The Yamaha DT175

[Ed. Note: This Two-Wheel Tuesday post is brought to you courtesy of Tanshanomi and his big bike brain]

“All you’ve got to do is stand, and fire three rounds a minute. Now, you and I know you can fire three rounds a minute…but can you stand?” — Richard Sharpe, Sharpe’s Eagle (1993)

That stirring challenge (posed to new recruits by a grizzled veteran of the Napoleonic wars) is from a fictitious pre-battle movie monologue. But it perfectly describes the remarkable history of the real-life Yamaha DT175. The DT175, moreso than perhaps any other motorcycle, has proven its ability to stand. Individually, DT175s have survived ridiculous amounts of abuse at the hands of third-world peasants and squirrelly teen novices. Overloaded, poorly maintained, smashed and corroded DT175s are at this moment buzzing all over our planet. Collectively, the DT175 has survived in the marketplace for more than three decades with very few changes, like a two-wheel Morgan.
The DT175 was born in 1974, when the three-year-old, piston-port 175cc Yamaha CT3 Enduro was redesigned with reed-valve induction. In 1978, the frame was revised with a monoshock on the back similar to the YZ motocross line. The swingarm was replaced with a square-tube design two years later.
Americans may be forgiven for not being familiar with the DT175’s awesome longevity. EPA regulations banished it from our shores after 1981. But throughout the world, the DT175 has soldiered on, becoming a much-loved icon in the process. It was updated a bit here and there; a YICS intake plenum chamber (or “boost bottle”) was added in the mid ’80s, and a decent front disc replaced the feeble front drum in 1999. But overall, the the 2010 DT175 is remarkably similar to the ones that sat in U.S. dealer’s showrooms so many years ago. The larger DT250 has been out of production for years and the smaller DT125 has been replaced with a modern, liquid-cooled design. The DT175 remains.
The DT175 has always been a spunky, eager machine. It cannot handle supercross whoops or speed though the woods down a gnarled enduro single-track. But it has proven itself perfect for navigating fire breaks, Jeep trails, and untold thousands of potholed city streets, unpaved alleys and rural dirt roads. The entertaining but unintimidating power is just perfect for schoolboys learning the joys of two-wheeled freedom. Yet it is the bike’s ruggedness that set it apart.
At this very moment, DT175s are churning through deep African desert sand, chugging through muddy Scottish bogs, transporting doctors and preachers on solitary journeys to nearly inaccessible jungle tribes, criss-crossing Asian metropolises loaded down with hundreds of pounds of marketable goods, and ferrying entire families of three, four or more to neighboring villages.
When people mention legendary vehicles, they usually think first of the VW Beetle and Model T, then perhaps the Citroën 2CV., If bikes come up, they’ll name the Honda Cub. Rarely will they mention the DT175. That’s a shame, because the CT175 has proven, above all else, that it can stand.
[Thanks Tanshanomi! Hoons, be sure to visit his site for more two-wheel wonders. Tanshanomi.com]

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32 responses to “The Yamaha DT175”

  1. BЯдΖǐL-ЯЄРΘЯΤЄЯ Avatar
    BЯдΖǐL-ЯЄРΘЯΤЄЯ

    In Brazil they had the name DT 180, very good fun to ride, light as a bicycle.

    1. Tanshanomi Avatar

      An off-road (no lights) version of the 180cc engine was sold in the US as the RT180.
      The DT175 motor is also the basis for the 200cc Blaster ATV.

      1. BЯдΖǐL-ЯЄРΘЯΤЄЯ Avatar
        BЯдΖǐL-ЯЄРΘЯΤЄЯ

        After the DT 180 we had the DT 200 and DT 200 R, both were watercooled and had the YPVS exhaust valve. I thnk the Blaster engine is very similar

      2. mark Avatar
        mark

        Can I convert my dt175 to a 200 by buyng the cylinder, head an piston of the blaster?

        1. Peter Tanshanomi Avatar
          Peter Tanshanomi

          No, they are not interchangeable.

        2. Joe Bar Avatar
          Joe Bar

          I put an RT180 engine, and exhaust in my 1979 DT175 chassis. I also transplanted the forks with disc brake, swingarm, and wheels. They all bolt on.

  2. BrianTheHoon Avatar

    My first street-legal bike was a Yamaha XT550. Compared to the moto-x bikes I grew up on, it was a pig off road (although I could still go places four-wheelers couldn't). I freaking loved that bike, though. It was absolutely bullet proof, started right up every time, and never failed me. I had three other friends with dual-purpose bikes and we used to road trip down the Baja peninsula to go surfing. We'd occasionally freak the locals out when we came rolling into town in full armor, surf board racks and big-bore singles thumping away. Of all the bikes I've had, I miss that one the most.
    <img src="http://www.autoevolution.com/images/moto_gallery/medium/YAMAHAXT550-medium-772_1.jpg"&gt;

  3. engineerd Avatar

    Nice tribute to a little known bike on our shores. I know I was pretty unaware of these, though I remember a buddy that had a late '70s model that we goofed around on in his parents back yard. I wonder if the neighbors have forgiven us yet.

