Spirit Medical MA900 Medical RAC
Get all the clinical advantages and benefits of the RAC (Rehabilitation Adjustable Crank) from your existing upright or recumbent exercise bikes

The MA900 flexibly accommodates patients by its incrementally adjustable cranks, from as little as 15°. Smaller degrees render smaller circular lower body motions. As a result, patients with limited ROM can start therapy earlier than by using other rehab equipment. Ultimately, patients acquire passive and active mobilization for hips, knees and ankles.
MA900 on recumbent
MA900 RAC upgrade kit


8 position swivel seat with seat belt The RAC upgrade kit fits both upright and recumbent exercise bikes that have a 3 piece crank assembly. It simply replaces the existing bike crank with no need to remove the enclosure
Articulating hand grips NOTE: The passive arm can also be installed on a standard crank arm.


- Incrementally adjustable cranks accommodate patients with limited ROM
- Adjusts from as little as 15 degrees to full range
- Passive and active mobilization for hips,knees and ankles
- Isolated closed kinetic chain strengthening exercises for quads & hams
- Provides recordable, repeatable settings


- Start therapeutic cycling earlier in the rehabilitation process
- Easily tracks outcomes and improvements
- Begin therapy earlier despite limitations in range of motion
- Exercise in the pain-free zones thereby reducing the patient's ”fear factor”
- Provides recordable, repeatable settings

Spirit Medical MA900 RAC


Patients with the following conditions will benefit:

- Total knee or hip replacements
- ACL, MCL & PCL repairs
- Ligamentous tears
- Patella femoral conditions
- Tibial stress injuries
- Arthritic conditions
- Neurological conditions
- Muscular sprains
- Tendonitis

Once installed on your existing exercise bike, the RAC enables your patients to:

- Exercise safe and free of impact and pain
- Begin riding the bike earlier in their treatment regimen than before installing the upgrade kit
- Incrementally adjust bike cranks to accommodate the patient's imited range of movement
- Exercise both actively and passively*
- Exercise safe in a ”Closed Kinetic Chain”
- Reduce muscle atrophy

*Passive Arm

With the addition of the passive arm, a patient with insufficient strength may actually passively range the involved limb by pedaling
with the uninvolved limb within his/her
prescribed range-of-motion.


All parts 1 year