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In this exaggerated example, we can see where the use of a lower 5.61 gear over a 5.48 gear might improve acceleration while showing the same rpm at the end of the straightaway. Looking at 6,800 rpm, we see where we reached that speed approximately 0.8 seconds sooner with the 5.61 gear. The real gains will be smaller, but still significant. Notice how the 5.61 speed gain trails off towards the end of the straightaway but is still higher than with the 5.48 gear at 7,200 rpm.