adidas Racer TR21 "Black Gum"
The adidas Racer TR21 "Black Gum" (GX4209) released in April 2022.
Original retail (2022): $75 · Lowest resale ask: $67 on Flight Club (Nov 14, 2026)
Colorway: Core Black/Core Black/Gum · Style code: GX4209 · Release date: April 2022 · Lowest resale ask: $67 · Availability: Available now
Source: GOAT's catalog · stores checked Nov 14, 2026, 4:22 PM ET
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