It was this anime from a few years ago, and it focused on a quartet of high school girls that each were into certain bikemakers. Some compare it to Top Gear and K-On. Not knowing much about bikes myself, I thought it was neat, if only for the concept.
-> Most people thought that it was an anime for bike manufacturers. Meaning it was a HUGE bike ad. Similar to Wish Upon The Pleiades on which Subaru & Gainax collaborated. -> But after reading the manga, the opposite is true. ^ Especially, there were some corrections during the transition between the manga and anime version. -> Overall, its a good series! The anime became too ecchi for its own good. -> But the manga details their antics more appropriately. -> Too bad, the anime censored this bike...I tried to look for it after seeing it: ~> And heres a good cosplay!