Osram now offer two new motorcycle bulbs to ... They are available as H4 and H7 bulbs. Their distinctive marks are a silver cap and the blue-coated bulb – a real eye-catcher in any motorcycle ...

Prices are for a pair, and – with the exception of the Halfords bulbs – all are from online retailers. Price played a minor role in our ranking. Osram triumphed last time we tested H4 bulbs ...

The H4 twin-filament bulbs we tested appeared in the Sixties, but advanced production methods have allowed firms to push them to the limit. Take Osram’s Night Breaker Plus; it uses filters on ...

The retrofit lamps are intended as a replacement for the halogen bulbs in conventional ... more vehicles. Osram currently has ten approved LED lamp types including H1 and H4 for over 1000 models ...