Thumb Throttle bike

[rf928]

Hello all,

I am getting in to riding more bikes, and right now I have a KTM 85 (08). I was wondering, if anyone has installed a thumb throttle on this, or any bike? I would like an idea as what to start looking for as far as the throttle off a quad or an aftermarket.

Just wondered, because I have a hard time hanging on with a twist.

Thank you

[slightlybent47]

Some people like them on bikes and some don’t.
I don’t; they can still get you in trouble, just in deferent ways.

[outacontrol]

possible.. on bikes that use a keihin carb (most 250fs) u can use a honda 250r/400ex/450r setup. i did it on a ktm 250f and now my kaw 250f

[deathman53]

he is talking about a 2 stroke here. He has to use a thumb throttle from most any honda out there and a motion pro cable for several models: ONLY 85 atc250r, 83-85 atc200x(I had a twist throttle kit that worked on my atc250r and also works a 27mm PD carb for 86/87 atc2000x) and motion pro cable for honda throttle to pwk carb. I would use a honda 85-89 atc/trx250r thumb throttle or a 83/84 honda atc250r thumb throttle, those have the range to open up a carb 38mm and larger. Most of the 4 stroke thumbs don't open up a large carb w/o the use of a linkage that is inside of most 4 stroke carbs. That is why they have a short throw, just the thumb throttle, but can open a 40+mm fcr carb.

[rf928]

Thank you for the replies, as we are looking into a 250f (YZ or KTM) after this season.

The carb on my bike, is a Keihin PWK 28.

I will look into a honda, but we don't have any in the shed... So I guess we will read some more, and do some measuring!

Thank you again, and feel free to express anymore thoughts.

[outacontrol]

Originally posted by rf928
Thank you for the replies, as we are looking into a 250f (YZ or KTM) after this season.

The carb on my bike, is a Keihin PWK 28.

I will look into a honda, but we don't have any in the shed... So I guess we will read some more, and do some measuring!

Thank you again, and feel free to express anymore thoughts.

as i stated above, go on ebay, find a honda 250r, 450r setup with cable, and it will work perfect on those two bikes..

[IOWAracer]

Find a honda style thumb throttle and call your local shop most will build you a cable and set up for you for around 50 bucks

[outacontrol]

on my ktm 250 sxf and also my 09 kx 250f, i didnt even need a custom cable. the stock honda cable was perfect..

[BlaineKaiser450]

I pulled the throttle assembly and cable right off of my 04 450r and it matched perfectly to my kx250f in about 15 minutes

[IOWAracer]

That's awesome, but that wasn't his question he has a KTM 85 and that won't work for him...

[deathman53]

he needs a 85-89 atc/trx250r throttle or 83/84 atc250r throttle and 85 ONLY 85 atc250r cable or the cable motion pro sells for honda throttle to pwk 38/39. A 400ex or 450r throttle may work also, but good chance it won't open the carb all the way. Cable is motion pro 01-0411 or 02-0136.

[85and93]

I have a thumb throttle from a 400ex on my klx110. A little bit rigged but im using the stock cable

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