Aluminium is the default answer for a reason: it is 40% lighter than steel, immune to rust, and affordable. This page is the honest material guide — who should buy aluminium, who should not, and how our 6000-series alloy frames are built.
Weight: an alloy frame saves roughly 40% versus carbon steel at similar stiffness — the difference between one adult loading the chair alone and needing help. Corrosion: aluminium does not rust, which matters for coastal cities, winter road salt, and daily shower-adjacent use. Repairability: a dented alloy tube can be straightened or re-welded at any bike shop; carbon fiber cannot. Price: mid-way between steel and carbon — the value sweet spot for most families.
Aluminium fatigues differently than steel: repeated overloading produces cracks rather than bends, so the weight rating on an alloy chair is a real limit, not a suggestion — heavy users above 120 kg should stay with our carbon steel 5000 series. Alloy frames also transmit slightly more road vibration than steel; if the rider spends long days on rough pavement and is sensitive to it, the steel option rides softer. Neither limitation applies to the majority of users, which is why the 6000 series is our best-selling export line.
T6-tempered alloy tubing, robot-welded at load joints, powder-coated (not painted) so scratches do not expose bare metal. Fold hinges are machined, not cast — cast hinges are the failure point we see most in imported budget chairs. Every frame passes a 100,000-cycle folding fatigue test before the design enters production. Motors, brakes and controllers are shared across our platforms, so parts availability does not depend on frame choice.
Carbon saves another 20–30% of frame weight and looks premium, at 40–60% higher retail and with stricter repair options. Our rule of thumb after selling both for years: if the chair is lifted every day, carbon earns its price; if it is lifted weekly, aluminium is the rational buy. Both fold identically in our lineup — the choice is about weight versus money, not capability.
