Motorcycle specifications YamahaDTR 125 1991 Descendant of a best-seller

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presentation of the DTR 125 1991

the DTR is a direct descendant of the illustrious DTMX, France's most successful motorcycle. This trail bike is equally at home in town or on rocky terrain. Road imperfections are erased with ease, thanks to the machine's generous travel. It's easy to get to grips with, and a high-performance machine that's easy to ride. In its free-running version, the Yam trail bike develops around 22 hp, although the throttle somewhat dampens the mood of the single, which remains conciliatory in fulfilling its role. An all-round performer whose only real drawback is its hefty price tag for a bike of this age.

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Published on 10/12/20
by Greg

Key facts Yamaha DTR 125 (1991) : What you need to know before you buy

Highlights

Getting started
Easy
Passe-partout

Weak points

Bridling

Prices

	Basic version
France	3,811€

Bikers' reviews

of 27 reviews Read reviews

Model sold in 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2005

Replace DTR 125 1990

DTR 125 1990

Replaced by

DTR 125 1992

Performance

Max speed : approximately 110 km/h (68.40 mph)
0-100 km/h acceleration : 13.90 s
Average fuel consumption : 5 liters/100km (0.47 mpg)
Estimated range : 200 km (124 miles)
Calculated range until tank is empty, not verified.

Specifications Yamaha DTR 125 1991

Chassis: Frame : single split cradle in steel; Fuel capacity : 10 liters (2.64 US gallons); Seat height : 885 mm (34.84 in); Length : 2,160 mm (85.04 in); Width : 830 mm (32.68 in); Min height : 1,255 mm (49.41 in); Wheelbase : 1,415 mm (55.71 in); Dry weight : 109 kg (240 lb); Weight when fully loaded : 122 kg (269 lb)

Front axle: Telehydraulic fork Ø 41 mm, Wheel travel : 270 mm (10.63 in); Braking 1 disc Ø 230 mm (9.06 in), single-piston caliper; Front tire : 80 / 90 - 21 → Order this type of tire; Pressure : 1.25 bar

Transmission: 6 stage gearbox; Secondary by chain

Rear axle: Mono-damper, Wheel travel : 260 mm (10.24 in); Braking 1 disc Ø 220 mm (8.66 in), single-piston caliper; Rear tire : 110 / 80 - 18 → Order this type of tire; Pressure : 1.5 bar

Motor: single-cylinder , 2 strokes; 1 carburetor; Cooling system : liquid; 124 cc; 14 ch (13.80 hp) to 7,000 rpm; 1.45 mkg to 7,000 rpm; Power-to-weight ratio : 7.9 kg/ch; Weight / torque ratio : 75.17 kg/mkg; Compression : 6.7 : 1

Practical information

Take care of your motorcycle! Find all the parts and maintenance products you need to keep your bike in top condition.

motor fluid exhaust Chain kit electricity filtration braking Tires

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Used

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Competitors

Kawasaki KMX 125 1991

Honda 125 CRM 1991

Find others On-Off Road of 1991

Compare the DTR 125 to its competitors

Acceleration

Yamaha DTR 125 1991 : 13.9 s

Kawasaki KMX 125 1991 Undisclosed

Honda 125 CRM 1991 Undisclosed

Fuel consumption

Yamaha DTR 125 1991 : 5 liters/100km (0.47 mpg)

Kawasaki KMX 125 1991 : 5.40 liters/100km (0.44 mpg)

Honda 125 CRM 1991 Undisclosed

Range

Yamaha DTR 125 1991 : 200 km (124 miles)

Kawasaki KMX 125 1991 : 172 km (107 miles)

Honda 125 CRM 1991 Undisclosed

Torque

Yamaha DTR 125 1991 : 1.45 mkg

Kawasaki KMX 125 1991 : 1.2 mkg

Honda 125 CRM 1991 : 2 mkg

Power

Yamaha DTR 125 1991 : 14 ch (13.80 hp)

Kawasaki KMX 125 1991 : 13 ch (12.80 hp)

Honda 125 CRM 1991 : 28 ch (27.60 hp)

