This is a Specialized HardRock bicycle with a brand new Tanaka Purefire PF4000 low emission 2-cycle engine and an older Staton mounting kit. Bike needs some TLC (true the wheels, clean and lube the chain, adjust brakes and shifters, etc.). Will sell right now for $400 cash. If I have to take the time to make everything perfect, the price will go up accordingly. Fires right up. Dan 415.892.6057.