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

Rtw1day · Rtw1day

how lean to the TTRs run after installing an exhaust & airbox mod? I took the Bike for a quick ride & it didn’t sound like it was running lean, not sure if I’ll get a bigger jet insulation done before a ride next weeken, I wonder how hot they do run when they are in the leaner side….any thoughts?

Elephant · Elephant

Is it possible to fit an oil pressure switch to the TTR engine? Would be good to know if the oil pump is failing, before the engine melts down.

TTRfan · TTRfan

I have a 350 kit in my sticky mitts now and am really grateful to Simon (mossproof) who did all the hard work on getting the barrels cast and machined, the special pistons and gaskets made and building and testing the very first TTR350 in the world - cheers mate! See here. I have a good starting point for t...

Spyrious · Spyrious

Hello.I ordered some parts including handlebar risers and the longer clutch cable.The only thing i havent found out is if the stock brake line is still ok with the risers.Do i have to route it different?Thanks

Rtw1day · Rtw1day

Has anyone done a conversion to fit a WR dash to a TTR? I purchased a dash last year & mounted it, but haven’t gotten around to figuring out how to get it working any ideas? Does the WR run a pickup via a disk mountEd magnet or run a digital pickup in a housing similar to the analog cable one? see below...

Rtw1day · Rtw1day

Any ideas on Spring rate calculations? I’m prob just under 75kg with full gear, I’m running a 20L tank, & max 20kg luggage with tools / spares. I’m going to work on 100kg - 105kg rider weigh, what rates for the springs you think are the ideal rate? cheers

diggermanbob · diggermanbob

I’m thinking of fitting heated grips on my ttr , is the electrical system up to running them , I have them on my other bikes without any issues,

TTRfan · TTRfan

My brother-in-law's pilot bulb blew so he decided to replace it with an LED bulb. Looking on eBay, there was a good deal for two so we are both now using the LEDs A straight replacement - same fitting. The lights are now a clear bright white (much brighter than the photo shows!) rather than a half-hearte...

TTRfan · TTRfan

Mike McCann has made some great videos on suspension and performance mods for the TTR including the exhaust and front forks. See his YouTube channel here His latest videos show the progress on a 350cc conversion using the Totally TTRs big-bore kit. First of the series is here: [video=https://yout...

mossproof · mossproof

I have just fitted a set of drop-in cartridge emulators, springs and a new rear shock from Cogent Dynamics in the US to an XT250 Serow (sorry to get your hopes up with that first sentence!) The front end was dramatically improved (ride quality and dirt road cornering feel) so I have been trying to find in...

Huon · Huon

I’m new to the site and not sure entirely if I’m doing this right? I recently bought a ttr250, and need a metal bash plate for it, does anyone know one that would fit and work nicely?

mossproof · mossproof

Anyone know what size the rear shock preload thread is? I'm considering an XTrig preload adjuster and I don't think they list one for the TTR but if I can find another bike with the same thread I can start the hunt on ebay! (This is just because I'm too idle to strip things down to measure my shock...) https...

TerryK · TerryK

Photos of the Staintune baffle, this is the quiet baffle with the mesh

TTRfan · TTRfan

Robin Webb's modified TTR250 16’’ rear and 18’’ front

TTRfan · TTRfan

Just seen this on FaceBook:A lot of people have been asking about the TTR forks, here they are in all their glory! Today we are going to let you know how to set them up..All we did back in the days on the TTR forks to win championships with Geoff Ballard, Jess Gardiner and Ben Burrell..Fork oil 7.5wt at 125...

Bran · Bran

My mission for this year is to sort the crusty frame on my OE, I'm going to powder coat but I'm slightly unusual in actually liking the purple rims/bars. I don't think black will work with purple & white so was thinking of going for white. I've seen the great photos of other projects like the red/whit...

Rtw1day · Rtw1day

I find the stock brakes terrible compared to what I’m used to whst are upgrades anyone has done? i going to be doing a yz250f fork upgrade later on in the year & going to run yz250f full brakes with the larger gytr disk, has anyone put yz250f brakes on stock ttr forks? & any options for rear upgrad...

olarf · olarf

Hello Board Members, our 1999 TT-R250 has a WR250f fork mounted. This conversion seems to work great, but the bike is to be lowered and therefore I would like to know how high it is in the front at the top of the steering head and in the middle of the handlebars with an original fork. That would help me to k...

