-shaped, smooth-contoured seat design is a much-needed space-saver, allowing a better fit in any type of vehicle.
  • EPE energy-absorbing foam in headrest, backrest, and base.
  • 1-hand, no re-thread height adjustment harness.
  • 9-position, 1-hand height adjustable headrest; extends to 29″.
  • Up-front, 1-hand harness adjuster.
  • Anti-torque design.
  • The ultra-plush seat pad, made with durable, premium fabric and extra foam, provides maximum comfort and is removable for washing.
  • Certified for aircraft use in Car Seat Mode ONLY.
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Pioneer for rehab car seats - since 1988

For over 30 years, Thomashilfen has been supplying special children with rehab car seats in cooperation with strong partners such as Britax, Römer or RECARO. Today, we also use our know-how to develop our own rehab car seats. All of our many years of experience with the needs of children and parents flow into them.

Car Seat / Booster Mode

Defender Max Reha Car Seat – Item code: 886
Seat is secured to vehicle with lower anchor attachment + top tether.

NO Swivel option possible Age of child >12 month

Car Seat Mode requirements
Weight of child 12 – 29,5 kg / 26.5 - 65 lb
Height of child 68,6 – 144,8 cm / 27 - 57"
Defender Max Reha Booster – Item code: 889
Seat is secured to vehicle with 3-point lap and shoulder belt.
Swivel option possible
Booster Mode requirements
Weight of child 18.1 - 54 kg / 40 – 120 lbs
Height of child 110.1 - 144.8 cm / 43.4 – 57“

Technical data

Dimensions & Weights Defender Max Reha US
Seat depth 33 cm / 13.5"
Seat width 21,5 – 30,5 cm / 8.5 – 12"
Seat to head 60 – 78 cm / 23.5 - 30.5"
Shoulder height (child) 25 – 49,5 cm / 10 - 19.5"
Lower leg length (18 cm) 28 – 43 cm / (7") 11 - 17"
Overall dimensions (w x h x d) 46,3 x 67,3 x 50,8 cm / 18.25 x 26.5 x 20"
Weight of seat 10 kg / 22 lb

Videos

Installation – Defender Reha
(Booster)
Installation – Defender Reha
(Car seat mode)

More Installation Videos

Installation – Swivel base, Rigid lower anchor attachment (Booster)
Installation – Swivel base, Stabilizing bow (Booster)
Installation – Seat wedge below
Installation – Seat depth extension (Booster)
Installation – Base plate
Installation – Anterior support table
Installation – Footrest Adapter, Rigid lower anchor attachment, Footrest (Booster)
Installation – Footrest adapter, Lower anchors connection, Front Stand (Booster)
Installation – Abduction block, rigid adjustable
Installation – Abduction block soft padded
Installation – Abduction block rigid + Seat depth extension

Defender Max Reha US Gallery

Car seat Installation Help / Get your car seat inspected

Whether you’ve just installed a car seat or need help installing or using one, get help at a car seat inspection station near you. Certified technicians will inspect your car seat free of charge, in most cases, and show you how to correctly install and use it:

Take a look: www.nhtsa.gov
Find CPS Resources

Find child occupant protection laws, learn how to get your car seat checked and find answers to your car seat questions in your state or territory:

Take a look: www.cpsboard.org
Looking for educational materials for the Child Passenger Safety Field:

Defender Reha in car seat Mode:

Take a look: www.saferidenews.com/resources/adaptivescrs/defender-reha-harness-mode

Defender Reha in Booster Mode:

Take a look: www.saferidenews.com/resources/adaptivescrs/defender-reha-booster-mode

Manufacturers Alliance for Child Passenger Safety

In 2007, through the efforts of Safe Kids Worldwide, the Manufacturers Alliance for Child Passenger Safety (MACPS) was formed. Over successive years, this organization has grown, not only in membership size but also activities, and has developed a leadership structure of its own in order to promote child passenger safety.
More about MACPS

Our adaptive car seats

Defender Max Reha US - New Special Needs 2-in-1 Car Seat Solution, because safety shouldn’t feel complicated.

Defender Max Reha US

(Car Seat & Booster)
New Special Needs 2-in-1 Car Seat Solution, because safety shouldn’t feel complicated.
Axkid NEXTKID Reha US - Individual Fit: Perfect adjustment through flexible side wings and headrest

Axkid NEXTKID Reha US

(Booster)
Individual Fit: Perfect adjustment through flexible side wings and headrest
Hercules Small US - Booster that Seat offers a high level of safety and protection for your child.

Hercules Small US

(Booster)
Booster that Seat offers a high level of safety and protection for your child.
Hercules Small CAN - Adjustable support with endless possibilities - leading the way in safety innovation

Hercules Small CANADA

(Booster)
Adjustable support with endless possibilities - leading the way in safety innovation
Hercules Small CAN (FR) - Support réglable offrant des possibilités infinies - À la pointe de l'innovation en matière de sécurité

Hercules Small CANADA (FR)

(Booster)
Support réglable offrant des possibilités infinies - À la pointe de l'innovation en matière de sécurité
Hercules Prime US - Special Needs & Adaptive booster seat that grows with your child for years.

Hercules Prime US

(Booster)
Special Needs & Adaptive booster seat that grows with your child for years.
Defender Reha US - The Special Needs 2-in-1 Car Seat Solution Helping Families Enjoy Safe Travelling

Defender Reha US

(Car Seat & Booster)
The Special Needs 2-in-1 Car Seat Solution Helping Families Enjoy Safe Travelling
Defender Reha CANADA - The Special Needs 2-in-1 Car Seat Solution Helping Families Enjoy Safe Travelling

Defender Reha CANADA

(Car Seat & Booster)
The Special Needs 2-in-1 Car Seat Solution Helping Families Enjoy Safe Travelling
Defender Reha CANADA FR - La solution de siège d‘auto 2-en-1 pour les besoins spéciaux – Aider les familles à voyager en toute sécurité

Defender Reha CANADA (FR)

(Siège auto & rehausseur)
(Siège auto et rehausseur) La solution de siège d‘auto 2-en-1 pour les besoins spéciaux

    Product registration

    FOR YOUR CHILD‘S CONTINUED SAFETY

    Although child restraint systems undergo testing and evaluation, it is possible that a child restraint could be recalled. In case of a recall, we can reach you only if we have your name and address, so please fill in the registration form to be on our recall list. In order to properly register your child restraint system, you will need to provide the model number, serial number and date of manufacture. This information can also be found on a white label located on the back of the child restraint system.

    This registration is only applicable to child restraint systems purchased in the United States.

    Register your Product now
    Downloads – Defender Max Reha US
    Title Size Download
    pdf Instruction Manual – Defender Max Reha 3.29 MB Download
    pdf Instruction Manual – Defender Max Reha (FR) 3.46 MB Download
    pdf Order form - Defender Max Reha US | Car Seat 250.10 KB Download
    pdf Order form - Defender Max Reha US | Booster 466.44 KB Download
    Assembly instructions – Defender Max Reha US
    Title Size Download
    pdf Assembly instructions - Booster Conversion Kit 1.62 MB Download
    pdf Assembly instructions - Crotch Strap 675.58 KB Download
    pdf Assembly instructions - Extension de la sangle d'entrejambe (FR) 677.01 KB Download
    pdf Assembly instructions - Swivel base (2019-12) 476.13 KB Download
    Assembly instructions – Seat depth extension and Abduction block     		513.74 KB Download

    Thomashilfen is an family owned company in the 3rd generation passionate about providing safe and comfortable products for special needs. We are committed to developing and delivering products that help families and their children for more Quality of Life.

    Let us move you!