A forum for owners of Yamaha TTR250 trail and enduro bikes!

DemonX112 · Newbie

Exhausts

TT-R250M · Super Guru

Welcome to the forum Kimi

The reason the exhausts are only listed to fit 1999~2006 is because that is when production of TTR250's stopped in other countries. In Australia, they continued on making the same bike (with a black frame) until 2013. The reason they do not list exhausts to fit 1993~1999 is that they don't know it fits haha. So to answer your question- YES, all TTR250 exhausts are interchangeable.

Selecting the right exhaust for you will come down to whether you like a LOUD exhaust or a quiet one....

If you don't mind loud, I would suggest the FMF Powercore 4- http://www.ebay.com.au/itm/FMF-PowerCore-4-exhaust-muffler-silencer-Yamaha-TTR250-1999-2006-/230784787080?pt=Motorcycles_Parts_Accessories&hash=item35bbd86288

Or a Pro Circuit T4- http://www.ebay.com.au/itm/99-06-Yamaha-TTR250-Pro-Circuit-T4-Slip-On-Exhaust-/200812552623?pt=Motorcycles _Parts_Accessories&hash=item2ec15c61af

If you like it to be (half) quiet until the throttle is rolled on, I would suggest the FMF Q4- http://www.ebay.com.au/itm/NEW-FMF-Q4-Q-4-QUIET-EXHAUST-MUFFLER-99-06-YAMAHA-TTR250-TTR-250-TT-R250-/271093581176?pt=Motorcycles_Parts_Accessories&hash=item3f1e6fc578

If you like quiet, it's best to bite the bullet and get a Motad. As far as I am aware of, there is no quieter exhaust available that is worth fitted.

If you are fitting an aftermarket exhaust, I would advise to enlarge the pilot and main jet 2~3 sizes. The standard jets for your bike will be a #50 pilot and #147 main jet. Mikuni jets are said to be ten sizes larger than standard Teikei jets. For example- if using Mikuni small round jets, a #140 is basically the equivalent of a Yamaha/Teikei #150, so keep that in mind. This is You should also buy an aftermarket air filter like a GYT-R, No Toil, Twin Air etc.

Here is a link to a #140 small round Mikuni jet on eBay- http://www.ebay.com.au/itm/GENUINE-MIKUNI-SMALL-ROUND-MAIN-JET-SIZE-140-N102-221-140-/350927524624?pt=Motorcycles_Parts_Accessories&hash=item51b4e91310

Link to #43 Mikuni VM28/486 pilot- http://www.ebay.com.au/itm/Genuine-Mikuni-Pilot-Jet-VM28-486-Kawasaki-Suzuki-Yamaha-/271164336359?pt=AU_Motorcycle_Parts_Accessories&hash=item3f22a768e7

You can also buy a Sigma jet kit as I have done from eBay. The jets are practically the same as Teikei and they have the same taper and flow rate. See here- http://www.ebay.com.au/itm/Yamaha-TT250-R-TT-250-250R-TTR250-TTR-TT-R250-Carburetor-Carb-Stage-1-3-Jet-Kit-/261334303896?pt=Motorcycles_Parts_Accessories&hash=item3cd8bd0498

You can make adjustments to make it run a little richer or leaner and smooth things out by moving the jet needle clip up or down. Standard setting is the middle...

To assist in removal of the carb, Brian has a great thread for this here- http://www.ttr250.com/Removing_carb/TTR_carb_removal.htm

For carburettor dismantling and installing info see here- http://ttr250.activeboard.com/t55374798/rebuilding-a-ttr250-teikei-y30p-carburettor/

This thread on main nozzle differences is worth reading too- http://ttr250.activeboard.com/t49703293/carburettor-main-nozzle-differences/

This thread may also be worth a look- http://ttr250.activeboard.com/t53318498/air-box-snorkel-modification/

Jarrah

DemonX112 · Newbie

TT-R250M,

Thanks so much for your reply and your welcome :)

You've saved me a whole lot of hair shredding and fear of purchasing the wrong pipe. I've looked over and decided that I'll got with the Q4. I'm not looking for anything too loud, but sounds good when you open up the throttle.

