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125 2T Questions

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I am really looking into getting a 125 2T and want to know some more about them. I will be riding trails for the majority of the time, and I want to know what I will have to do to make a stock 125 good for trails? Also what are all of the maintenance needs for a 125, how often do the require doing, and about how much do they cost? I have heard people talking about "top ends", what do these consist of? How much do parts for a top end cost? How often should I do one? Sorry for all the questions, but really want to know what I am getting into!

Thanks

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A "top end" when speaking about two strokes means; replacing the piston, piston ring, small end bearing, and associated gaskets. It is not a difficult maintenance task. About $150 - $200 for everything.

 

What was your previous bike? 

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I ride an 03 CR125 and only ride woods. As long as you keep it near or in the power band it's not bad at all. If you get an fmf fatty or pro circuit platinum pipe that would help the bottom end out. I change my gear oil every 4 rides or so and since it won't be pinned all the time like in mx, you won't need to do a top end as frequently as you'd think.

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I ride an 03 CR125 and only ride woods. As long as you keep it near or in the power band it's not bad at all. If you get an fmf fatty or pro circuit platinum pipe that would help the bottom end out. I change my gear oil every 4 rides or so and since it won't be pinned all the time like in mx, you won't need to do a top end as frequently as you'd think.

Ok, any other regular maintenance needs? (Besides oil changes)

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Ok, any other regular maintenance needs? (Besides oil changes)

Check air filter, lube chain, sprockets, all that kind of stuff but I'm sure that's nothing new for you. Just make sure you use high quality 2 stroke oil in 32:1 or 40:1 and you'll be all set
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At altitude a 125 or 150 needs some mods to rip up the trails......cut the bottom of the cylinder to advance the ports and mod the head for proper clearance and squish. An FMF Fatty and Shorty sliencer will also help the bottom end. You can play with a FWW and ignition timing too. Make sure the jetting is spot on for where you plan to ride.

 

I rode 125s for years all over Colorado from racing SX/MX to goat paths at 11,000 feet. You have to learn how to ride a small bore bike smooth with lots of momentum and you will be rewarded with some lines that will leave the "off road" bikes in your dust!

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At altitude a 125 or 150 needs some mods to rip up the trails......cut the bottom of the cylinder to advance the ports and mod the head for proper clearance and squish. An FMF Fatty and Shorty sliencer will also help the bottom end. You can play with a FWW and ignition timing too. Make sure the jetting is spot on for where you plan to ride.

I rode 125s for years all over Colorado from racing SX/MX to goat paths at 11,000 feet. You have to learn how to ride a small bore bike smooth with lots of momentum and you will be rewarded with some lines that will leave the "off road" bikes in your dust!

Ok thanks, can't wait

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These would all be better buys for Colorado than buying a 125 and modding it to make it work on trails.  But what do I know, I have only been riding in Colorado for 40 years....

 

I guess the 200's really are hard to find at a good price....

 

http://denver.craigslist.org/mcy/4604807235.html

 

http://fortcollins.craigslist.org/mcy/4601789175.html

 

http://cosprings.craigslist.org/mcy/4597276909.html

 

http://rockies.craigslist.org/mcy/4600798300.html

 

http://denver.craigslist.org/mcy/4601768009.html

 

These are the same bike

http://pueblo.craigslist.org/mcy/4548302423.html

http://pueblo.craigslist.org/mcy/4497449936.html

 

 

This one is a bit pricey but at $1600-$1800 would be a good buy

 

http://denver.craigslist.org/mcy/4593465301.html

 

 

http://denver.craigslist.org/mcy/4594140083.html

 

 

Not a bad price for a pretty new bike:

 

http://denver.craigslist.org/mcy/4595398643.html

 

Another KTM 150

 

http://denver.craigslist.org/mcy/4555714991.html

 

WR250F's

http://cosprings.craigslist.org/mcy/4592316444.html

http://rockies.craigslist.org/mcy/4536483182.html

 

 

 

Old School WR250 2 stroke....looks very clean

http://denver.craigslist.org/mcy/4601760481.html

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These would all be better buys for Colorado than buying a 125 and modding it to make it work on trails. But what do I know, I have only been riding in Colorado for 40 years....

I guess the 200's really are hard to find at a good price....

http://denver.craigslist.org/mcy/4604807235.html

http://fortcollins.craigslist.org/mcy/4601789175.html

http://cosprings.craigslist.org/mcy/4597276909.html

http://rockies.craigslist.org/mcy/4600798300.html

http://denver.craigslist.org/mcy/4601768009.html

These are the same bike

http://pueblo.craigslist.org/mcy/4548302423.html

http://pueblo.craigslist.org/mcy/4497449936.html

This one is a bit pricey but at $1600-$1800 would be a good buy

http://denver.craigslist.org/mcy/4593465301.html

http://denver.craigslist.org/mcy/4594140083.html

Not a bad price for a pretty new bike:

http://denver.craigslist.org/mcy/4595398643.html

Another KTM 150

http://denver.craigslist.org/mcy/4555714991.html

WR250F's

http://cosprings.craigslist.org/mcy/4592316444.html

http://rockies.craigslist.org/mcy/4536483182.html

Old School WR250 2 stroke....looks very clean

http://denver.craigslist.org/mcy/4601760481.html

Awesome thanks for all the links

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These would all be better buys for Colorado than buying a 125 and modding it to make it work on trails.  But what do I know, I have only been riding in Colorado for 40 years....

 

I guess the 200's really are hard to find at a good price....

 

http://denver.craigslist.org/mcy/4604807235.html

 

http://fortcollins.craigslist.org/mcy/4601789175.html

 

http://cosprings.craigslist.org/mcy/4597276909.html

 

http://rockies.craigslist.org/mcy/4600798300.html

 

http://denver.craigslist.org/mcy/4601768009.html

 

These are the same bike

http://pueblo.craigslist.org/mcy/4548302423.html

http://pueblo.craigslist.org/mcy/4497449936.html

 

 

This one is a bit pricey but at $1600-$1800 would be a good buy

 

http://denver.craigslist.org/mcy/4593465301.html

 

 

http://denver.craigslist.org/mcy/4594140083.html

 

 

Not a bad price for a pretty new bike:

 

http://denver.craigslist.org/mcy/4595398643.html

 

Another KTM 150

 

http://denver.craigslist.org/mcy/4555714991.html

 

WR250F's

http://cosprings.craigslist.org/mcy/4592316444.html

http://rockies.craigslist.org/mcy/4536483182.html

 

 

 

Old School WR250 2 stroke....looks very clean

http://denver.craigslist.org/mcy/4601760481.html

Great bikes and great prices out there.

Oxinbox21, he's right, any of those bikes would be a better choice for trails than a 125.

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Listen to these guys. I spent all day yesterday on my 2003 CR125 in the woods and it was brutal. Too much power exactly when you don't want it. 125 MXers are great little flickable bikes but you need to revalve the suspension, re-port the engine, add a flywheel weight and much more even to make them as fun as a KDX or KTM200. 

125s are fun in the open or flat stuff. Not good in steep singletrack. Why not get a bike that does it all?

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Listen to these guys. I spent all day yesterday on my 2003 CR125 in the woods and it was brutal. Too much power exactly when you don't want it. 125 MXers are great little flickable bikes but you need to revalve the suspension, re-port the engine, add a flywheel weight and much more even to make them as fun as a KDX or KTM200.

125s are fun in the open or flat stuff. Not good in steep singletrack. Why not get a bike that does it all?

Ok thanks everyone I will look for these bikes rather than a 125.

Thanks for all the help.

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