What does ECR mean? Anything you want it to. Go camping, ride the Divide Trail, disappear into the woods, and conquer any road. Surly's ECR is a super capable bike that's outfitted to explore wherever you point the front wheel. The heart of the ECR are the wheels, with wide Surly Rabbit Hole rims wrapped in 3-inch wide Surly Knard tires. Fat tires mean smooth-rolling traction, stability to spare, and just a touch of suspension to get you over the roughest terrain. Surly's requisite chromoly tubing damps road buzz and provides a nimble, responsive ride over any surface. The super wide-range Shimano drivetrain ensures that you'll get over every hill and pass, even while carrying your gear, and Avid disc brakes provide all-weather, all-terrain stopping power.