Anti-Swivel Collar
Anti-swivel collars (standard size shown here) are needed on the Made in China or Hydro cylinder to prevent rotational movement when a smart reflector and sensor are installed. Rotational movement of the cylinder causes errors with Smart. Install an anti-swivel collar on each end of the cylinder as shown below.
Narrow Anti-Swivel Collar
On the Ab Back, Leg curl and older Leg Press, the cylinder is bolted on and the mounting area is small. A narrow anti-swivel collar, shown to the right, is also available which makes it easier to install - you will not need to bend the cylinder mounting brackets.
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