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Yamaha R1 Custom by Speedconcepts

Tyson Timperley, owner of Speedconcepts in Milwaukee and Todd Treffert (fatty owner) came to an idea to build something different. One donor Yamaha R1 and ten months later – we have ourselves a Fatty R1. Probably the only hardtail R1 in the world, the bike features a huge Ron Davis racing radiator in fiberglass shroud, R1 suspension (obviously only on front) and brakes, while electrics were kept stock.