Santa Cruz co-founder Rob Roskopp took up mountain biking on a GT Karakoram during his pro skateboarding years, 1984 to 1990, according to BikeRadar.
Known components
None recorded yet. Our confirmed sources for this model don't list its parts. If you have a catalogue page or an original spec sheet, please send it in.
What the sources say
| Year | Name · variant | Details | Source |
|---|---|---|---|
| Undated | GT Karakoram | Rob Roskopp took up mountain biking on a GT Karakoram. (1984–1990 (Roskopp's pro skating years)) | BikeRadar |
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Sources
Last updated 19 October 2026. Every fact on this page comes from one of these.