Tremec Tko 600 Transmission Shift Fork Comparrison
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Earlier Tremec 3550 and TKO transmissions utilize an aluminum shift fork (left). It was replaced with a steel shift fork (right) in later production TKO transmissions, TKO-500, and TKO-600. The steel fork is stronger; Hanlon Motorsports replaces the aluminum forks with steel ones during rebuilds. View Related Article
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