Pure Fix Original Series

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Details Specs Sizing Warranty Reviews // Q & A


Original Series

These are the bikes that started it all - now, they're our best-sellers! Speed, style, and simplicity make these bikes the perfect storm of awesome whether you’re starting out, getting back into biking after a few years away, or just want to get a feel for riding fixed!

*43cm will come with a rear brake, 650c wheels, and 650x23C tires.

Our Original series bikes now come with an included rear brake! Check out the installation guide here.


Pure Fix Original Series Specs


High-Tensile Steel, TIG-Welded
1-1/8" High-Tensile Steel, Threadless, Straight Tapered Legs


Crank Set:
3-Piece Alloy, 170mm
Alloy, 44T x 1/2" x 1/8"
Bottom Bracket:
Sealed Cartridge, 68 x 110.5mm
15T x 1/2'' x 1/8''
16T x 1/2" x 1/8" Freewheel
K.M.C. S1, 1/2" x 1/8" 96 Links
Slip Resistant Top, 9/16"


Front Brake:
Alloy, 47-57mm Reach, Dual Pivot
Rear Brake:
Alloy, 47-57mm Reach, Dual Pivot
Brake Lever:
Alloy, 3-Finger Lever


Alloy, Threadless, 28.6 x 60mm x 7deg x 25.4mm Clamp
Steel, Threadless, 28.6 x 34 x 30mm, Caged Bearings
Steel, Threadless, 28.6 x 34 x 30mm, Caged Bearings
Kraton Rubber, 120mm
Pure Cycles Urban, Steel Rails
Seat Post:
Alloy W/Integrated Clamp, 25.4 x 300mm
Seat Clamp:
Alloy, 28.6mm I.D., with Bolt


Front Wheel:
700C x 32H x 14G Alloy-Urban, Bolt-On
Rear Wheel:
700C x 32H x 14G, Alloy-Urban, Bolt-On (For Fixed and FW)
Front Hub:
Alloy, 32H x 14G x 3/8" Bolt-On Axle
Rear Hub:
Alloy, 32H x 14G x 3/8" Bolt-On Axle (For Fixed and FW)
14G Stainless Steel
40mm Alloy Rim, Double Wall
WTB Thick Slick 700c x 28mm, Black Wall
700c x 28mm, Presta Valve (60mm)

Parts and Specs subject to change without notice.


Everybody's size is different - it's always best to measure your inseam before deciding what size is best.

Choose this size


47 cm

For riders 5'2" to 5'5" with an inseam of at least 28"

Choose this size


50 cm

For riders 5'4" to 5'8" with an inseam of at least 29"

Choose this size


54 cm

For riders 5'7" to 5'11" with an inseam of at least 30"

Choose this size


58 cm

For riders 5'10" to 6'0" with an inseam of at least 32"

Choose this size


61 cm

For riders 6' to 6'2" with an inseam of at least 33"

Choose this size


64 cm

For riders 6'2" and up with an inseam of at least 34"

Fixed Gear Bicycle Geometry Image
43 47 50 54 58 61 64
Seat Tube (C-T) A 430 470 500 540 580 610 640
Top Tube (Effective) B 488 525 530 550 580 600 620
Head Angle C 72.3 72 72.5 73 73.5 74 74
Seat Angle D 74.1 74.5 74 73.5 73 72.5 72.5
Chainstay E 371 417 417 417 417 417 417
BB Drop F 30 70 70 70 68 68 68
Fork Offset G 46 45 45 45 45 45 45
Wheel Base H 934 981 985 992 1013 1022 1041
Head Tube Length I 98 90 90 90 125 145 185
Standover 690 (27") 711 (28") 737 (29") 770 (30") 813 (32") 838 (33") 864 (34")


The best warranty in the business

We believe in our bikes and we believe you should be able to enjoy riding without sweating the small stuff - that’s why we’ve got your back! With a lifetime warranty on frames and a 1-year warranty on components, you can ride confidently with the knowledge that we’ve got you covered.

To activate your warranty, professional assembly is required.


Fixed Gear or Freewheel?

We chose a flip-flop rear hub to give you the flexibility to ride fixed or freewheel. Riding fixed gives you an unmatched feeling of connectedness to the bike, the road, and helps you perfect your pedal-stroke. Riding freewheel gives you the ability to coast and cruise, just like the single-speed you grew up on! No matter which you choose to ride, the standard front brake guarantees you can stop either way.