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Asterisk Ultracell Knee Brace
  • Asterisk Ultracell Knee Brace
  • Asterisk Ultracell Knee Brace

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Asterisk Ultra Cell Knee Brace - Black

The UltraCell is built on 10+ years of time-tested and proven designs of the original Cell Knee Protection System. Those original concepts have been refined, improved, and entirely re-engineered to create the UltraCell. The UltraCell is, as its predecessor, completely customizable to the leg while remaining extremely rigid.

A.C.M. Frame

  • Anatomically correct design
  • Carbon fiber epoxy matrix
  • Rigid & Lightweight, impact distributing structure

Asymmetry Glide Hinge

  • Tracks the natural "rolling-gliding" motion of the knee joint
  • Asymmetrical design allows each hinge to set properly 
  • Allows for automatic tibia alignment of lower frame
  • Condyle shims for fine tuning fit

A.R.C. Cuff

  • Adjustable retention control
  • Multiform rigid lateral support
  • Built in anti rotation connection
  • Stainless steel retention strips 
  • Inverted adjustment increases lateral rigidity

Anti-Rotation Tether

  • Links the brace to the boot making them as one
  • Transfers forces of a lower leg rotation
  • Adjustable to suit each individual

Dual Independent Securement system

  • Medial macro-adjustment
  • Superior security to strapping
  • Boa® closure system provides smooth even closure and no pressure points
  • Quick Release tabs

Tele-tri Patella cup

  • Telescoping three piece design
  • High impact nylon 6 material
  • Full range of motion coverage of the knee cap
  • Thermo-formed EV50 Shock absorbent foam padding

Thermo-formed padding

  • Thermo-formed for precise fit
  • Forms to leg shape using your body heat

Water Resistant 


To ensure proper fit, circumference measurements should be taken directly on the skin with the leg straightened, using a soft tape measure. (If soft tape measure is not available, a piece of string or yarn may be used to calibrate the leg's diameter.) Locate the middle of the kneecap and measure around the leg. Measurements should be taken directly on the skin with a straight leg.

Size (in) (cm)
Small 13" - 13 7/8" 33.02 - 35.24
Medium 14" - 14 7/8" 35.56 - 37.78
Large 15" - 15 7/8" 38.10 - 40.32
X-Large 16" - 16 7/8" 40.64 - 42.86
XX-Large 17" - 18 1/4" 43.18 - 46.36

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Have a functionality, fit, or otherwise product-specific question about the Asterisk Ultracell Knee Brace? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Asterisk Ultracell Knee Brace
Already Asked: 1 Question, 1 Answer
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A shopper asked: Hi, do i have to use a knee pad on top of the knee brace? Oct 15, 2012
Answer this · Send to friends Good question? Yes (0) No (0)
RevZilla: The Asterisk Ultracell Knee Brace can not be used with knee pads, and can only be used on its own, over or under your pair of riding pants. Oct 16, 2012
Reply to RevZilla Good answer? Yes (0) No (0)
Product Style RevZilla SKU ID Manufacturer Product # Availability
Left / SM 828000 664-0037L Out of Stock
Left / MD 828001 664-0038L Out of Stock
Left / LG 828002 664-0039L Out of Stock
Left / XL 828003 664-0040L Out of Stock
Right / SM 828004 664-0037R Out of Stock
Right / MD 828005 664-0038R Out of Stock
Right / LG 828006 664-0039R Out of Stock
Right / XL 828007 664-0040R Out of Stock
Pair / SM 827996 664-0037 Out of Stock
Pair / MD 827997 664-0038 Out of Stock
Pair / LG 827998 664-0039 Out of Stock
Pair / XL 827999 664-0040 Out of Stock