BMW's R nineT roadster has been a smashing success, with demand outpacing production. But if you really want to hear the boxer twin's glorious music, uncork it with Yoshimura R&D's RS-3 slip-on exhaust ($379). The aluminum canister, with a turn-down tip made of machined aluminum, includes a low-volume insert.
**Yoshimura R&D
(800) 634-9166