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Highest indicated speed is 157 in the X5M, and it had more in it, but traffic was approaching in Mexico, and the bike next to me was fading so I let off.
Velos tune and K&N filters are the only mods. Same day was running consistent 13.2 1/4 miles, and weighed in at 5600 lbs. approx 5400 Ft elevation as well.
There have been a few well sorted little 4 cyl cars that have seen well past the end of their speedos in past days, but calculations on gearing probably have them topping out at about 150.
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