WHISTLER 3.7 FEATURESNEW SHIMANO DEORE 10-SPEED SHIFTING AND HYDRAULIC LOCK-OUT SUNTOUR XCT30 FORKVISUAL HIGHLIGHT: SKINWALL TYRESOPTION TO MOUNT PANNIER RACK AND MUDGUARDYOUR SIZE, YOUR CHOICEWith the WHISTLER, you can select the ideal wheel size to suit your height and needs. The WHISTLER in sizes..