YAMAHA manufactured the RGX 420 SD6 (Drop 6) between 2001 and 2003. It was a baritone (longer scale) version of the RGX 420 S, which allows for a lower tuning. The RGX-420S D6 had a solid alder super-strat body (Satin Black, Satin Gray or Metallic Green finish). Pickups were 2 humbuckers with 1 selector switch and a bypass "blower" switch. The black hardware included a double locking tremolo.