Power-to-Weight ratio

Yamaha DTR 125 1991 : 7.9 kg/ch

Kawasaki KMX 125 1991 : 7.73 kg/ch

Honda 125 CRM 1991 : 4.28 kg/ch

Torque-to-Weight ratio

Yamaha DTR 125 1991 : 75.17 kg/mkg

Kawasaki KMX 125 1991 : 82.5 kg/mkg

Honda 125 CRM 1991 : 59 kg/mkg

Speed

Yamaha DTR 125 1991 : approximately 110 km/h (68.40 mph)

Kawasaki KMX 125 1991 : approximately 115 km/h (71.50 mph)

Honda 125 CRM 1991 : approximately 135 km/h (83.90 mph)

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Bikers' reviews Leave a review - 27 reviews

Pastrana-30 Model 2003

The best 125 cm3 bike there is. Of course, it's a bit limited here and there, but if you put it on full throttle, it's a lot of fun. 05/23/2025 11:08 Rating : 5/5 Respond to Pastrana-30

Debriding?

fredo7892

Hi Pastrana, what do you think you need to do to reach full on this model? 06/23/2025 15:14 Rating : 4/5 Participate in the conversation

unboxing

mamag

Hi all, I'd like to unlock my 1990 3MB dtr. Can you tell me what to do? 09/18/2025 11:11 Rating : 5/5 Participate in the conversation

electricite:

layou Model 2002

Hi! I would like to know if I can replace my battery with a gel (solar) battery of the same characteristics? Can I have the electrical wiring diagram? Thanks for your help. 05/22/2025 03:20 Rating : 4/5 Respond to layou

Roberto Model 2005

to the challenge of having a modern 125 cm3 4T trail bike with the same weight/power ratio today... 125 cm 3 bikes now weigh an average of 130 kg for less hp, look for the error, progress... 01/09/2025 21:19 Rating : 5/5 Respond to Roberto

Lipire Model 1991

Great model, a little high for a woman, but I can do it anyway. Easily climbs to 130 without steering. Everyone wants to steal it! 06/15/2021 17:06 Rating : 5/5 Respond to Lipire

yoyo Model 1990

hello, I own a dtr 125 2002 with 10300kms .moto very agéable to drive, reliable ;but just the stop light which does not work any more but apart from that nickel:meme if I like also kmx and crm.d'ailleurs before the dtr

i had kmx 125 and rgv 02/19/2021 14:24 Rating : 5/5 Respond to yoyo

angelmann Model 2005

superbike comfort roadholding and riding pleasure very precise braking shame production stopped 02/07/2021 02:12 Rating : 4/5 Respond to angelmann

durites

morgan Model 1997

hello can you help me i own this motorcycle, the hoses have become porous and severed my problem is that i can't find where the hose going from the expansion tank goes can you help me? kind regards 09/19/2019 16:45 Rating : 4/5 Respond to morgan

eric Model 1995

very nice bike, very good performance, very responsive in every gear, top speed of over 120kms as mine is a road model and not a limited series trail model 05/04/2019 00:22 Rating : 5/5 Respond to eric

valeur d'une 125 dtr yamaha

claudius Model 1993

bonjour,je voudrais faire l'acquisition de cette moto elle est de novembre 1993 elle a 7168 km son état est impéccable.jantes et selle couleur mauve,freins a disques av et ar tableau de bord compteur vitesse,compte tour, temoin de température rond. cet peut étre une série limitée
if anyone can give me a value for this bike i would appreciate it

claudius 08/21/2016 16:38 Rating : 4/5 Respond to claudius

dt Model 1997

i own a 125 dtr 2000 5000 kms i acquired it in june 2015 it had 3800 kms like new moreover it is new good model kick start nervous and good point of speed 09/12/2015 15:35 Rating : 4/5 Respond to dt

KKD Model 2001

Powerful motorcycle, but I'd like to see an automatic ignition, a reduction in fuel consumption per 100km, and finally a reduction in the price of the various original parts for a very high consumption machine. 06/18/2015 00:08 Rating : 5/5 Respond to KKD

pot arrow sur Dtr 1999

thierry Model 1999

Hello ,
i have a Dtr 1999 and I would like to know if a pot détente arrow installed on Dtx 2006, goes smoothly on mine ...?
Thanks 05/15/2015 17:05 Rating : 5/5 Respond to thierry

Fuite ? verif pompe a eau ?

