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We are an independent review site — not a customer support channel for kit manufacturers. If you have a technical problem with a kit you have purchased (installation issues, firmware errors, defective unit), please contact the brand directly through their official support channel. We cannot help with individual product faults or warranty claims.
Legal reminder: All tuning kits reviewed on this site are intended for off-road use only. Under the Highway Act 1988, electrically assisted pedal cycles must not provide assistance beyond 15.5 mph on public roads. Fitting a tuning kit on a bike used on public roads is illegal and voids the manufacturer warranty.