You wouldn't happen to know if dealers and mechanics charge for changing jets in a carby even if they are provided? I'm not very confident in taking the carby off, but am mechanically minded. I was thinking if I get a pipe before I take her in for her first service, then maybe I can get them to switch Jets around while they do the service. Also, what is the general consensus on pod filters? Are they a no go area for TTR-250s?

Again, I thank you very much for your help.

Kimi.

-- Edited by DemonX112 on Tuesday 3rd of December 2013 05:00:19 AM

TT-R250M · Super Guru

No problems Kimi

Nice choice of exhaust, same as mine. It is not too loud when going slow but sounds sweet when you twist the throttle.

Most mechanics charge $60~$80 an hour here, not sure about NZ. At the least, it would take them about 30mins to install the jets and then maybe another 40mins if adjustment of the needle is needed. Hope that gives you some idea?

IMHO- I would steer clear of pod filters! They do not trap the fine dirt particles and are susceptible to sucking in water. An oiled filter is a must if riding offroad!

I would suggest something like this GYT-R one here- http://www.ebay.com.au/itm/YAMAHA-GYTR-DUAL-STAGE-AIR-FILTER-TT-R250-TTR250-TTR-250-1999-2006-/360790123664?pt=Motorcycles_Parts_Accessories&hash=item5400c46490

Or this- http://www.ebay.com.au/itm/Twin-Air-Motorbike-Air-Filter-Yamaha-TTR250-4-Stroke-1994-2013-152604-/190894708984?pt=AU_Motorcycle_Parts_Accessories&hash=item2c723618f8

Air filters are the same in all TTR250 models.

Enjoy!

petenz · Super Guru

I have a GYTR rear pipe with one of Brian's short header pipes... The short header
made the motor rev out a lot quicker...

What part of NZ are you in.... I'm in CHCH....

DemonX112 · Newbie

TT-R250M wrote:
No problems Kimi
Nice choice of exhaust, same as mine. It is not too loud when going slow but sounds sweet when you twist the throttle.
Most mechanics charge $60~$80 an hour here, not sure about NZ. At the least, it would take them about 30mins to install the jets and then maybe another 40mins if adjustment of the needle is needed. Hope that gives you some idea?
IMHO- I would steer clear of pod filters! They do not trap the fine dirt particles and are susceptible to sucking in water. An oiled filter is a must if riding offroad!
I would suggest something like this GYT-R one here- http://www.ebay.com.au/itm/YAMAHA-GYTR-DUAL-STAGE-AIR-FILTER-TT-R250-TTR250-TTR-250-1999-2006-/360790123664?pt=Motorcycles_Parts_Accessories&hash=item5400c46490
Or this- http://www.ebay.com.au/itm/Twin-Air-Motorbike-Air-Filter-Yamaha-TTR250-4-Stroke-1994-2013-152604-/190894708984?pt=AU_Motorcycle_Parts_Accessories&hash=item2c723618f8
Air filters are the same in all TTR250 models.
Enjoy!

Awesome! Thanks for the help! biggrin

I'd been looking at a few pod filters, but now I'm steering clear of them! I think I'll go with the Twin Air filters. I've heard only good things about them.

That does give me a good indication on how much it would cost me to get the jets changed around. So thank you again! You've been a really big help!

petenz wrote:
I have a GYTR rear pipe with one of Brian's short header pipes... The short header
made the motor rev out a lot quicker...

What part of NZ are you in.... I'm in CHCH....

I'm in the N-I. Taranaki to be more specific. We've got a few trail rides around my area that I want to go to.

I have seen the shorty header. But again, it's much too expensive for me at the moment. Especially if I have to beg the Mrs just for a new exhaust... (You should have seen her face when I told her the price of the bike)

I got recommended a GYTR pipe by my local Yamaha dealer, but they could only find the GYTR and the Pro Circuit that would fit, which leads me to believe that their systems are USA based or created.

Thanks again guys!
- Kimi.