The Mobius X8 knee brace evolved from 7 years of development

Never struggle with rear wheel maintenance or chain maintenance again with this quick and easy to use

but costs a bundle

Lasts up to 50

two lock nuts

NGK - Standard Spark Plug (MAR10A-J) Options:MAR10A-J The Mobius X8 knee braceNGK standard plugs are constructed for longer life and optimum performance. Trivalent metal plating provides superior anti corrosion and anti seizing properties. Corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer. Copper core aids in heat removal. Triple seals prevent leakage