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Retrospec Harper Fixed-Gear/Single-Speed

Retrospec Harper Fixed-Gear/Single-Speed
  • Color: Sage Green
  • Color: Slate
  • Color: Atlantic Blue
  • Color: Matte Black
  • Color: Matte Graphite/Orange
  • Color: White/Black
$150.00 - $299.99
Please select options


Our take on single-speed/fixed riding is your new go-to for commuting, coasting, and cruising far beyond point A to point B. With a quick flip of the back wheel, Harper turns from a single-speed cruise to a fixed-gear ride. Harper’s hand-built high-tensile strength steel diamond frame is designed for longevity. Ride comfortably with riser handlebars for improved posture. Powerful front and rear hand brakes come standard on our Harper and provide exceptionally controlled stops. Machined braking surfaces engineered onto the rims make for safer, faster, and more efficient stopping.

Flip-Flop Hub
- Harper is your two-for-one sidekick. With a quick flip of the back wheel, Harper turns from a single-speed cruise to a fixed-gear ride. Riding fixed has its advantages (including a guaranteed workout) but it’s not necessary to ride that way if you don’t enjoy it. Switch it up again with a quick flip of the rear wheel. Fixed-gear bikes famously have fewer moving parts so you can keep moving.

- We're not interested in anything but the best. Harper sports top-of-the-line components for smooth sailing and effortless riding. VP freestyle pedals, KMC chain, 25.4mm riser handlebars, and front and rear Promax brakes help you maintain total control of your ride. 30mm Deep V rims and thick, stable tires ensure a smooth ride, gripping to city streets regardless of conditions.


Frame Hand-built steel track frame
Headset 1 1/8” Threadless
Rims/Wheels 30mm Super Deep-V Double Wall w/ Braking Surface
Hubs Flip Flop
Tires Kenda City Tires 700 x 28c
Bottom Bracket NECO 68x110 Catridge Sealed
Chain KMC 1/8”
Cassette/Rear Cogs 16T Freewheel / 16T Fixed Cog
Handlebars 25.4mm Riser Handlebars
Tape/Grips Kraton Rubber Track Grips
Stem Alloy 25.4mm clamp size diameter
Brakes Promax
Pedals 9/16” Plastic Pedals
Saddle Critical Cycles Pista Saddle
Accessories & Extras All the tools you need to build and maintain your own bicycle including three metric Allen wrenches and a flat wrench

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Sage Green / X-Small 815725029218 3263 HAR25724197S
Sage Green / Small 815725029225 3264 HAR24597507S
Sage Green / Medium 815725029232 3265 HAR24791357M
Sage Green / Large 815725029249 3266 HAR24325942L
Sage Green / X-Large 815725029256 3267 HAR25872240L
Slate / X-Small 815725029263 3268 HAR21519747S
Slate / Small 815725029270 3269 HAR20737216S
Slate / Medium 815725029287 3270 HAR20924293M
Slate / Large 815725029294 3271 HAR20644296L
Slate / X-Large 815725029300 3272 HAR21774557L
Atlantic Blue / X-Small 815725029065 3248 HAR28769312S
Atlantic Blue / Small 815725029072 3249 HAR27811072S
Atlantic Blue / Medium 815725029089 3250 HAR27493483M
Atlantic Blue / Large 815725029096 3251 HAR27912042L
Atlantic Blue / X-Large 815725029102 3252 HAR28242514L
Matte Black / X-Small 815725029164 3258 HAR26937708S
Matte Black / Small 815725029171 3259 HAR25294821S
Matte Black / Medium 815725029188 3260 HAR25221058M
Matte Black / Large 815725029195 3261 HAR25186410L
Matte Black / X-Large 815725029201 3262 HAR26494097L
Matte Graphite/Orange / X-Small 815725029119 3253 HAR35569494S
Matte Graphite/Orange / Small 815725029126 3254 HAR3489525S
Matte Graphite/Orange / Medium 815725029133 3255 HAR34652767M
Matte Graphite/Orange / Large 815725029140 3256 HAR34105750L
Matte Graphite/Orange / X-Large 815725029157 3257 HAR35472873L
White/Black / X-Small 815725029317 3273 HAR26914211S
White/Black / Small 815725029324 3274 HAR25134948S
White/Black / Medium 815725029331 3275 HAR25734269M
White/Black / Large 815725029348 3276 HAR25569714L
White/Black / X-Large 815725029355 3277 HAR26849864L