Rtw1day · Rtw1day

Any one know where a GYTR exhaust mite be available? Or any decent exhaust as stock is very low currently on everything cheers!

JCW · JCW

I am very pleased with my 02 street legal TTR250.....with one exception. The forks are way too soft. The front end dives when you touch the front brake. I was told to run 4psi and that is what I am running. Can I buy spacers to make the springs stiffer, or buy stiffer springs? Thanks!

Blue wombat · Blue wombat

Hi all, Had a look at totallyttrs for the shortly header but they are unavailable. Does anyone know of somewhere else I can get one? Thanks in advance

Kaos · Kaos

I've always wanted a higher seat on the TTR. Although the original seat is lower and easier to put a foot down in technical situations, I feel a bit cramped and then tend to cramp in the legs during and after long rides on the TTR250. This doesn't happen on modern bikes I also ride. Anyway new seat is on a...

Christos · Christos

Hello all, My digital speedometer has seized. I ordered another one from AliExpress. Does anyone have the wiring diagram for the original?

PurpleWheels · PurpleWheels

I wanted to see if I could reduce the slope towards the tank on my Raid seat, while also getting some added padding and making it a little higher in the process. I'm 6 foot 3 (192 cm) and feel a bit cramped on the bike, especially as I keep sliding forward and down towards the tank. I have never liked a forward...

TerryK · TerryK

As the title suggests I have increased the power to weight ratio on the TTR, perhaps a bend of the truth a little. I've been really busy putting our house on the market, moving stuff & cleaning, painting etc. Well the house sold in a week & for 50g above what we wanted with the bonus I dropped from...

Markvan · Markvan

Got a used GYTR tailpipe. Are some tailpipes just a slip on with no clamp needed ? Looks as though there never as been any clamp. Its a nice snug fit with extra thick pipe on the tailpipe where it joins the header pipe. All mounts line up good. Is it as the word goes. ( A slip on ). -- Edited by Markvan on Wed...

Horizonti · Horizonti

I really like my 2005 TTR250, it was the one bike I have always regretted not buying new when I had the chance. I bought this one 3 years ago having run a TT600RE for quite a few years, I ran them both for while whilst deciding which one to keep. For me, the 250 was the clear winner, lighter, 6 gears, better on t...

dlee22 · dlee22

Hi there, Has anyone found a source for replacement springs with alternative spring rates or succesfully revalved the forks? I have read that the internals from the wr250r are a good upgrade? -- Edited by dlee22 on Tuesday 13th of July 2021 12:14:32 PM

pjkr199 · pjkr199

Hello everyone. Finally I found a bike I wanted. It's arriving in few days. Things I will need to sort first is mirrors - the bike don't have any. As my budget is tight, Double Take is not an option, and perhaps not a necessity for now - mainly it will be thumping on paved roads. Anyone had good success w...

dlee22 · dlee22

Hi all, not really a modification but fairly rare for a ttr250... My ttr250 came with a decompression lever etc but i removed it due to the fact it leaked. I would like to use my kick starter more often however its typically stated on here that it does not turn the engine over quick enough to be really eff...

