Tired o the chain popping while riding across rough ground? worried about the chain getting loose while riding? this will greatly help along with reduce chain wear by keeping the chain under steady tension while riding. these are not a knockoff of other versions that have been available for years, but a substantial improvement with actual Delrin bushings and sleeves for long service life unlike others available. 

These are a direct bolt on behind your foot peg and no setup required. 

However these will come in raw steel and will need powdered or painted in your preferred color to prevent rust.