top speed

[tcoop474]

I was told by the builder of my motor that my flywheel was also lightened

[russ]

i run a 12/50 on my kx5 and it has no top speed think i got it to 95km thats in woods trails thats what the gps said but man does it have alot of low end power today for some reason gps said i got up to 142 km

[sandblaster]

142 Km/hour = 88.23 miles/hour.
That's about right.
Get it on a hard flat surface, pin it in 5th until the head starts to shake, loosen your grip and let the front end walk around a bit, and I'll bet you can get 90 out of it   

[russ]

every thing is stock on my bike but the 12/50 sprockets how can i get some more power out of it for cheap i just did new piston re plated the cylinder but what else can i do for fairly cheap . i am lookin for more grunt inthe bogg holes , i ride alot of mudd boggs and 1st and 2nd good just too short and 3rd and 4th it takes a min to power up and light em up , so what can i do for more quicker bottom end/power quicker

[Polar-Bus]

every thing is stock on my bike but the 12/50 sprockets how can i get some more power out of it for cheap i just did new piston re plated the cylinder but what else can i do for fairly cheap . i am lookin for more grunt inthe bogg holes , i ride alot of mudd boggs and 1st and 2nd good just too short and 3rd and 4th it takes a min to power up and light em up , so what can i do for more quicker bottom end/power quicker

I don't know what you are looking for, with 12/50 gearing 1st and 2nd are basically useless because you have extremly high gearing. What do you mean by " more grunt in the bog holes" ?   A bone stock KX500 has about 58 hp, that should be MORE than adequate to charge any mud hole..

[Polar-Bus]

I have 15/45 gearing and have ran my bike out on El Mirage Dry Lake with some friends with 650 four strokers (that have speedometers) and I can walk away pretty good from my buddies bike that runs just under 100 mph. This is with mild porting, fmf desert pipe, stock (brand new) reeds, and spot on jetting. I only did this one time when first bought my 500 just to test it out and to see if the wheels/tires were balanced, but I didn't buy this thing to run out where a road bike can!

Odd, I tried 15/45 gearing out on the ice, same basic mods (less porting) and my engine would not pull this gearing on top end.  My speeds and rpms flattend out at about the same 85 mph mark.

I was curious about why my bike wouldn't pull this gearing claim. I went and dug out my "speed" gearing sprockets and I posted incorrect info. The optional gearing I tried was 15/39 . So this gearing is far more taxing on the engines torque.  This explains why my engine was flat pulling on top end.

Sorry for the senior brain fade moment..... i'm getting too old for this $hit...       LOL

[81cr450]

In about 1992 Dirt Rider did an article on the baja prep'd KX500. Balanced motor but they said the port work was minimal, factory team yeah right, but the speed they quoted stuck with me as 120mph. Dont remember the gearing, but does this sound right to anyone else. It'd have had to be some long old gears & one stout motor to pull it

[Polar-Bus]

In about 1992 Dirt Rider did an article on the baja prep'd KX500. Balanced motor but they said the port work was minimal, factory team yeah right, but the speed they quoted stuck with me as 120mph. Dont remember the gearing, but does this sound right to anyone else. It'd have had to be some long old gears & one stout motor to pull it

132 mph !!!!   

http://twostrokemotocross.com/2009/06/worlds-fastest-mx-bike-kawasaki-kx500/

[alward25]

132 mph, Won't see that unless you have an OD 5th gear.  It seems like the Baja 500s were also running KLR 650 4th and 5th gears for more top end.  That's what Ty Davis said anyway.

[81cr450]

132 mph, Won't see that unless you have an OD 5th gear.  It seems like the Baja 500s were also running KLR 650 4th and 5th gears for more top end.  That's what Ty Davis said anyway.

Thats great info. Thats part of Y I ditched the cr5 they run out of legs. Even more up top  Now to find a klr650 tranny

[alward25]

17/33 T sprockets too.

132 mph, Won't see that unless you have an OD 5th gear.  It seems like the Baja 500s were also running KLR 650 4th and 5th gears for more top end.  That's what Ty Davis said anyway.

Thats great info. Thats part of Y I ditched the cr5 they run out of legs. Even more up top  Now to find a klr650 tranny

[454SS]

There was a video out with some helicopter crew chasing LR at a top speed of 118mph.  Squeeze in a few more mph's on tarmac.

[Motorrad]

There was a video out with some helicopter crew chasing LR at a top speed of 118mph.  Squeeze in a few more mph's on tarmac.

Anyone know which video is?  I'd love to see that

[81cr450]

There was a video out with some helicopter crew chasing LR at a top speed of 118mph.  Squeeze in a few more mph's on tarmac.

X2

[USMC 500]

There was a video out with some helicopter crew chasing LR at a top speed of 118mph.  Squeeze in a few more mph's on tarmac.

X2

This link is to a a great video on youtube.  Back in 93 there was a tv show called the extremnists......This is an episode that focuses on motorcycles.  They have a young Colin Edwards for roadracing and Larry Roeseler for off road.  Lots of good clips of larry and ty davis down in baja, adelanto and in their backyard of hesperia ca.  You can view the first few min for free but have to purchase the whole episode for like 3.99.  Very worth it.  Larry speaking of his baja experiences and some good kx500 shots.  check it out.  This is the time and era that I was mostly around them all.  I was actually present for some of the clips.
http://www.youtube.com/watch?v=bxeFpbhdVMo&feature=fvsr