The index-shifting decade: Shimano Dura-Ace 7400 (1984) and the 600 6400 group (1988), SunTour's Cyclone Mk II and Superbe Pro, and the Mavic MA40 clincher rim. Rear spacing grew from 120 to 126 and then 130 mm as cog counts rose.
15 references tracked.

Shimano Dura-Ace 7400
DerailleurShimano· ref RD-7402
$45–$70 typical ask
175 on eBay

Shimano Dura-Ace 7400
DerailleurShimano· ref FD-7400 series (FD-7410 later)
$35–$70 typical ask
93 on eBay

Shimano 600 / Ultegra 6400
DerailleurShimano· ref RD-6400
$30–$50 typical ask
93 on eBay

Shimano 600 / Ultegra 6400
DerailleurShimano· ref FD-6400
$20–$40 typical ask
106 on eBay

SunTour · Cyclone Mark-II (3500; GT long cage 3700)
DerailleurSunTour· ref Cyclone Mark-II (3500; GT long cage 3700)
$40–$60 typical ask
210 on eBay

SunTour Superbe Pro
DerailleurSunTour· ref FD-SB00-SSH (clamp-on) / FD-SB00-SSB (braze-on)
$45–$95 typical ask
66 on eBay

Shimano Dura-Ace 7400
ShifterShimano· ref Dura-Ace 7400 SIS down-tube levers (6-, 7- or 8-speed)
$80–$200 typical ask
27 on eBay

SunTour · Power Ratchet (ratcheting friction levers)
ShifterSunTour· ref Power Ratchet (ratcheting friction levers)
$25–$40 typical ask
58 on eBay

Shimano Dura-Ace 7400
CranksetShimano· ref FC-7400 series (FC-7410 from 1994)
$100–$220 typical ask
71 on eBay

Shimano 600 / Ultegra 6400
CranksetShimano· ref FC-6400
$50–$80 typical ask
127 on eBay

SunTour Superbe Pro
CranksetSunTour· ref CW-SB10 (1990 catalog)
$160–$390 typical ask
77 on eBay

Shimano Dura-Ace 7400
BrakeShimano· ref BR-7400 series (single-pivot; dual-pivot from 1991)
$70–$110 typical ask
250 on eBay

Shimano 600 / Ultegra 6400
BrakeShimano· ref BR-6400
$35–$55 typical ask
172 on eBay

Shimano Dura-Ace 7400
Hub & wheelShimano· ref Dura-Ace 7400-series front hub and freehub
$45–$150 typical ask
135 on eBay

Mavic · MA40
Hub & wheelMavic· ref MA40
$140–$360 typical ask
65 on eBay