? Keirin Pro Track Bike - $449

Our best deal. Ever. You pick the size, we pick the color.

  • Your bike, delivered fully bylt
  • 30 Day Returns
  • Best Warranty in the Business

Size

Extra Large
6'2" - 6'4"

Fully Assembled - Right to your door. Learn about Bylt

Low Maintenance

One speed, no fuss. Spend your time riding, not wrenching.

Easy to Upgrade

You’re unique, your bike should match. Upgrades make that easy.

Ride Your Way

Fixed gear for fun and fitness, or freewheel to cruise and coast.

Mystery Bike?

Can’t make up your mind? No problem! Let us make the tough choice. All you need to do is select your size and we’ll send a brand new Keirin Pro your way! Our sentient warehouse bot will pick the best bike for you using its proprietary bike-match algorithm. It’s science! Save yourself the stress and get a brand new bike to love, win-win.

*This item is Final Sale

Bike buying has never been easier

Choose from 3 Simple Delivery Options at Checkout

Bike Shop Pickup
$75
  • Meet your local Bike Shop!
  • Includes the same service plan as buying your bike directly from the shop
  • Pick up the bike, ready to ride, right from your local bike shop.
  • We'll pick a trustworthy shop so you don't have to worry.
  • Automatically Activates Warranty
Learn More
Fully Built Delivery
$99
  • Easiest Option!
  • Your bike, ready to ride, delivered right to your door
  • Orders are shipped to the closest mechanic to you, built up and delivered to your door!
  • Our trusted mechanic will contact you for the perfect delivery time.
  • Keep your hands clean
  • No tools, no problem
  • Automatically Activates Warranty
  • Pronounced like built :)
  • *Only available in major metropolitan areas
Learn More
DIY
FREE
  • Cheapest Option
  • Most Hands-On
  • Perfect for DIY-ers
  • Tools Needed.
Learn More

Pure Fix Original Series

These are the bikes that started it all and kicked off our mission to get more people on two wheels. Now, it’s our best-selling line! Speed, style, and affordability 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!

Full Original Fixed Gear Bike Specifications

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.

Introducing the Keirin Series

This is the next step in our evolution. A ride for the riders who got hooked on fixed with their first Pure and are ready to take it up to the next level, the Keirin series was created to offer quality, affordable aluminum frames specifically designed to perform on the streets, the velodrome, and everywhere in between.

With two options, the Keirin and Keirin Pro, there’s sure to be a frame to fit your riding style and your budget. Whether you’re looking for a quick commuter or a pure-bred racer, the Keirin series is ready to race, ready to ride, and ready to go.

Keirin

We love happy customers!

If you’re not happy, we’re not happy, and if we’re not happy, why are we doing this? We want you to love your bike and your Pure Cycles experience as much as we love you!

Sizing Chart

Read about Bike Fitting and Sizing on our blog!

This is a rough guideline and we recommend everyone get fitted at their local bike shop. For a quick guesstimate measure your inseam to the floor and select the size with a standover height about 1"-2" shorter than your inseam. Or, you know, go visit your local bike shop! You can also shop by size.

  4’ 4’2 4’4 4’6 4’8 4’10 5’ 5’2 5’4 5’6 5’8 5’10 6’ 6’2 6’3 6’4+
43 CM
47 CM
50 CM
54 CM
58 CM
61 CM
64 CM
  Seat Tube Top Tube Head Angle Seat Angle Chainstay BB Drop Fork Offset Wheel Base Head Tube Length Standover Height
43 CM 430 488 72.3° 74.1° 371 30 46 934 90 686
47 CM 470 562 73° 74.5° 405 65 35 1007 90 711
50 CM 500 567 73° 74.5° 405 65 35 1007 90 736
54 CM 540 577 73° 74.5° 405 65 35 1007 90 762
58 CM 580 577 73° 74.5° 405 65 35 1007 125 812
61 CM 610 579 73° 74.5° 405 65 35 1007 145 838
64 CM 640 575 73° 74.5° 405 65 35 1007 185 863
Pure Fix Cycles Frame Click to download a sizing chart PDF.