The Honda S2000 was the fastest naturally aspirated four cylinder, although now the lotus elise is faster and uses an NA 4 cyl as well, but the s2000 has more horsepower. Quickest 4 cyl would probably be the Subaru WRX STI, they're turbocharged 4 cylinders; they run about a 13 flat 1/4 mile(mostly because they're all wheel drive) and have about 300hp.
the fastest stock 450 ATV is the ds 450 by can-am.
mine
the fastest stock fourwheeler is a ktm 525xc
The fastest dirt bike in stock is a Suzuki But most lots of people don't agree they normally think its the ktm that's all a opinion.
ltr 450r
cell phones
stock, its probably the GSXR1300 or the ZX14R
Dodge ram srt10
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the fasted stock SUV is a Honda cr-v
The Truffade Adder has a stock speed of 8.6 hich makes it the fastest car in GTA5
stock are all about the same, modifications are all the difference