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Harper Fixie Bike - Single Speed

$249.99 $329.99

Pay 4 interest-free payments of $63 with

The modern fixie bike for the minimalistic rider

Less is more with Harper, the ultimate city companion that takes timeless style and effortless simplicity to the next level. This single speed bike celebrates its fixie roots with a classic, no-fuss frame design and a flip flop hub for fixed gear riding, while its ergonomic geometry brings it into the modern era and makes your ride more comfortable. Able to withstand the rough-and-tumble of urban commuting, the fixie’s high-tensile steel build and single speed drivetrain make it durable, uncomplicated, and low maintenance – perfect for everyday use.

Pay 4 interest-free payments of $63 with

Black single-speed fixie bicycle with a straight top tube with retrospec branding.

Black single-speed fixie bicycle with straight handlebars on a white background.

Front view of a black single speed fixie bicycle against a white background.

A side view of the blue Harper Fixie Single Speed bicycle with brown saddle and grips on a white background.

Blue Harper Fixie Single Speed bicycle with brown saddle and grips on a white background.

Front view of a blue Harper Fixie Single Speed bicycle with brown grips and saddle, set against a white background.

A green Grateful Dead Harper Fixie Single Speed Step Over Bicycle with a minimalist design, featuring a black seat, black handlebars, and iconic Grateful Dead artwork such as "Steal Your Face", a red lightening bolt, and red roses, on the sleek frame.

A front view of the green Grateful Dead Harper Fixie Single Speed Step Over Bicycle with a minimalist design, featuring a black seat, black handlebars, and iconic Grateful Dead artwork such as "Steal Your Face" on the stem.

Colorful Grateful Dead-themed stickers featuring bears, skulls, roses, and slogans on a black patterned background.

An olive green retrospec Harper Plus 7-Speed bicycle with black saddle and handlebars, and tan-wall tires.

Harper Plus City Bike - 7 Speed

Lightweight aluminum frame
Shimano 7-speed drivetrain
Stainless steel spokes
Threadless steering system

Go for $70

$249.99 $329.99

Pay 4 interest-free payments of $63 with

The modern fixie bike for the minimalistic rider

Less is more with Harper, the ultimate city companion that takes timeless style and effortless simplicity to the next level. This single speed bike celebrates its fixie roots with a classic, no-fuss frame design and a flip flop hub for fixed gear riding, while its ergonomic geometry brings it into the modern era and makes your ride more comfortable. Able to withstand the rough-and-tumble of urban commuting, the fixie’s high-tensile steel build and single speed drivetrain make it durable, uncomplicated, and low maintenance – perfect for everyday use.

Colors — Select a Color

Matte Black

Navy Zion

Olive Drab

Grateful Dead

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50-Day Returns

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{"id":44003918971052,"title":"Matte Black \/ S: 48cm","option1":"Matte Black","option2":"S: 48cm","option3":null,"sku":"6349","requires_shipping":true,"taxable":true,"featured_image":{"id":38083158737068,"product_id":8116416086188,"position":1,"created_at":"2024-12-13T10:23:52-08:00","updated_at":"2025-10-28T05:30:57-07:00","alt":"Black single-speed fixie bicycle with a straight top tube with retrospec branding.","width":3000,"height":3000,"src":"\/\/retrospec.com\/cdn\/shop\/files\/HarperSSFixie_MatteBlack_6349_6350_6351_6352_1_1.jpg?v=1761654657","variant_ids":[44003918971052,44003919003820,44003921297580,44003921330348]},"available":true,"name":"Harper Fixie Bike - Single Speed - Matte Black \/ S: 48cm","public_title":"Matte Black \/ S: 48cm","options":["Matte Black","S: 48cm"],"price":24999,"weight":14969,"compare_at_price":32999,"inventory_quantity":62,"inventory_management":"shopify","inventory_policy":"deny","barcode":"840216320543","featured_media":{"alt":"Black single-speed fixie bicycle with a straight top tube with retrospec branding.","id":30414750908588,"position":1,"preview_image":{"aspect_ratio":1.0,"height":3000,"width":3000,"src":"\/\/retrospec.com\/cdn\/shop\/files\/HarperSSFixie_MatteBlack_6349_6350_6351_6352_1_1.jpg?v=1761654657"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}

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The modern fixie bike for the minimalistic rider

Less is more with Harper, the ultimate city companion that takes timeless style and effortless simplicity to the next level. This single speed bike celebrates its fixie roots with a classic, no-fuss frame design and a flip flop hub for fixed gear riding, while its ergonomic geometry brings it into the modern era and makes your ride more comfortable. Able to withstand the rough-and-tumble of urban commuting, the fixie’s high-tensile steel build and single speed drivetrain make it durable, uncomplicated, and low maintenance – perfect for everyday use.

