The 540R features a sculpted basswood body with rounded edges bolted to a maple neck with a 22-fret rosewood fingerboard with pearloid dot position markers. Components include DiMarzio IBZ/USA pickups with a humbucker mounted in a pickup ring at the bridge and a pair of C1 single-coils in the neck and middle positions, a double locking tremolo bridge and Gotoh tuning machines.
The Edge tremolo was replaced by the Lo-Pro Edge when that bridge was released in 1991.
The 540R was discontinued after 1994.
Specifications for 540R
Model name: 540R/ PRO540R
Year(s) produced: 1987–1994
Sold in: Worldwide
Made in: Japan
Finish(es):1987: BB (Bright Blue Burst) / BK (Black) / BR (Bright Red Burst) 1988-1989: BK (Black) / JB (Jewel Blue) / JR (Jewel Red) /
SK (Shocking Pink) / JW (Jewel White)/FB (Fountain Blue) (1988) 1990-1991: BK (Black) / CM (Coral Mist Metallic) / JB (Jewel Blue) / RR (Ruby Red) / WH (White) 1992-1994: BB (Bright Blue Burst) / BK (Black) (1992) / BR (Bright Red Burst) / WH (White) (1992)
The type of fingerboard inlays have been changed two times for the 540R. First year's models have smaller pearl dots. This changed somewhere around 1989 to the more standard sized pearl dots. On 1990-1992 models these dots were combined with a 'Custom Made' inlay on the 21st fret. Unlike what is stated, the 540R models with this inlay were not actually 'custom made' specially ordered personalized guitar models, all standard production models featured them. Other models with this kind of inlay are the 540S and 540R-LTD.