think my ds650 baja x could handke it all i have done is a fmf power core 4 slip on and how much would i losse on bottum end and i shouldnt hit the rev limiter then in 5th gear at wfo

 

what is atock for a ds 14 tooth?
if it is you risk chain damage by going that big if stock is 15 you should be alright though and also if
a stock ds hits 76 mph give or take you should be well into the mid 80s

 

DS stock is 16t.

 

does anyone else have a setp like this with a 17 tooth and a slip on and how does it take off and can u still start out in 2nd gear

 

Yes it can.

 

with 20" tires it should be ok, but with 22" tires it may be too tall. It sure wont feel "fast" with 22s and 17/40..

 

Second gear starts are a snap if your not afraid to dump the clutch with the RPMs up there by the rev limiter! I even run a 17/38 combo with 20" tires .

 

I have this gearing with stock exhaust stock jetting. I also have K&N and RWR heavy clutch springs. In my opinion, I feel that I can use the low end better with the 17T. The stock gears are undergeared for the motors power curve, remember the 650 is actually a street bike motor capable of low- mid 100mphs on a motorcycle of about the same weight (BMW 650). With a pipe, you could easily pull an 18T but would be safer with the heavy duty clutch springs for durability. The 17T should give you around 82 mph, you WILL hit the rev limiter in 5th. The 18T will approach 90mph, again occasionally pinging the rev limiter in 5th. These combos with a new rev limiter should be 85mph + with the 17T and 93-95 with the 18T. Bottom end performance, oddly, seems better and mid range is even more of a beast and the top end speaks for itself. Use 20 inch tires with thes combos for best results.

 

i tried the 17 in the sand with stock engine, it wouldn't pull 5th

 

i've tried it wit my 22" tires, works ok but nothing special, like the 16t much better, but if it was for 20" tires i'd definetly go with a 17t