🛡️ Independent certification

Tested. Certified.
Verifiable.

Every Twitter bike is built to the same European safety standards the big brands must pass — and unlike most direct-to-consumer brands, we publish our certificates so you can verify them yourself, right now, on the certifier's official registry.

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EU Product Safety — Bikes

EN ISO 4210-1 / 4210-3 : 2023

The international bicycle safety standard: frame impact tests, fork fatigue tests, braking and structural requirements. It's the same standard applied to every bike legally sold in the European Union — whatever the brand.

Certificate M.2025.206.C120567
Attestation of Conformity · EU Reg. 2023/988 (GPSR)
Valid through June 2030
Verify this certificate ↗

EU Safety — Electric Bikes

EN 15194 : 2017 + A1 : 2023

The European EPAC standard for e-bikes: electrical safety, motor assistance limits, EMC and mechanical integrity — covering our full electric line (EM5, EM6, EM8, EM10, EM19, EC1 and more).

Certificate M.2025.206.C120673
Machinery Directive 2006/42/EC · Annex VIII
Valid through June 2030
Verify this certificate ↗
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Factory Quality System

ISO 9001 : 2015

Our factory's quality management system is independently audited — design, production and sale of bicycles — with surveillance audits at regular intervals to keep the certificate alive.

Certificate 11424Q410352R0M
IAF / CNAS accredited certification
Valid through October 2027
Verify via official registry ↗

"Direct from factory" doesn't mean "unregulated". It means you get the bike that passed the same tests — without paying for the dealer network on top.

Inside the Testing Center.

Straight from the factory floor — where your frame is built and beaten before it ships.

Carbon LayupToray fiber sheets laid by hand — EPS inner-mold forming
Impact & Fatigue RigsThe machines behind the ISO 4210 numbers
Frame Quality ControlEvery frame checked on the bench before assembly

The material itself.

Aerospace-grade fiber classes

Our frames use Toray T800 / T1000 / T1K high-modulus carbon — the same fiber classes engineered for aviation-grade structures, laminated for stiffness where you sprint and compliance where you sit.

Serviceable by design

Threaded T47 bottom brackets (no press-fit creaks) and standard-size sealed bearings — any bike shop on earth can service it, years from now, without depending on us.

Built to order, tuned at the factory

Every bike is assembled complete, gears tuned, brakes bled, torque-checked — then partially disassembled only to fit the box. You finish 4 steps at home.