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{"id":44003918971052,"title":"Matte Black \/ S: 48cm","option1":"Matte Black","option2":"S: 48cm","option3":null,"sku":"6349","requires_shipping":true,"taxable":true,"featured_image":{"id":38083158737068,"product_id":8116416086188,"position":1,"created_at":"2024-12-13T10:23:52-08:00","updated_at":"2025-10-28T05:30:57-07:00","alt":"Black single-speed fixie bicycle with a straight top tube with retrospec branding.","width":3000,"height":3000,"src":"\/\/retrospec.com\/cdn\/shop\/files\/HarperSSFixie_MatteBlack_6349_6350_6351_6352_1_1.jpg?v=1761654657","variant_ids":[44003918971052,44003919003820,44003921297580,44003921330348]},"available":true,"name":"Harper Fixie Bike - Single Speed - Matte Black \/ S: 48cm","public_title":"Matte Black \/ S: 48cm","options":["Matte Black","S: 48cm"],"price":24999,"weight":14969,"compare_at_price":32999,"inventory_quantity":62,"inventory_management":"shopify","inventory_policy":"deny","barcode":"840216320543","featured_media":{"alt":"Black single-speed fixie bicycle with a straight top tube with retrospec branding.","id":30414750908588,"position":1,"preview_image":{"aspect_ratio":1.0,"height":3000,"width":3000,"src":"\/\/retrospec.com\/cdn\/shop\/files\/HarperSSFixie_MatteBlack_6349_6350_6351_6352_1_1.jpg?v=1761654657"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}

Get to know your ride

Black and white line drawing of a bicycle frame.

High-Tensile Steel Frame

Black and white illustration of bicycle drivetrain.

Single Speed

Black and white illustration of a bicycle wheel with spokes.

700x32C Commuter Tires

Black and white line drawing of a bicycle hand grips.

UrbanComfort Grips

Black and white outline of a bicycle saddle.

Sport Comfort Saddle

Line drawing of a tube with cable running through it.

Internal Cable Routing

Black and white line drawing of flip-flop hub.

Fixed Gear/Freewheel Flip Flop Hub

Features

Black bicycle with a focus on the saddle and handlebars against a white background.

Durable, Comfortable Frame

Harper’s fixie frame design promotes a more upright, comfortable riding position. Its sturdy steel build makes it tough, resistant to fatigue, and shock-absorbent – a must for city riding.

Close-up of a bicycle's rear wheel, chain, and pedal with "Harper" on the frame.

Lightweight & Low Maintenance

A single speed drivetrain helps keep this bike lighter, less complicated, and simpler to maintain.

Protection From the Elements

Internal cable routing offers a sleek look and helps protect your cables from weather and debris.

Close-up of a bicycle wheel with spokes against a white background.

Solid Traction, Rain or Shine

Grooved commuter tires grip the pavement and dispel water.

A close-up of a black fixed-gear bike's rear wheel, chain, and pedal against a white background.

Fixed Gear or Freewheel

A rear flip flop hub allows you to ride freewheel or switch to fixed gear by flipping the rear wheel.

Close-up of a black bicycle handlebar, brake lever, and part of the rear wheel.

Secure, Comfortable Grip

Textured grips provide a secure, shock-absorbing grip for better control.

Best for bike riding on pavement and flat

Weekday city commutes on flat streets
Campus rides between classes
Quick errands to shops and cafes
Last mile rides from transit to home
Weekend spins on paved bike paths

Pavement

Gravel

All terrain

Flat

Some hills

Hilly

Mountain

⚠️ WARNING! This product can expose you to chemicals including Carbon-Black Extracts, which is known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.p65warnings.ca.gov/

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, materials, and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. Bike and frame weights are based off pre-production painted frames at time of publication. Weights may vary in final production.

FAQs
Specifications
Sizing
Financing
Assembly & Owner's Manual

FAQs

Frequently Asked Questions

Yes. The rear flip flop hub lets you choose fixed gear or freewheel. Move the rear wheel to the other side to change the setup.

The frame is high tensile steel. It is built for city durability and low maintenance daily use.

Harper runs 700c wheels. This fits common city and road tires for everyday pavement riding.

