Karman XO-55 Manual Standing Wheelchair – Stand Independently, Improve Circulation, and Reduce Sitting Pressure

The Karman XO-55 Horizon is a manual standing wheelchair built with a lightweight aluminum frame and a gas-spring-assisted standing system. It allows manual adjustment between seated and standing positions using a mechanical handle and stabilizing straps.

The design uses no electrical power and keeps the overall weight low for easier handling and transport.

Frame and Build Quality

The frame is made from 6061 T-6 aluminum, keeping overall weight low while maintaining a solid structure. Reinforced struts and a rear bar support the frame during operation. The backrest folds, and the rear wheels detach with a quick-release mechanism for compact storage or transport. The frame has a white powder-coated finish with transparent composite side panels for a simple, clean appearance.

Seat and Adjustments

The seat and back use breathable nylon upholstery. Armrests are padded, flip back for transfers, and can be removed if required. Seat depth and backrest angle are adjustable, and flip-up footplates allow clear access when entering or exiting the chair. Standard seat height is 21 inches.

Wheels and Handling

The XO-55 has 24-inch rear pneumatic wheels with quick-release axles and 6-inch front casters with flat-free poly-foam tires. This combination supports smooth rolling on indoor or outdoor surfaces. Scissor-style wheel locks hold the chair securely when parked.

Manual Standing Function

The standing system uses gas-spring assistance and a standing handle for controlled transitions between seated and standing positions. Chest, pelvic, and knee straps are included to help maintain alignment during motion. The mechanism is fully mechanical, no battery or motor is required.

XO-55 Manual Standing Wheelchair Overview

Sling Upholstery Detail 

Reinforced Aluminum Manual Standing Frame

Gas-Spring Assisted Standing Design

Total Weight: 55 lbs (41 lb frame)

Reinforced Strut Bar for Frame Stability

24″ Pneumatic Rear Wheels and Flat-Free Front Casters

Karman XO-55 Manual Standing Wheelchair – Key Details

• • Total weight: 55 lb including wheels (41 lb frame)

  • Frame material: 6061 T-6 aluminum

  • Quick-release caster forks and rear wheels for easier handling and transport

  • White powder-coated frame finish

  • Transparent composite side panels

  • Reinforced struts and rear bar for frame stability

  • Manual standing handle with gas-spring assist

  • Lightweight frame with manual standing mechanism

  • Nylon sling seat and backrest upholstery

  • Rear wheels: 24″ × 1″ pneumatic tires

  • Front casters: 6″ × 1¼″ poly-foam, flat-free

  • Flip-back padded armrests for transfer access

  • Flip-up footplates for clear entry and exit

  • Chest strap, pelvic belt, and knee strap included

  • Scissor-style wheel locks for secure parking

Models Available

• XO-55 18" Width and available in 18", 19" and 20" Depth
• XO-55-L 18" Seat width with Extended seat depths available,
• XO-55-N 16" Seat Width and available in 18", 19" and 20" Depth
• XO-55N-L 16" Seat Width with extended seat depth available in 21" and 22" Depth

Documents

Karman Healthcare XO-55 Product Manual

Product Specifications

Karman XO-55 Product Video

Warranty Information

• Karman Healthcare XO-55 Manual Standing Wheelchair is covered by a 3-year warranty on the frame and a 1-year warranty on the electrical parts, motor, transaxle, and brake.