Yoshimura RS-4 MX Slip-On Exhaust Model:YZ 250FX 15-16 Essentially to be worn under

Essentially to be worn under helmet

All you have to do is plug in your 602

Produces long header torque and short header over-rev

the raw metal finish does require some extra maintenance to prevent rust build up after washing and usage in wet conditions

Reduces abrasion associated with knee braces

Yoshimura RS-4 MX Slip-On Exhaust Model:YZ 250FX 15-16 Essentially to be worn underYoshimura RS 4 Slip On Exhaust The Yoshimura RS 4 Slip On exhaust has been put to the test and has proven its capabilities at the highest level of competition. In 2010 the RS 4 muffler helped Ryan Dungey claim the AMA 450 Supercross and Motocross championships in his rookie season. The Yoshimura backed GEICO Honda team also took home both East and West Coast Supercross Lites titles in 2012 using the Yoshimura RS 4 exhaust. Utilizing the same R&D that