Below you will see lighting adapted for Suzuki Gsx-R 600 U1 2001 to 2002. Depending on the version, the Gsx-R 600 U1 uses H4 or H7. Below you will see the correct lighting for each light position, plus additional lights and ballast that fits the car.
The Gsx-R 600 U1 uses H4 (halogen) in the low beam.
H4 is the same bulb for low and high beam, so one pair is enough. If you choose Luxtar HERO, adjust the headlights down slightly after installation so that you do not dazzle oncoming traffic.