Harper Fixie Bike - Single Speed

$249.99 Regular price

Starting at $23/mo with . See if you qualify

Pay 4 interest-free payments of $63 with

Harper is a sleek and simple urban bike built for the bustling city, sporting a single speed drivetrain and tough steel frame. Harper is uncomplicated and low maintenance for the minimalistic rider.

Starting at $23/mo with . See if you qualify

Pay 4 interest-free payments of $63 with

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Harper Plus Fixie Bike - Single Speed | Coastal Blue
Harper Plus Fixie Bike - Single Speed
  • Aero-style downtube frame
  • Sealed cartridge bearing hubs
  • Deep-V aero rims with stainless steel spokes
  • Threadless steering system
  • Internal cable routing
  • Rear dropout with integrated chain tensioners
53CM - M
Add a bike lock
Lookout U-Lock Bike Lock With Cable - 14mm
Color —
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

Conquer city streets on our fan-favorite fixie

Get to know your ride
Harper Fixie Bike - Single Speed | Matte Black

High-Tensile Steel Frame

Durable build

Single Speed

Lighter and less complicated

700x28C Commuter Tires

Solid traction, smooth rolling

Flip Flop Hub

Ride fixed gear or freewheel
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 low maintenance.
Commuter Tires
Grooved tires grip the pavement and dispel water for solid traction, rain or shine.
Flip Flop Hub
Ride freewheel or switch to fixed gear by flipping the rear wheel.
Waffle Grips
Waffle-textured grips provide a secure, shock-absorbing grip for better control.
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
  • Hubs Retrospec low-flange aluminum alloy, loose-ball bearings, 32H, rear flip-flop, bolt-on
  • Spokes 14G UCP
  • Tires Retrospec 700 x 28C all-season, P/V valves
  • Recommended Weight Limit 250 LBS
  • Crank Harper Forged Aluminum Alloy 165mm x 46T x1/8"
  • Chain KMC C1 1/2 x 1/8"
  • BB Sealed Cartridge, 68 x 103mm
  • Freewheel/Cog 16T x 1/8"
  • Headset 1 1/8" (28.6mm) steel, Threaded
  • Brakes Aluminum alloy dual-pivot side-pull calipers & aluminum brake levers. 47-57mm reach.
  • 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 667 reviews
Total 5 star reviews: 527 Total 4 star reviews: 107 Total 3 star reviews: 28 Total 2 star reviews: 2 Total 1 star reviews: 3
667 reviews
    Verified Buyer
    Rated 5 out of 5 stars
    Love My bike!

    What a fun and perfect ride. Went 10 miles yesterday with friends. She's fabulous!

  • Georgi
    Verified Reviewer
    Rated 5 out of 5 stars
    Great Bike

    I have been enjoying my Retrospec Harper already for a couple of years. I never had any problems.I love the reliability and design of my bike .It is a perfect fit to my needs.

  • Gabriel C.
    Verified Buyer
    Rated 1 out of 5 stars
    Broken tire

    I tried putting air in back tire and as soon as i put air in it just comes right out l, Took it to get checked out and they told me the tire did not work.

  • Amarissa
    Flag of United States
    Verified Buyer
    Rated 5 out of 5 stars

    I had this bike for 2 years now and I absolutely love it!!! Only downfall is that has no shock absorption so if your streets are rocky you’ll definitly feel it but other than that it’s great!!! I even got hit by a car and the only damage is a lost handle bar grip and a cracked pedal. THIS BIKE IS BUILT TO LAST!!!

  • Michael L.
    Flag of United States
    Verified Buyer
    Rated 5 out of 5 stars


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