ENGEARMENT verdict: "The grease-free carbon drive not only looks cool, but it requires no lubrication and is not susceptible to rust and bad weather (I was introduced to rusty chains the hard way when I unwittingly left my first commuter bike outside uncovered for an entire year). Compared to conventional chains, belt drives are more durable, quiet and cleaner and decrease the number of services stops I make at bike shops- all pluses in my book!" Check out the full review on ENGEARMENT here.