53 Amber LEDs per side, the inserts produce a bright amber running light with full-contrast amber turn signal thats virtually invisible when off. Open honey-comb grill to allow air to flow through. Unit simply snaps in place with plug and play wiring for easy installation. Optional Lower Fairing Blocker Plates part # 0521-1898 (sold separately) can be installed behind the honeycomb grill for a solid panel appearance. Replaces OEM 57100151 (Left) and 57100152 (Right).