Flexible rubber nose piece

there are light steel sprockets out there

Spare moto tube compartment

Hinge pin used on clamp body is made of light weight and durable Ti6AI-4V

Leatt - Moto 5.5 Flexlock Boots Lenses Flexible rubber nose pieceThe Moto 5. 5 FlexLock Boot is built for riders who demand pro level performance, exceptional comfort, and serious protection. With no break in required, its track ready straight out of the box. The FlexLock system helps reduce forces to your ankles and knees by allowing controlled lateral flex before locking outhelping you ride harder, longer. The SlideLock closure makes securing the boot easy, even with gloves on, and ensures a great top seal. A low