    1. Tanshanomi Avatar

      Thanks.

      1. BЯдΖǐL-ЯЄРΘЯΤЄЯ Avatar
        BЯдΖǐL-ЯЄРΘЯΤЄЯ

        Great blog, I share some love for little 2-stroke screamers too.

  4. CptSevere Avatar

    I would love to have one of these to putt around town, and also to get out into the local hills and the near desert just to goof around. I'd put some big sprocket on the back, and climb all over the place.
    You know, it's a shame that so many areas of the West are no longer open to offroad vehicle access. Used to be, those same areas were only accessible by a real Jeep, mounted on a horse, on foot, or on a simple trailbike like this. That didn't seem to bother anybody because all those means of access don't appeal to the general public. Kept the riffraff out, nothing got destroyed, things were fine. All that changed when Honda came out with the infernal ATC, the three-wheeled terror that opened off-road riding to the general public, then the execrable quad, which enabled even fat people to get to places that formerly were off-limits to the lazy, timid, and undeserving. Said places got trashed by the general public, because now they can sit on something, point it uphill, and drive it up there without any skill or hardship, leaving wider trails, erosion ruts, beercans and damage in their wake. Now certain groups want everything off-pavement closed to everybody not on foot. If these nice little bikes were all that were available, the situation would be much different and the back-country would be more accessible and in nicer shape. These tread lighter, and being two-wheeled means that a lot of people won't ride them.
    End Rant.

    1. BrianTheHoon Avatar

      I can't "thumbs-up" you enough for that one. Bravo from a longtime two-wheel off roader who does not at all heart quads.

  5. theeastbaykid Avatar
    theeastbaykid

    I hope these bike retrospectives become a regular feature–it's bikes like the DT175 that prove complexity, speed, and image are not necessary ingredients of practicality and fun. If more people rode small-bore bikes as regular transportation, the world would be a better place (although probably four-stroke versions for the 21st century….)

  6. FTGDHoonEdition Avatar

    Nice article, I personally never owned a trail/off-road bike (I am more a sport racer, 600cc kind of guy) but I rode around in a couple of similar bikes on a friend's farm and have always wanted to own one.

    1. DerangedStoat Avatar
      DerangedStoat

      A number of the Aussie GP riders, notably Stoner and Vermulan, are well known for having started riding by racing in the dirt as well. It's often quoted as the reason why they are relatively fast in the wet when compared to the rest of the field.

  7. learndrums Avatar

    Hello, I read all your writings, keep them coming.

  8. rioleoaz Avatar

    Wow! I was 15 when my dad bought me a brand new 77 dt100 I still remember riding it, then I saw the 78 dt175 at the showroom just like the blue one above and had to have it… we were not rich, I am just a lucky kid. I loved everything about that bike and just by looking at that picture I feel like 16 again. I sadly had to leave my homeland and the bike behind and got a 79 xt500 as soon as I saved up the cash. Now I’ll be looking for a dt175 again.

  9. jasa seo Avatar

    yamaha is the best among other motorcycle,most i like is the safety riding of yamaha and spareparts is easily find

  10. Evilnut Avatar
    Evilnut

    I just found this article, thank so much for writing it. I owned a 1978 Blue DT175 exactly like the one in the first pic at the top of this page. My first "big displacement" motorcycle. I got my MC drivers license on it & it was my only transport for almost 3 years. I put 43000 miles on that bike & pounded it hard every weekend off road & on long road trips. Rode it from Seattle to northern California 2 times with a bunch of my buddies on bikes. I was the smallest one for sure & could not always keep up, but I had way more fun getting there! It was a great bike that was just right for just about anything. My commute for 2+ years was about 70 miles round trip with over half on the freeway, that little thing would just hum along at about 6500 rpm. Maybe that is why I own a 2008 KLR650 now. Similar situations, virtually unchanged for over 20 years, the KLR just gets it done without wiz bang technology & keeps it simple! Thanks again for writing, I need to go start my chainsaw as i really miss the smell of a good 2 stroke engine about right now…..

