Yoshimura G310 R/GS 18-24 Race R-77 Stainless Full Exhaust, W/ Stainless MufflerYoshimura G310 R GS 18 24 Race R 77 Stainless Full Exhaust, W Stainless Muffler The growing 300cc entry level bike offerings are amazing these days. Take the brand new BMW G 310 R, a stunning bike that is ripe to go racing enter Yoshimura R&D. We took our race bred R 77 profile and tuned it to the new Beemer's 310cc single cylinder performance needs. The end result is a Race Series system that creates 4. 9% max HP and 5. 6% max torque, while dropping