The Heavy Duty BK Kits consist of one carbon tube, 2 tube clamps, and one 4-ear connector.  These systems are available in 375lb, 450lb, and 500lb weight limits.  The tube is made of carbon and the prosthetic components are titanium.  These kits have 2 year warranties.     

The Heavy Duty BK Kits are intended to be used for large or highly active below the knee amputees.

375lb BK System
Weight Limit:  375lbs (170kg)
Unit Weight:  15.56 ounces (441 grams)

450lb BK System
Weight Limit:  450lbs (204kg)
Unit Weight:  23.6 ounces (670 grams)

500lb BK System
Weight Limit:  500lbs (226kg)
Unit Weight:  26.2 ounces (744 grams)