  11. juluis Avatar
    juluis

    Very nice article you got there. I have a Yamaha DT 125 here in my country (Philippines). We seldom have 175s here for reasons I don't know. I have this motorcycle for 13 years already and I haven't had any major repair on this little bike of mine. It's very durable and tough, I guess that's the real meaning of DT. It's my main means of transportation. I don't have any big problem with this bike whatsoever. There are some better looking bikes than my DT125 but they don't last like my bike does…

    1. McReady Avatar
      McReady

      DT175s were huge in australia I owned 3 a 78 , an 87 and a 90 .They disapeared from dealer show rooms in about 2007 .I rode mine on road ,trails but mostly sheep mustering , light and nimble and when you dropped a tooth or two on the front cog and fitted a decent nobby became excelent performers in rough country – very popular amoung young farmers and stockmen. Sadly most seem to have been used / abused to the point of destruction and now exist as a pile of junk in the corners of numerous farm sheds.

  12. Jenna Avatar
    Jenna

    can anyone tell me what the name of the blue is in that pic of the blue dt175??? I need to repaint my tank and the original blue would be best

  13. Paul Avatar
    Paul

    Still a strong folowing here in the UK, I have had one from new, she's a 1979 model. Thay have a very strong following in France too in the 125 size. It's sad they didnt linger so long in the states. I occasionally get to talk and help out with stateside and Canadian owners on the YOC forum http://www.yamahaclub.com/forums/

  14. chris Avatar
    chris

    its only sad that america has a conspiracy against small motorcycles

  15. Jesse Avatar
    Jesse

    I have a 1975 Yamaha dt175b that I have been restoring for 3 years now. I was a motocross bike brand new. After 5 races it was wrecked no real damage to speak of. I bought it for $200. The owner said it had not ran in 15 years. I got it to start in less then 15 min. The only thing i need is a kick start leaver and the auto lube pump and it is complete. As is I still ride it around here in good old Pennsylvania. I have had street bikes before but aways loved to ride my 175.

  16. Frank Avatar
    Frank

    That DT175 from 1978 is great! My father bought one new and its the bike I got licence on. A great step forward from the XL100 I was riding. It appears Yamaha had a recall about the plug from the factory was to hot, we never got that recall, but its stated in a Clymer manual. After many years, like 15 years of putting that same plug # in the DT, it finally burned a hole through the piston. The bike sat for another 15 yrs in a barn. Finally I decided to take a look at the motor, and got a new piston, bearings and seals. It started up and now its ridden all the time!

  17. Nic Venter Avatar
    Nic Venter

    They are still available in South Africa brand new..R35000

  18. Bill Avatar
    Bill

    Got a purple 1973 LT3 100cc enduro as my first motorcycle for Christmas in 1973 at age 13. Great bike – had a blast riding local trails then sold it to buy a car in 1976. Missed having a motorcycle so bought a new blue 1978 DT175 for commuting and trail riding. A good bike with a great suspension for the time and type bike but never ran as good as a friend's 1979 DT175. I believe some off-brand injector oil that my local Yamaha dealer said "works as good as Yamalube" led to bore scoring. Never used cheap oil in anything since.
    Now at age 55 I just picked up a very clean, low mile 2008 XT250 that I will do some basic maintenance on and then take for a spin this weekend. Great to be back in the Yamaha fold.
    I am one of those folks who either owns a motorcycle or wished I had one. Once you ride it stays in the blood.

  19. BSA600 Avatar
    BSA600

    Here in the UK, we didn’t have the version shown above, ours had the LC engine, we did however, have all of the other models, from AT’s, CT’s through to DT’s, but not the one pictured. I’ve got an RT1 and a CT3, great bikes.

  20. Kevin Lyons Avatar
    Kevin Lyons

    Just bought 1970 and 1975 yamaha 175 enduros ,the 1970 was my first bike shame so many out there got wasted,they are great bikes can’t wait to ride these again ,since I’m 65 this is the perfect bike for me to hit the trails,shame parts are so expensive, but there worth it,never giving these up again

  21. Richard palmer Avatar
    Richard palmer

    Mine is a 2004 12volt disc brake model. 30,000 km runs really strong and very reliable. Still looks like new!

  22. Mike Castillo Avatar
    Mike Castillo

    I live here in the Tierras Altas of Chiriqui, Panama where the DT’s are still sold and wildly popular. Having grown up on 2 strokes in SoCal in the 60’s and 70’S I flipped when I saw an old rat DT at the corner store in the pueblo. I quickly started looking and found a 2010 model and bought it for 2k. Two weeks later I bought a brand new one at the dealer for $3500 in the case the scam-demic made scooting around the only option. The 2010 is for beach and mud. The 2020 is for dry days on our gorgeous mountain roads. Simple dimple kick start, CDI, reed valve carbureted – easy to work on – and parts are everywhere. I’m pushing 70 now, but riding them brings me back to the days of DT1’s, Hodaka’s, CZ’s and other great 2 strokes we had in the family. I have both of mine tuned to electric motor smoothness. And at 235 pounds full fuel and oil – they are by far the best power to weight Dual Sport – period.