One-Piece Rigid Frame: Built for Stability
The BK-004 ditches the folding joint for an uncompromising one-piece high-carbon steel chassis that offers ultimate structural integrity. This rigid design ensures zero frame flex under its 440 lbs capacity, providing a rock-solid feel that traditional folding trikes simply can't match.
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Zero-Flex Engineering: A non-folding frame that maximizes durability and high-load stability.
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High-Carbon Steel: Industrial-grade material built to handle 60Nm of aggressive motor torque.
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440 lbs Max Payload: Massive frame strength designed for heavy-duty hauling and rider support.
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Rugged Longevity: Fewer moving parts mean a tougher bike with a significantly longer service life.




















