A typical electric bike starts at $1,000—and can top $10,000 or more. Even a cheap, low-quality model might cost $500. But a new attachment is designed to turn any bike into an e-bike for as little as ...

RotaLuber may be the fastest and most efficient new way to lubricate your chain – saving time and chain lube in the process.

That said, a year later, one such additional purchase has arrived, in the form of the VelocityOne Multi-Shift – an add-on ...