For R100 GS PD and R100 GS beginning with model year 1991.
This dual headlight setup is a direct replacement for the original H4 unit. The lights are 9cm or 3-1/2" in diameter. One lamp uses an H4 bulb and functions as the low beam as well as one high beam, plus it houses the parking lamp. The other lamp switches on as the high beam only and utilizes an H7 55w bulb.
This light offers superior high beam performance than the stock unit and it is a good alternative to the very expensive original replacement, if you have a broken or cracked headlamp.
The lights are held in place by a multi layer aluminum construction. Stainless steel hardware is used and all wiring and bulbs are included. The original adjustment mechanism is retained.