Easy to maintain, easy to ride, and easy-going.
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Flip-flop hub, to ride fixed or single-speed
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Easy to maintain
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Comfortable ride
Ride fixed or single-speed
Harper is our 2-in-1 dream ride. With a flip of the back wheel, Harper turns from single-speed to a fixed-gear bike. Riding fixed has its advantages (including a guaranteed workout - you don’t stop pedaling!) but it’s not necessary to ride that way if you don’t enjoy it. Switch it up again with a flip of the rear wheel to get back to single-speed.
Simple riding and easy maintenance
Harper is as simple as it gets. Single-speed bikes boast fewer components than multi-gear bikes which keeps them lighter, simpler, and easier to maintain. Harper’s top-of-the-line components still set you up for smooth sailing and effortless riding, without all the bells and whistles.
- Frame Hand-built steel track frame
- Drop-Out Horizontal drop-outs
- Rims 30mm Super Deep-V Double Wall Rims with Braking Surface
- Hubs Flip Flop Hub with Single-Speed 16T Freewheel & Fixed-Gear 16T Cog
- Tires Kenda City Tires 700x28C
- Chain KMC 1/8”
- Headset 1 1/8” Threaded
- Stem Promax Alloy 25.4mm clamp size diameter
- Handlebars 25.4mm Riser Handlebars
- Grips Kraton Rubber Track Grips
- Brake Front & Rear Promax Brakes with 22.2mm brake lever clamp diameter
- Bottom Bracket NECO 68x110 Catridge Sealed
- Pedals 9/16” Plastic Pedals
- Saddle Retrospec Pista Saddle
- Recommended Weight Limit: 250 LBS
| Size | Height Range | Standover Height |
| XS - 43CM | 4'9"-5'1" | 30.5" |
| S - 49CM | 5'2"-5'5" | 31" |
| M - 53CM | 5'6"-5'8" | 32.5" |
| L - 57CM | 5'9"-5'11" | 34" |
| XL - 60CM | 6'+ | 35" |
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:
- 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.
Looking to level up? Check out this upgrade.
Get an even better ride with
- Sealed cartridge bearing hubs
- Forged rear dropouts
- Internal cable housing
- Machined brake tracks
Get everything you need to start moving
Customer Reviews
4.7
Based on 424 Reviews
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KM
11/25/2020
KEVIN M.
United StatesAmazing
I love this bike! Nothing more to say..it’s amazing. My first single speed, i was nervous initially about riding single/ fixed gear but this bike has made me fall in love. I don’t even ride my electric bike anymore. I would order this bike again, i only wish the company had express shipping because the excitement of waiting for the bike to arrive was too much for me.
DN
11/24/2020
Dinh N.
United Statesgood bike, good service
first order: - 57cm was too tall for me to clear top tube by at least 1 inch, even though 57cm is recommended for height 5'9" - 5'11" and mine is 5'10" - tracking number was incorrect - return was easy and promptly processed second order - 53cm fits better - tracking number showed shipment that was stationary at "label created" for days Overall good bike, good service. Retrospec can look into shipping logistics to find causes for above problems and fix.
TD
11/23/2020
Tamila D.
United StatesGreat bike!
The bike is very comfortable and pretty light. Very easy to carry. I totally recommend getting it!
AI
11/23/2020
Antonio I.
United StatesWONDERFUL BIKE
love it. light and really pratical.
JT
11/20/2020
Julius T.
United StatesCool Bike
I enjoyed the bike so far and the set up is pretty easy!