Super Hemi Kit for Wheelchairs Lowers Seat Height to 15.5 Inch

For wheelchair users who need a lower seat height — whether for foot propulsion, easier lateral transfers, or a better fit for shorter stature — the Super Hemi Kit provides a direct, reliable solution. Designed to lower the seat height of compatible Drive and ProBasics wheelchair models to 15.5 inches, this kit installs securely and provides a stable, long-term seating adjustment without requiring a new wheelchair. Compatible with the Sentra Plus, Astaire Plus, Viper, and Viper Plus models, it is a practical upgrade for home care, rehabilitation, and facility environments where seat height customization is needed.

Key Features

• Lowers wheelchair seat height to 15.5" — improves accessibility for foot propulsion and lateral transfers
• Compatible with Sentra Plus, Astaire Plus, Viper, and Viper Plus wheelchair models
• Durable construction — built for long-term daily use
• Practical alternative to purchasing a new wheelchair for users who need a lower seat height
• Suitable for home care, rehabilitation, and facility environments

Specifications

• SKU: 10957HK
• UPC: 822383125411
• Seat Height After Installation: 15.5"
• Compatible Models: Sentra Plus, Astaire Plus, Viper, Viper Plus
• Product Type: Wheelchair seat height adjustment kit
• Warranty: Manufacturer warranty applies

Ideal For

• Wheelchair users who use foot propulsion and need a lower seat height to reach the floor comfortably
• Users with shorter stature for whom a standard seat height creates an uncomfortable or unsafe seating position
• Individuals who perform lateral transfers and benefit from a lower seat height to reduce the height differential between the wheelchair and the transfer surface
• Rehabilitation and clinical settings where seat height customization is part of a patient's mobility or positioning plan
• Caregivers and facilities looking to adapt an existing compatible wheelchair rather than purchasing a new unit

Frequently Asked Questions

What is a hemi seat height and why does it matter?
A hemi seat height refers to a lower-than-standard seat height, typically around 15.5 inches from the floor, compared to the standard 18–19 inches on most adult wheelchairs. This lower position is beneficial for users who propel the wheelchair with their feet rather than their hands — a technique often used by individuals with hemiplegia or limited upper body strength. It is also useful for users with shorter leg length who cannot comfortably reach the floor from a standard seat height, and for those who perform lateral transfers to surfaces that are lower than a standard wheelchair seat.

Which wheelchair models is this kit compatible with?
The Super Hemi Kit is compatible with the Drive Medical Sentra Plus, Astaire Plus, Viper, and Viper Plus wheelchair models. If you are unsure whether your specific wheelchair model is compatible, check the model name on your wheelchair frame or contact us with your wheelchair's model number before ordering. Installing this kit on an incompatible wheelchair model may result in an improper fit or unsafe seating configuration.

Does installing this kit affect the wheelchair's stability?
Lowering the seat height changes the center of gravity of the wheelchair, which can affect stability — particularly rear stability. The Super Hemi Kit is engineered for use with the compatible models listed and is designed to maintain safe stability at the 15.5" seat height when installed correctly. If you have concerns about stability after installation, consult with a physical therapist or seating specialist who can assess the configuration for your specific user.

Is professional installation required?
The kit is designed to be installed on compatible wheelchair models and does not require specialized tools for most configurations. However, if you are not comfortable with wheelchair modifications or are unsure about the installation process, we recommend having the kit installed by a qualified rehabilitation equipment technician or contacting the manufacturer for installation guidance. Proper installation is important for safety and long-term performance.