Not many riders know about the basic description of this bike. From what I know, it's an entry level 7 speed normal commuting bike but the large 21" frame makes it different from the rest The ride rolls on AlexRIms P18(559x18). I changed the tires the very same day i got her with japan made Panaracer Trailraker PR 26x2.1. Yeah, some people may have guess it. I'm into off road riding. but the old tires already cracked and  obviously the compound wasn't roadworthy. the RST321TL still runs pretty good. but i changed the BB to a new one after i found some play on the crank. sealed bearings sometimes sucks. all cables brand new plus Shimano combo Vbrake and shifter.brake pads both for V and rotor all changed new. and today i got myself wellgo pedals,TOKEN grip and Selle Royal saddle. wat more can i say. the bike is ready to go off road anytime...so, any riders who's into nature trekking with your bike, give a buzz anytime.