i need to know the 300ex the 400ex and cr125???

 

stock 300ex goes around 55mph.

 

400EX=68-69

 

my 250x (300ex) tops out at 63 mph but theres some work under the hood

 

The 300ex goes around 55-60 400ex goes 68-72 and i think the CR125 goes like 80 i anit sure bout that

 

i thought yz125's,cr125's and other 125cc motocross bikes top out at like 65mph.Atleast thats what my dealer said they top out at,but they get there a whole lot quicker than a atv.

 

nah they can hit mid 70's m,aybe even 80.

 

Ive had my cr125 goin about 73 down a rode and wasnt full bore yet but pretty close

 

i had a guy follow me in his truck and my TB does 53 w/ a 42tooth sproket(i told u that to tell u this)my friend has a 300ex and he cant keep up. His is brand spankin new too so i dont think a stock 300ex goes too terribly fast. Another guy i know has a 400ex and it does arround 65.(TrailTech speedometer) an with the right gearing that CR125 can go as fast as u want it too

 

a cr125 will do AT LEAST 80 with stock gearing. My friend has one and we were racing through a field. He was about 35 feet ahead of me and was just hitting 5th gear. those things are FAST.