Atlas Step-Thru 21s | Matte Olympic Blue
Atlas Step-Thru 21s | Matte Flamingo
Atlas Step-Thru 21s | Satin White
Atlas Step-Thru 21s | Matte Olympic Blue
Atlas Step-Thru 21s | Matte Flamingo
Atlas Step-Thru 21s | Satin White
1 review

Atlas Step-Thru 21s

Regular price $299.99 Learn more
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$299.99
Retrospec
$549.99
Traditional Retail
Easy to handle, easy on the eyes, and easy goin’
  • A lightweight, hand-built 6061 aluminum frame
  • Designed for long rides and breaking a sweat
  • 21 speeds to support your most intense rides
Specs

Take a load off

Quick and easy gear changes

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.
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.
Frameset
  • 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
Wheelset
  • Rims Retrospec aluminum double-wall 32H, 20mm apex section, precision machined brake tracks with wear indicator
  • Hubs Aluminum alloy, ball-bearing, 32H, QR
  • Spokes 14G UCP
  • Tires Retrospec 700 x 35C all-season, S/V valves
Extras
  • Kickstand Center-mount, steel
Drivetrain
  • Rear Derailleur Shimano Tourney 7S
  • Front Derailleur Shimano Tourney
  • Shifters Shimano Revoshift (twist) 21S, RS35
  • Crank Aluminum alloy 170mm x 28/38/48T
  • Chain KMC Z-series 1/2 x 3/32"
  • BB Sealed Cartridge 68 x 122.5mm
  • Freewheel/Cog Shimano Tourney 500, 7S MegaRange 14-34T
Components
  • Headset 1 1/8" (28.6mm) steel, Threadless
  • 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)
  • Grips Retrospec Comfort
  • Stem Aluminum alloy Threadless, 80mm (16-18"), extension/7⁰ degree rise, 40mm rise
  • Saddle Retrospec Sport Comfort
  • Seatpost Aluminum 27.2 x 300mm/Diamond, 400mm/StepThru
  • Seatpost Clamp Aluminum alloy QR
  • Pedals High Impact, Reinforced Nylon Resin Platform, 9/16"
  • Recommended Weight Limit 250 LBS
Size Height Range Standover Height
What's My Size?

Your inseam can help you find the perfect sized bike (measuring it properly is similar to pant inseams but measured a little differently). Here's how they work:

  1. Stand upright with your feet 6-8" apart.
  2. Using a tape measure or tailor tape, measure from the bottom of your foot to the top of the inside of your leg.
  3. Compare your inseam measurement to the standover height of the bike. You should have about an inch of space between your body and the top tube.

Get everything you need to start moving

Customer Reviews
5.0 Based on 1 Reviews
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JP
08/15/2020
Julissa P.
United States United States
Amazing purchase

I love this bike. Everything from the color, the comfort and the overall bike itself was amazing. Retrospec customer service was also great.