Topic		Started By	Replies	Views	Last Post
	Riding without tuning the carby after exhaust install (Preview) how lean to the TTRs run after installing an exhaust & airbox mod? I took the Bike for a quick ride & it didn’t sound like it was running lean, not sure if I’ll get a bigger jet insulation done before a ride next weeken, I wonder how hot they do run when they are in the leaner side….any thoughts?	Rtw1day	2	635	Oct 29, 2023 by Rtw1day
	How to fit an oil pressure switch? (Preview) Is it possible to fit an oil pressure switch to the TTR engine? Would be good to know if the oil pump is failing, before the engine melts down.	Elephant	1	604	Oct 25, 2023 by TTRfan
	Brian's 350 build ( 1 2 ) (Preview) I have a 350 kit in my sticky mitts now and am really grateful to Simon (mossproof) who did all the hard work on getting the barrels cast and machined, the special pistons and gaskets made and building and testing the very first TTR350 in the world - cheers mate! See here. I have a good starting point for t...	TTRfan	78	6626	Jul 13, 2023 by UncleFZ
	Handlebar risers and brake line handlebar risers brake line (Preview) Hello.I ordered some parts including handlebar risers and the longer clutch cable.The only thing i havent found out is if the stock brake line is still ok with the risers.Do i have to route it different?Thanks	Spyrious	8	1536	Mar 28, 2023 by tom13
	WR digital speedo on a TTR (Preview) Has anyone done a conversion to fit a WR dash to a TTR? I purchased a dash last year & mounted it, but haven’t gotten around to figuring out how to get it working any ideas? Does the WR run a pickup via a disk mountEd magnet or run a digital pickup in a housing similar to the analog cable one? see below...	Rtw1day	5	873	Mar 23, 2023 by michel250TTR
	Spring rate calculator (Preview) Any ideas on Spring rate calculations? I’m prob just under 75kg with full gear, I’m running a 20L tank, & max 20kg luggage with tools / spares. I’m going to work on 100kg - 105kg rider weigh, what rates for the springs you think are the ideal rate? cheers	Rtw1day	1	629	Mar 5, 2023 by Jeff B
	Heated grips (Preview) I’m thinking of fitting heated grips on my ttr , is the electrical system up to running them , I have them on my other bikes without any issues,	diggermanbob	4	848	Dec 25, 2022 by mossproof
	Replacing standard headlight pilot bulb with an LED (Preview) My brother-in-law's pilot bulb blew so he decided to replace it with an LED bulb. Looking on eBay, there was a good deal for two so we are both now using the LEDs A straight replacement - same fitting. The lights are now a clear bright white (much brighter than the photo shows!) rather than a half-hearte...	TTRfan	3	826	Dec 19, 2022 by ttr steve
	Mike McCann's TTR mods on YouTube (Preview) Mike McCann has made some great videos on suspension and performance mods for the TTR including the exhaust and front forks. See his YouTube channel here His latest videos show the progress on a 350cc conversion using the Totally TTRs big-bore kit. First of the series is here: [video=https://yout...	TTRfan	6	1027	Oct 22, 2022 by mossproof
	Cartridge emulators for TTR forks - questions (Preview) I have just fitted a set of drop-in cartridge emulators, springs and a new rear shock from Cogent Dynamics in the US to an XT250 Serow (sorry to get your hopes up with that first sentence!) The front end was dramatically improved (ride quality and dirt road cornering feel) so I have been trying to find in...	mossproof	0	759	Sep 11, 2022 by mossproof
	Bash Plate (Preview) I’m new to the site and not sure entirely if I’m doing this right? I recently bought a ttr250, and need a metal bash plate for it, does anyone know one that would fit and work nicely?	Huon	3	857	Aug 25, 2022 by tripodtiger
	Rear shock preload adjusters (Preview) Anyone know what size the rear shock preload thread is? I'm considering an XTrig preload adjuster and I don't think they list one for the TTR but if I can find another bike with the same thread I can start the hunt on ebay! (This is just because I'm too idle to strip things down to measure my shock...) https...	mossproof	11	5130	Aug 18, 2022 by mossproof
	Staintune muffler baffle Att. Booki (Preview) Photos of the Staintune baffle, this is the quiet baffle with the mesh	TerryK	9	879	Aug 8, 2022 by TerryK
	The TW250 that Yamaha never made never made! (Preview) Robin Webb's modified TTR250 16’’ rear and 18’’ front	TTRfan	0	732	Jun 4, 2022 by TTRfan
	Geoff Ballard's advice on setting up standard TTR250 forks for racing (Preview) Just seen this on FaceBook:A lot of people have been asking about the TTR forks, here they are in all their glory! Today we are going to let you know how to set them up..All we did back in the days on the TTR forks to win championships with Geoff Ballard, Jess Gardiner and Ben Burrell..Fork oil 7.5wt at 125...	TTRfan	4	1398	Mar 20, 2022 by impulsive
	Anyone got a picture of an OE or Raid with a white frame? (Preview) My mission for this year is to sort the crusty frame on my OE, I'm going to powder coat but I'm slightly unusual in actually liking the purple rims/bars. I don't think black will work with purple & white so was thinking of going for white. I've seen the great photos of other projects like the red/whit...	Bran	2	751	Feb 15, 2022 by Bran
