Retrospec Atlas Step-Thru 21s
Take a load off
Atlas' sporty, aerodynamic frame design supports an upright riding position to reduce strain on your back. Constructed from 6061 aluminum, this lightweight bike is perfect for weekend treks across your city or squeezing in a quick workout before dinner plans.
Quick and easy gear changes
Atlas' Shimano Tourney 21-speed drivetrain is equipped to handle your hilliest rides. Easily switch gears and tackle steep inclines and flat sprints with a flick of your wrist.
Work it out
Atlas has your back at every sharp corner, quick stop, or steep hill that comes your way. We added Shimano Revo twist shifters for easy gear transitions, puncture-resistant tires to protect from debris, and linear-pull brakes on machined brake tracks for extra-responsive stopping.
|Frame||Hand-built 6061 aluminum alloy frame with two sets water bottle braze-ons, rear rack braze-ons, and replaceable rear derailleur hanger|
|Fork||Unicrown, Threadless, 2x eyelets|
|Rims||Retrospec aluminum double-wall 32H, 20mm apex section, precision machined brake tracks with wear indicator|
|Hubs||Aluminum alloy, ball-bearing, 32H, QR|
|Tires||Retrospec 700 x 35c all-season, S/V valves|
|Bottom Bracket||Sealed Cartridge 68 x 122.5mm|
|Crankset||Aluminum alloy 170mm x 28/38/48T|
|Shifters||Shimano Revoshift (twist) 21S, RS35|
|Front Derailleur||Shimano Tourney|
|Rear Derailleur||Shimano Tourney 7S|
|Cassette/Freewheel||Shimano Tourney 500, 7S MegaRange 14-34T|
|Chain||KMC Z-series 1/2 x 3/32"|
|Brakes||Aluminum alloy linear side-pull calipers & brake levers|
|Handlebars||Aluminum alloy Riser - 24 1/2" width x 1 3/8" rise (600-620width x 35rise mm)|
|Stem||Aluminum alloy Threadless, 80mm (16-18"), extension/7° degree rise, 40mm rise|
|Headset||1 1/8" (28.6mm) steel, Threadless|
|Seatpost||Aluminum 27.2 x 300mm/Diamond, 400mm/StepThru|
|Saddle||Retrospec Sport Comfort|
|Pedals||High Impact, Reinforced Nylon Resin Platform, 9/16"|
* Subject to change without notice.