Our top-of-the-line Nicasio, the Marin Nicasio 2 steps up to our Steezy R double-butted CrMo frame and a full carbon fiber fork. There’s also a Shimano GRX RX400 2x10 speed drivetrain, powerful Shimano hydraulic brakes and fast, grippy Vee tires in 700x45. Unlike the other bikes in the Nicasio family, the 2 comes with stiff and sturdy 12mm thru-axle dropouts with UDH compatibility.