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Unknown Bikes Europe
Europe’s Home for Premium Fixed Gear & Single Speed Bikes
The official European source for Unknown fixed gear and single speed bikes, frames and components. Ride fixed, or flip the wheel and ride single speed.
- €699From
- €300Save up to
- FreePedals & straps
Free Pedals & Straps
Worth €50 with every bike
Free Standard Shipping
No minimum order
Ready to Ride
90% pre-assembled
Freewheel Included
Ride single speed or fixed gear
Front & Rear Brakes
Included with every complete bike
Secure Payment
Visa, Mastercard, PayPal & Apple Pay
Bestsellers
Our most popular complete bikes, black and silver first.
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Model spotlight
The Singularity, Up Close
A 6066-T6 aluminium frame, a 12K carbon fork and an aero seatpost with clamp: about 7.5 kg in size 55, without pedals. Ride it fixed, or flip the wheel and use the included 16T freewheel.
- Sizes 52, 55, 58 and 61 with a rider-height guide
Upgrade Your Ride
Parts that fit Unknown frames.
About Unknown Bikes Europe
Unknown Bikes Europe is the official European source for Unknown fixed gear and single speed bikes, frames and components, shipped from our European warehouse.
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Fixed Gear or Single Speed: One Bike, Both Ways
The LV3, Singularity and Bass-X come with flip-flop rear hubs and a 16T freewheel in the box. Ride fixed gear for direct, connected control, or flip the rear wheel to coast as a single speed.
Which Unknown Model Fits You?
The LV3 is the flagship track bike: a 6066-T6 aluminium aero frame, full 12K carbon fork and tapered head tube. The Singularity pairs a 6066-T6 frame with a 12K carbon fork and aero seatpost. The Bass-X uses a hardened 6066-T6 frame and a full 12K carbon fork. The PS1 has a 6061-T6 aluminium frame and a carbon fork with an aluminium steerer.
Finding Your Frame Size
Each model page lists frame sizes with rider-height ranges, so you can check your size before you order. Most Unknown complete bikes come in sizes from 52 to 61.
Delivery and Assembly
Every complete bike arrives approximately 90% pre-assembled, with front and rear brakes, plus free pedals and foot straps. We recommend professional assembly by a qualified bicycle shop. Free Standard Shipping, no minimum order, to all countries we currently ship to.
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