	Brake upgrades (Preview) I find the stock brakes terrible compared to what I’m used to whst are upgrades anyone has done? i going to be doing a yz250f fork upgrade later on in the year & going to run yz250f full brakes with the larger gytr disk, has anyone put yz250f brakes on stock ttr forks? & any options for rear upgrad...	Rtw1day	12	1252	Feb 9, 2022 by TbirdX
	I would need a fork length measurement fork length ttr250 wr250f (Preview) Hello Board Members, our 1999 TT-R250 has a WR250f fork mounted. This conversion seems to work great, but the bike is to be lowered and therefore I would like to know how high it is in the front at the top of the steering head and in the middle of the handlebars with an original fork. That would help me to k...	olarf	10	1280	Feb 7, 2022 by olarf
	GYTR exhaust availability (Preview) Any one know where a GYTR exhaust mite be available? Or any decent exhaust as stock is very low currently on everything cheers!	Rtw1day	5	1081	Jan 3, 2022 by KMAN
	Best way to make forks stiffer??? (Preview) I am very pleased with my 02 street legal TTR250.....with one exception. The forks are way too soft. The front end dives when you touch the front brake. I was told to run 4psi and that is what I am running. Can I buy spacers to make the springs stiffer, or buy stiffer springs? Thanks!	JCW	9	2710	Nov 20, 2021 by dlee22
	Where to get a shorty header? Shorty header (Preview) Hi all, Had a look at totallyttrs for the shortly header but they are unavailable. Does anyone know of somewhere else I can get one? Thanks in advance	Blue wombat	2	690	Oct 29, 2021 by ttr steve
	Higher seat forthe TTR250 (Preview) I've always wanted a higher seat on the TTR. Although the original seat is lower and easier to put a foot down in technical situations, I feel a bit cramped and then tend to cramp in the legs during and after long rides on the TTR250. This doesn't happen on modern bikes I also ride. Anyway new seat is on a...	Kaos	4	717	Oct 16, 2021 by Kaos
	Replacement Speedo for digital Speedo version (Preview) Hello all, My digital speedometer has seized. I ordered another one from AliExpress. Does anyone have the wiring diagram for the original?	Christos	24	1725	Sep 11, 2021 by Christos
	Comfort seat for Raid (Preview) I wanted to see if I could reduce the slope towards the tank on my Raid seat, while also getting some added padding and making it a little higher in the process. I'm 6 foot 3 (192 cm) and feel a bit cramped on the bike, especially as I keep sliding forward and down towards the tank. I have never liked a forward...	PurpleWheels	5	1036	Aug 22, 2021 by Jeff B
	Increased the power to weight on the TTR (Preview) As the title suggests I have increased the power to weight ratio on the TTR, perhaps a bend of the truth a little. I've been really busy putting our house on the market, moving stuff & cleaning, painting etc. Well the house sold in a week & for 50g above what we wanted with the bonus I dropped from...	TerryK	12	1217	Aug 4, 2021 by TerryK
	GYTR tailpipe to header pipe clamp ? (Preview) Got a used GYTR tailpipe. Are some tailpipes just a slip on with no clamp needed ? Looks as though there never as been any clamp. Its a nice snug fit with extra thick pipe on the tailpipe where it joins the header pipe. All mounts line up good. Is it as the word goes. ( A slip on ). -- Edited by Markvan on Wed...	Markvan	3	1337	Aug 4, 2021 by Rossyboys
	TTR250 aftermarket exhaust review, Pro Circuit T4. (Preview) I really like my 2005 TTR250, it was the one bike I have always regretted not buying new when I had the chance. I bought this one 3 years ago having run a TT600RE for quite a few years, I ran them both for while whilst deciding which one to keep. For me, the 250 was the clear winner, lighter, 6 gears, better on t...	Horizonti	4	1670	Jul 19, 2021 by Horizonti
	Suspension - Upgrades (Preview) Hi there, Has anyone found a source for replacement springs with alternative spring rates or succesfully revalved the forks? I have read that the internals from the wr250r are a good upgrade? -- Edited by dlee22 on Tuesday 13th of July 2021 12:14:32 PM	dlee22	3	871	Jul 17, 2021 by ttboof
	Raid Windshield and mirrors (Preview) Hello everyone. Finally I found a bike I wanted. It's arriving in few days. Things I will need to sort first is mirrors - the bike don't have any. As my budget is tight, Double Take is not an option, and perhaps not a necessity for now - mainly it will be thumping on paved roads. Anyone had good success w...	pjkr199	10	1563	Jul 1, 2021 by davidraider412
	Decompression lever information (Preview) Hi all, not really a modification but fairly rare for a ttr250... My ttr250 came with a decompression lever etc but i removed it due to the fact it leaked. I would like to use my kick starter more often however its typically stated on here that it does not turn the engine over quick enough to be really eff...	dlee22	1	782	Jun 30, 2021 by ttboof
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