Black Chameleon Finish
A black frame with colour-shifting Unknown logo decals that move through green and blue tones as light and viewing angle change.
Unknown LV3
Black Chameleon
Fixed Gear / Single Speed Track Bike
The Unknown Bikes LV3 is a lightweight aluminium track bike built to ride as a fixed gear or single speed. Its hardened 6066-T6 aluminium frame is paired with a full 12K carbon fork.
A black frame with colour-shifting Unknown logo decals that move through green and blue tones as light and viewing angle change. The flip-flop rear hub uses a 17T fixed cog on one side and the included 16T freewheel on the other. Compare other Unknown LV3 finishes.
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8 kg
Approx. weight, size 55
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Full Carbon Fork
12K carbon, 30 mm rake
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Tapered Head Tube
Integrated tapered design
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6066-T6 Frame
Hardened aluminium
Key Features
Full Carbon Fork
Full 12K carbon fork with a 30 mm rake.
Aero Frame
The hardened 6066-T6 aluminium frame uses the LV3 aero frame profile.
Tapered Head Tube
The LV3 frame uses a tapered head tube at the front end.
Built for City and Track
The LV3 pairs a hardened 6066-T6 aluminium frame with a full 12K carbon fork and a tapered head tube. Its track-focused layout is designed for responsive urban and track riding.
The drivetrain uses a 46T chainring. Ride fixed with the 17T fixed cog for a 46T × 17T setup, or flip the rear wheel to use the included 16T freewheel for a 46T × 16T single speed setup.
Compact 420 mm drop bars provide multiple hand positions. The bike includes front and rear brakes, pedals and straps, and arrives approximately 90% pre-assembled.
What's Included
Flip-Flop Hub
17T fixed cog on one side, included 16T freewheel on the other.
Front & Rear Brakes
Front and rear brakes fitted as standard.
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Pedals + Straps
Included with every complete bike
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90% Pre-Assembled
Final assembly required before riding
Specifications
| Frame | Unknown LV3, 6066-T6 aluminium |
|---|---|
| Head tube | Tapered head tube |
| Fork | Unknown full 12K carbon, 30 mm rake |
| Hubs | Unknown Fix/Free, 28H, sealed bearing |
| Chainring | 46T, 130 BCD |
| Fixed cog | 17T |
| Freewheel | 16T, included |
| Handlebars | Unknown Compact 420 mm drop bar |
| Brakes | Unknown brake set, front and rear |
| Tyres | 23c |
| Weight | Approx. 8 kg, size 55 |
Show all specifications
| Stem | Unknown 90 mm |
|---|---|
| Brake levers | ZST single speed |
| Crank arms | Unknown 165 mm, 130 BCD |
| Chain | KMC Z510, 1/2" × 1/8" |
| Rims | Unknown 28H |
| Seatpost | Unknown 27.2 mm, 300 mm, 20 mm offset |
| Saddle | Unknown |
| Bottom bracket | 68 × 103 mm, BSA, square taper |
Sizing
- 53152–168 cm
- 55166–178 cm
- 58176–185 cm
- 61183–200 cm
Frame size and recommended rider height. Between sizes? Contact us and we'll help you choose the best fit.
Frame Geometry
Detailed LV3 frame measurements in millimetres. To choose your size, start with the rider-height guide in the Sizing section.
| Frame size | S (53) | M (55) | L (58) | XL (61) |
|---|---|---|---|---|
| Top tube length (C‑C) | 535 | 537 | 552 | 573 |
| Seat tube length (C‑T) | 530 | 550 | 580 | 610 |
| Seat tube length (C‑C) | 482 | 502 | 519 | 539 |
| Head tube length | 115 | 135 | 150 | 170 |
| Down tube length | 606 | 606 | 615 | 629 |
| Seatstay length | 355 | 355 | 355 | 355 |
| Chainstay length | 372 | 372 | 372 | 372 |
| BB drop | 45 | 45 | 45 | 45 |
C‑T: measured from the top of the top tube to the centre of the BB shell. C‑C: measured from the centre of the top tube to the centre of the BB shell.
Fixed Gear & Single Speed
A fixed gear bike has the rear cog locked to the hub, so the cranks turn whenever the rear wheel turns. A freewheel single speed lets the rider coast while keeping a single gear ratio.
The LV3 flip-flop hub lets you choose: ride fixed with the 46T × 17T setup, or flip the rear wheel to run the included 16T freewheel for a 46T × 16T single speed setup.
Frequently Asked Questions
Is the Unknown LV3 fixed gear or single speed?
Both. The flip-flop rear hub lets you ride fixed gear with the 17T fixed cog or turn the rear wheel around and use the included 16T freewheel as a single speed.
Does the Unknown LV3 include a freewheel?
Yes. A 16T freewheel is included. The opposite side of the flip-flop hub uses a 17T fixed cog.
How assembled is the Unknown LV3 when delivered?
It arrives approximately 90% pre-assembled. Final assembly is required before riding.
What size Unknown LV3 do I need?
Use the sizing guide above to match your height to the recommended frame size. If you are between sizes, contact us and we'll help you choose the best fit.
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Free EU Shipping
On orders over €500
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5 Year Warranty
On all frames
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Secure Payment
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