The Unknown LV3 Black Chameleon is our flagship fixed gear bike, wrapped in a striking chameleon finish that shifts between black, green, and blue depending on the light. Built around a hardened 6066-T6 aluminum frame with aero-inspired track geometry, the LV3 delivers race-level stiffness at just 8kg in size M.
Every component is purpose-built by Unknown for fixed gear riding. The full 12K carbon fork with 30mm rake provides razor-sharp steering and absorbs road vibration — a major upgrade over standard alloy forks. The sealed-bearing Mushroom hub wheelset rolls ultra-smooth thanks to high-grade Japanese bearings, and the 46t/17t gearing gives you an ideal ratio for mixed urban and track riding.
Elite Performance Components
⚡Every component is purpose-built by Unknown for fixed gear riding. The full 12K carbon fork with 30mm rake provides razor-sharp steering and absorbs road vibration — a major upgrade over standard alloy forks. The sealed-bearing Mushroom hub wheelset rolls ultra-smooth thanks to high-grade Japanese bearings, and the 46t/17t gearing gives you an ideal ratio for mixed urban and track riding.
🏯The European edition comes standard with our full carbon fork instead of the alloy version. It makes a real difference in performance, comfort, and looks — well worth the upgrade.
🚀Premium Build
Hardened Unknown LV3, 6066 T6.
Full Unknown Full Carbon Fork,
Ultra-light 8kg Setup.
Combined Value
LV3 is shipped with drop bars, brakes, and free pedals with foot straps worth €50 included. Ready to ride out of the box.
⚙️Flip-Flop Freedom
Switch between Fixed Gear and Single Speed effortlessly. Our specialized Flip-Flop Hub gives you the best of both worlds.
Born from the underground track scene, Unknown Bikes bridges high-performance track engineering with street-level energy. We focus on the essentials: high-grade materials and minimalist aesthetics. We don't do fluff; we do fast.
Full Component Specifications
| Frame | Unknown LV3, 6066 T6 |
| Fork | Unknown Full Carbon Fork, 30mm rake, 1 1/8" |
| Headset | Integrated Unknown, SB, 45x45st., 1 1/8" |
| Stem | Unknown 90mm |
| Handlebars | Unknown Compact 420mm |
| Grip | Unknown Carbon |
| Brake levers | ZST single speed |
| Brakes | Unknown brake set |
| Chainarm | Unknown 165mm, 130BCD |
| Chainwheel | Unknown 46t, 130BCD, 1/2"x1/8" |
| Chain | KMC Z510 1/2"x1/8" |
| Rear cog | 17t |
| Rims | Unknown 28d |
| Hubs | Unknown Fix 28d, SB — Freewheel not included |
| Tires | 23c |
| Seatpost | Unknown 27.2mm, 300mm, 20mm offset |
| Saddle | Unknown |
| Bottom bracket | 68x103mm, BSA, Square taper |
📏 Find Your Fit
52 152cm – 168cm 55 166cm – 178cm 58 176cm – 185cm 61 183cm – 200cm*Recommendation: If you are between sizes, we recommend sizing down for a more agile urban ride.