Cyron D Series Light Bulbs - Bulb H4 Universal Fitment Small

Cyron D Series H4 LED light bulb engineered for V-twin motorcycles with a compact body design that fits in over 90% of stock headlight housings. No mechanical fans, external drivers, or heat sinks — just a plug-and-play LED replacement that trades maximum brightness for universal fitment in tight spaces.

Features

• Compact body fits 90% of V-twin headlight housings
• No mechanical cooling fans or heat sinks
• No external driver modules required
• H4 universal fitment
• Easier installation in OEM housings

Specifications

• Brand: Cyron
• Manufacturer Part #: ABH4D
• UPC: 811467013331
• Length: 4 in
• Width: 3 in
• Height: 2 in
• Weight: 0.16 lbs
• Country of Origin: China (Mainland)

Fitment

Fits V-twin motorcycles including Harley-Davidson and Indian Motorcycle models with H4 headlight sockets.

Frequently Asked Questions

Will this fit my stock headlight housing?

Yes — the compact design fits over 90% of V-twin housings where traditional LED bulbs with cooling fans won't fit due to size.

Do I need to install an external driver or module?

No. Cyron D Series bulbs are plug-and-play with no external drivers, wiring harnesses, or heat sink assemblies required.

Is this as bright as other LED headlights?

The compact design prioritizes fitment over maximum output. You gain reliable LED performance and universal fitment at the cost of slightly less raw brightness than larger fan-cooled LEDs.

What's the fitment for Indian and Harley bikes?

This H4 bulb fits most standard V-twin headlight sockets across Harley-Davidson and Indian Motorcycle lineups — verify your bike uses an H4 connector before ordering.