Harper Coaster Bike - Single Speed

$219.99 Regular price

Starting at $20/mo with . See if you qualify

Pay 4 interest-free payments of $55 with

Meet your lightweight, low-maintenance throwback bike, reminiscent of days spent cruising the cul-de-sac. Harper Coaster kicks it old-school with a built-in coaster brake and a simple single speed drivetrain.

Starting at $20/mo with . See if you qualify

Pay 4 interest-free payments of $55 with

57CM - L
The delivery date is estimated based on carrier guidance. Actual delivery time may vary and is not guaranteed by Retrospec or the carrier.
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50 Day Returns

A simple bike from simpler times

Get to know your ride
Harper Coaster Bike - Single Speed | Olive Drab

High-Tensile Steel Frame

Durable build

Single Speed

Lighter and less complicated

700x28C Commuter Tires

Solid traction, smooth rolling

Coaster Brake

To stop, simply pedal backwards
Durable Steel Frame
High-tensile strength steel is tough, resistant to fatigue, and shock-absorbing-a must for city riding.
Single Speed
Single speed bikes boast fewer components than multi-gear bikes, which keeps them lighter, less complicated, and easier to maintain.
Commuter Tires
Grooved tires grip the pavement and dispel water for solid traction, rain or shine.
Coaster Brake
To stop and take in the views, simply pedal backwards.
Best for pavement
All terrain

Best for flat
Some hills
  • Specifications
  • Sizing
  • Financing
  • Assembly & Owner's Manual
  • Frame Hand Built tig-welded high-tensile steel, "UrbanComfort" design
  • Fork Unicrown, Threaded, 28.6mm, 1x fender-eyelet
  • Rims Retrospec aluminum double-wall 32H, 30mm V-section, precision machined brake tracks
  • Spokes 14G UCP
  • Tires Retrospec 700 x 28C all-season, P/V valves
  • Recommended Weight Limit 250 LBS
  • Chain KMC 1/8”
  • Bottom Bracket 68x110 Cartridge Sealed
  • Headset 1 1/8" (28.6mm) steel, Threaded
  • Brakes Rear Coaster Brake
  • Handlebars Aluminum Alloy 520mm Wide x 30mm Rise, 25.4
  • Grips Retrospec Triangle Kraton 125mm length
  • Stem Quill-type aluminum 80mm extension, -17⁰ rise, 25.4 handlebar clamp, 22.2 quill
  • Saddle Retrospec Pista
  • Seatpost Aluminum Alloy Seat Post 25.4 x 300mm with Micro Adjust head
  • Seatpost Clamp Aluminum alloy CNC precision 28.6mm
  • Pedals Low-Profile Platform, Reinforced Nylon resin, 9/16"
How to measure my inseam for a bike

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.
SizeHeight RangeStandover Height
43CM - XS 5’5” - 5’7” 29.5"
49CM - S 5’8” - 5’10” 31"
53CM - M 5’11” - 6’0" 32.25"
57CM - L 6’1” - 6’2” 33.375"
60CM - XL 6’3” - 6’5" 35"
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Assembly & Owner's Manual
Rated 4.7 out of 5 stars
Based on 299 reviews
Total 5 star reviews: 228 Total 4 star reviews: 57 Total 3 star reviews: 14 Total 2 star reviews: 0 Total 1 star reviews: 0
299 reviews
  • Eli
    Flag of United States
    Verified Buyer
    Rated 5 out of 5 stars
    5 Stars

    Good quality, great value

  • Everett M.
    Flag of United States
    Verified Buyer
    Rated 5 out of 5 stars
    Best, lightest single speed bike ever.

    I have never been happier with any other bike upon initial impression. The color is phenomenal, the fit is perfect, the wheels are light, the tires and great quality. Due to my physical limitations (spine and arthritis in knee), I have swtiched the cog to a 18t and changed to a taller stem. This is by no means the fault of Retrospec. I had to make things easier on my spine. It takes the hills easier, at a relatively simple cadence, I can maintain 12-14 mph. Of all the bikes I own, this one replaces them all. Seriously, I will be getting rid of all my other bikes. The simplicity of the single speed is perfect for my commute and lifestyle. If you want a truly affordable single speed and make your life easier, this is the bike for you.

  • Murat
    Verified Buyer
    Rated 5 out of 5 stars
    5 Stars

    Love the bike

  • Oscar S.
    Flag of United States
    Verified Buyer
    Rated 5 out of 5 stars
    My first ever bicycle, hey I am in the 40.

    This is an excellent, non-expensive, good quality, easy to install bicycle. I am 6’4” tall, 200 lbs and I got the largest one, fit perfect. I am going to change the chair to a more comfortable one. Ahhh, and the breaks…I am getting use to the back paddle feature, it’s cool.

  • Chris D.
    Flag of United States
    Verified Buyer
    Rated 5 out of 5 stars
    We bought 6 to donate

    We bought 6 to donate to Ky refugee ministries. Great, solid, high quality, easy to assemble.

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