The ZW4 Disc The ZW4 is a women’s-specific bike through-&-through. Not only are the frame & fork specifically engineered for women, so are the handlebar, stem & lightweight saddle. A 11-speed Shimano 105 drivetrain means the shifting will always be crisp & precise. Whether your plan is to ride on your own, participate in centuries or do your first race, this is one bike with the versatility to shine everywhere you go. Shimano 105 Drivetrain With an additional gear & a substantial weight saving over its lower end relations, the 105 11 speed groupset offers great mid-range performance. The 105 shifters have the same dual control setup as the top end groupsets & also feature an optical window to show which gear you have selected. Shifting is precise & consistent, right the way through the 11 speed cassette. With its two piece hollow axle design, the 105 Hollowtech II chainset is both stiffer & lighter than a square taper chainset. Mounting the large diameter bearings outboard of the bottom bracket shell also provides increased stiffness & bearing life over standard cartridge units. With 50/34 compact gearing, you can tackle even the steepest climbs with complete confidence. TRP Hydro Mechanical Disc Brakes The TRP HY-RD (pronounced High Road) is probably the most powerful cable actuated disc brake on the market. Being compatible with all standard drop bar levers, this brake provides the option to switch to hydraulic discs without having to shell out for a top flight hydraulic disc compatible groupset. Felt/ Prologo Finishing Kit Finishing kit is Felts own brand with 6061 aluminum handlebars & micro adjust seat post. A Prologo Kappa saddle is a quality finishing touch. Built, Tuned & Tested Rest assured that each Felt bike is fully built, tested & tuned by Wiggles team of qualified bike mechanics to ensure your bike arrives in perfect condition. Find out which size fits you by clicking the size chart tab.