Undefeated II - Black Prism Edition
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Undefeated II - Black Prism Edition
Race Ready - Out The Box w/ a head-turning Metallic Flake Paint-job

Straight out of the box - the Undefeated II is a race ready, beast of a machine. Building upon the original Undefeated's winning pedigree, The Undefeated II comes stock with the aerodynamic Essor Aerodash Track Crank, Deda Handlebars, and Michelin Tires stock while featuring new and lighter rounded 7005 Aluminum Double Butted Tubes. The stiffened front end features a newly oversized-tapered head tube and matching Essor USA full carbon fork for superior handling and responsiveness. These new features make The Undefeated II the perfect tool for mastering fixed-gear crits. The Essor USA Bolt wheelset is an added bonus - being both lightweight enough to race (2204 g) while still being durable to take a beating on the street.

See What the Experts Have to Say! (Read The Reviews):
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The favorite in track and fixed-gear racing. Our most responsive and powerful machine yet boasts nothing but premiere parts and components.


  • FRAME:  7005-Grade Double Butted Aluminum 
  • FORK: Full Carbon Fiber Fork & Steer Tube by Essor USA
  • WHEEL SET:  Essor USA Bolt Wheel Set 
  • FLIP-FLOP HUB:  Sealed, Low-Flange Hub - Easily Ride Fixed Gear or Single Speed
  • TIRES: Michelin Dynamic Sports 
  • CRANK: Essor USA Aerodash - 170MM - 7075 CNC Chainring
  • GEAR RATIO: 48x16
  • HEADSET:  FSA No.42/ACB - Integrated and Sealed
  • HANDLEBARS: Deda RHM02 31.8mm Track Drops
  • STEM: 3D Forged - 90MM ext
  • BRAKES:  Includes Front & Rear Brakes 
  • SEATPOST:  Oversized 31.6mm
  • SADDLE:  Microfiber 

*Pedals not included.

SIZE:  6 Frame Sizes to fit any Rider Height from 5'0" to 6'6" (Size 55cm Pictured)

WEIGHT:  16lbs 6oz 
*(Weights Taken Using a Size 55cm Frame w/ no Brakes or Pedals)


Risk-Free Purchase - State Bicycle Co. offers FREE EXCHANGES* -If this item doesn't work out, we'll send you a return label and exchange for free!

    Click Here for Size Chart and Specs

    RETURNS & Exchanges: State Bicycle Co. proudly offers FREE RETURNS for EXCHANGES - please see details of our Return Policy here.

    SHIPPING:  Most in-stock items ship within 1 business day! Tracking information is provided upon shipment. Learn more about our Shipping Policy

    ASSEMBLY: Complete Bicycles will ship 90% built and require only basic tools and knowledge to complete the build. However, a fully assembled bicycle also needs to be tuned and adjusted (oftentimes with specialty tools). We strongly encourage having your bike professionally assembled to validate your warranty and to ensure a safe and lasting ride.

    WARRANTY:  Warranty activated when you submit proof of professional assembly. 

    • 5-year Warranty on all bicycle frames
    • 1-year Warranty non-consumable parts
    • 2-year Warranty on Essor USA products

    Learn more about our Warranty Policy.

    Size Charts and Specs:  Detailed Size Charts and Specs can be found here:  Size Charts & Specs.

    SUPPORT:  We pride ourselves on having a friendly and knowledgeable staff. Contact us and we'd be happy to help you out in any way we can.

    Customer Reviews

    Based on 8 reviews
    Fabulous Bike

    Beautiful finish and styling. More importantly the bike is fast and comfortable. I highly recommend the Brooks seat upgrade and going with the bullhorn handlebars; though choice of handlebars is more of a « what works best for you » decision

    Undefeated 2

    Absolutely love the bike! It's my first fixed gear so riding it is taking some getting used to but I'm having a blast doing it. The black prismatic colorway is absolutely stunning in person. My only complaint is that the stock aerodash crankset apparently flexes under power and creates an annoying clicking noise so I had to pretty much immediately upgrade to a sram omnium set (which I had planned to do anyway but just not so soon). Other than the cranks though, the bike is a blast to ride and I'm stoked to have gotten to support an Arizona brand (I'm originally from AZ but living in VA).

    Beautiful, fast, all around badass

    I’ve been drooling over this bike since the last models come ways, so when i got the itch for a new bike I had to go with the undefeated 2. I ordered it through my lbs and when I went to go pick it up I was floored. This thing is gorgeous. I put some 25mm Vittoria corsas on it instead of the stock 23s because the roads in my town are awful. It rides like a dream even on rough streets now. The 46/18 ratio is perfect for me since I live in a more flat area. The aerodash crank set is pretty damn sweet too. That thing is stiff! I swapped out the seatpost and saddle and it’s been pretty great to me so far. Definitely recommend this beast

    Undefeated II - Black Prism Edition

    The Undefeated II - Black Prism Edition is a such great bike and also has an awesome color.

    Straight up beast

    I’ve been in love with the undefeated models since the previous color way, so when I decided it was time to get a new bike I considered a few others but ultimately decided to go with the undefeated. And man I’m glad I did. I went to my local bike shop and had them order me. When I went in to pick it up, I was floored. The paint job on it was absolutely beautiful. I went with some 25mm Vittoria corsas over the stock 23mm tires because the roads in my town are awful and 23’s just wouldn’t cut it. The aerodash crank set is amazing and stiff as hell. The 48x16 ratio is perfect for the flat town I live in. The bike is fast and super light. All in all this bike is absolutely amazing and beautiful. I would recommend the undefeated 2 to anyone who wants a badass fast as balls freedom machine. Buy it, you won’t regret it


    Undefeated II - Black Prism Edition

    Love It So Far!

    Ive only ridden about 100 miles so far but this bike it very fast, comfortable, beautiful, and light. It has gotten a lot of compliments, too. The paint is super sick and I can’t wait to do some more rides.


    This bike is rad - even has rainbow SPARKLES on the frame which adds to the awesome. Was delivered quickly and without any damage.