Specifications

Specification

Frameset

Frame Hand Built high-tensille Steel, top tube internal cable routing, "UrbanComfort" design, forged horizontal rear dropouts with integrated chain tensioners. Bar-spin clearance with no toe overlap. TT: 28mmOD, DT:46mmODprofile (ovalized). Internal cable routing, 2 sets bottle braze-ons, rear rack braze-ons.
Fork Unicrown, Threaded, 28.6mm, 2x fender-eyelet, rack braze-ons

Wheelset

Rims retrospec aluminum double-wall 32H, precision machined brake tracks
Hubs retrospec low-flange aluminum alloy, loose-ball bearings, 32H, rear flip-flop, bolt-on: 16T FW/16T Fixed cog.
Spokes 14G UCP
Tires retrospec 700 x 32C all-season, S/V valves

Recommended Weight Limit 250 LBS

Drivetrain

Crank Harper Forged Aluminum Alloy 170mm x 46T x1/8"
Chain KMC Z-series 1/8
Chain Ring(s) 44T steel
BB Sealed Cartridge
Freewheel/Cog 16T x 1/8" FW + 16T Fixed Cog

Components

Headset 1 1/8" (28.6mm) steel, Threaded, Semi-Integrated
Brakes Aluminum alloy dual-pivot side-pull calipers & aluminum brake levers. 47-57mm reach.
Handlebars Aluminum Alloy 620mm Wide x 35mm Rise, 25.4
Grips retrospec UrbanComfort Kraton 125mm length
Stem Quill-type aluminum 80mm extension, -17⁰ rise, 25.4 handlebar clamp, 22.2 quill
Saddle retrospec Sport Comfort (SO/ST anatomically specific)
Seatpost Aluminum Alloy 25.4 x 300mm with Micro Adjust head
Seatpost Clamp Aluminum alloy 28.6mm
Pedals Low-Profile Platform, Reinforced Nylon resin, 9/16"

Sizing

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:

Stand upright with your feet 6-8" apart.
Using a tape measure or tailor tape, measure from the bottom of your foot to the top of the inside of your leg.
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.

ARider Height

BInseam

CTop Tube

Size	Height Range	Standover Height
48CM - S	5'3" - 5'6"	29.7"
52CM - M	5'5" - 5'8"	30.8"
56CM - L	5'7" - 6'0"	32.1"
60CM - XL	5'9" - 6'2"	33.2"

Financing

Buy Now, Pay Later

Make easy monthly payments over 3,6 or 12 months

$89.60

PER MONTH

3 months

APR 20.22%

Interest $8.81

Total $268.80

$89.60

PER MONTH

3 months

APR 20.22%

Interest $8.81

Total $268.80

$89.60

PER MONTH

3 months

APR 20.22%

Interest $8.81

Total $268.80

Get a real-time decision with just 5 pieces of info.

Assembly & Owner's Manual

Assembly Instructions

Owner's Manual

All Natural Fun From the Field

4.7

Rated 4.7 out of 5 stars

Based on 1,004 reviews

Total 5 star reviews: 790 Total 4 star reviews: 172 Total 3 star reviews: 42 Total 2 star reviews: 0 Total 1 star reviews: 0

1,004 reviews

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Austin F.
Verified Buyer
9/18/25
Rated 5 out of 5 stars
Love the bike
Easy to put together and fun to ride as well as easy to get on and off of the bike
Was this helpful?
Tim H.
Verified Buyer
9/8/25
Rated 5 out of 5 stars
Great ride for the price
Can’t beat it for the price. My one top recommendation would be to buy some Schwalbe or Continental tires because the ones that it comes with arent very puncture resistant. That’s not a complaint, just a recommendation. This bike is easy to mod out too. I put cruiser bars on my last one and even installed a e-bike pedal- assist kit on it. I ended up selling it because I was moving cross country. Anyway I’m always pleased with these bikes
Was this helpful?
Malik O. U.
Verified Buyer
9/7/25
Rated 5 out of 5 stars
The Minimalist Tour Machine: 216 Miles on a Harper Fixie
This Harper Fixie performed well during my 216-mile tour. Its simplicity and lack of gears prevented mechanical problems and provided a direct road connection. The steel frame cushioned vibrations, enhancing comfort on the journey. This bike shows that reliability and ride feel matter more than having many features, making it a great choice for a minimalist tour.
Was this helpful?
Ariel T.
Verified Buyer
8/11/25
Rated 5 out of 5 stars
Great bike for a budget
I’ve been using it for about a week commuting about 10 miles daily and it is reliable a great bike for a budget and beginners.
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Rudolph G.
Verified Buyer
8/11/25
Rated 5 out of 5 stars
Love my new bike
I just bought my bike give it a few little upgrades and I'm very satisfied ride's really well .
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