YOSHIMURA KAWASAKI ZX6R 2013-15 Street RS4 636 Aerodynamic speed hump

Aerodynamic speed hump

Waterproof internal pocket

Full-grain leather upper

and again in 2012 winning both 250 Supercross Lites titles

thanks to being developed in the heat of competition

YOSHIMURA KAWASAKI ZX6R 2013-15 Street RS4 636 Aerodynamic speed humpThe work that went into developing the RS 4 muffler design paid big dividends in 2010 with winning the AMA 450 Supercross and Motocross Championship series, and again in 2012 winning both 250 Supercross Lites titles. That same R&D has been directed to developing the current generation RS 4 for Road Racing a unique design that provides an unrivaled combination of power and a quiet exhaust note. The RS 4 features a Polyresonant duplex chamber, a two