nono31 Model 1989

bjr i have a leak liquid cooling, how can we know if it comes from the pump? thank you in advance. 07/17/2014 10:37 Rating : 5/5 Respond to nono31

occasion moto yamaha dt

prix Model 2001

i'd like to buy this motorcycle and get the lowest price 05/14/2014 07:36 Rating : 5/5 Respond to prix

Yffic Narbonne membre de l'équipe Logo en petite résolution du site motoplanete

Motoplanete does not sell any model, neither used. We are an information site.
Please contact a dealer to purchase this model.
Have a nice trip 05/14/2014 11:45 Rating : 5/5 Participate in the conversation

fil gt Model 1999

works very well for its age. 04/23/2014 05:49 Rating : 3/5 Respond to fil gt

125 dtr c'est le top

Philou Model 1997

Very good bike, as comfortable in town as in the country, easy to handle, fairly responsive engine with good acceleration
however, some consumable parts are quite expensive, as the bike is no longer manufactured. I own a Yam 125 dtr from 1989, with a restored engine. 11/19/2013 06:56 Rating : 4/5 Respond to Philou

seb Model 2005

mine dates from 2003, very good bike...responsive (yes, it's a 2-stroke...), already a real size for a 125, great look (I'm an enduro rider); I regret a lack of reliability due to a clogged engine (100% Paris, never peak and yes, it's a 2-stroke...)
That said, this kind of bike makes you want to go for the big cube (which is what I'm doing) 05/21/2008 21:18 Rating : 5/5 Respond to seb

stan Model 2005

voila I have a 2006 dt, I just changed the pot and so the speed is ok the torque is ok but the front fork is really too soft as soon as you're on sand or soft ground it feels like the bike is going to lay down as "GinG GinG" says it's really a fault as I almost only ride enduro.In fact, even the rear suspension is soft, but I'd like to know if the fact that the fork is so soft is due to the oil (which I changed for 15), the spring or the fact that the suspension isn't inverted. Apart from that, it's a really good bike for beginners, but I'm thinking of switching to a YZ or EXC soon 05/21/2007 20:28 Rating : 5/5 Respond to stan

Squal

But if you find car valve springs breaking, put them at the end of the fork instead of the steel ones and use much thicker oils. You'll see that your fork will be much better 01/10/2019 18:43 Rating : 5/5 Participate in the conversation

nouflette Model 2005

i own the latest 125, without doubt the best bike in its categorygood size, perfect handling lacks a bit of top speed but a bit of repproach the kick misses a lot the rev counter and the fork head is too small it looks like a 50
this is the 4th 125 I've owned, and it's all a yam salut nouflette

05/17/2006 07:35 Rating : 5/5 Respond to nouflette

NC Model 2005

undoubtedly the best bike in the 125 class. looks great handling extra lacks a bit of top speed but there are 2 big gaps the kick and especially the rev counter and the fork head too small it looks like a 50. i bought the 3 previous versions and i regret a bit the 2003 version 05/17/2006 07:26 Rating : 5/5 Respond to NC

strabman Model 2005

A great bike, mine's from 2005 and it's awesome! Perfect for going to high school and enduro riding at weekends. To be enjoyed without moderation! 01/14/2006 12:50 Rating : 5/5 Respond to strabman

Grom Model 2005

As the owner of a DT 1998 model, I find it a good machine for the city (Paris), and also for longer trips (300/400 km max). But it's true that the front fork is a bit soft from the start. Personally, I've made the basic engine modifications: YPVS adjustment, pot + airbox mods. and I block my speedometer at 140 on the flat, so passing trucks is fine! My final opinion is that it's a good bike for beginners. 03/12/2005 19:57 Rating : 5/5 Respond to Grom

vivtonight Model 2005

Supermachine!
not much to complain about, except that the front brakes lack bite and power. Personally, I solved the problem by fitting my DT with a Brembo braking kit. In terms of top speed, my machine dates back to July 20001, and I reach 135Km/h (odometer) undisridden. I admit, like "Ging Ging", that the front fork is a little too soft, but this isn't necessarily a drawback, since you can send hard braking without going over the top of the bike (although it does pose a problem for stunt riding, especially stoppies)
But all in all, it's a good machine
Best wishes to all bikers, and happy riding
(P.S: I'm 18) 01/08/2005 22:23 Rating : 5/5 Respond to vivtonight

ptival Model 2005

Well, I've been riding it for about 2 years now (I'm 16), my father hasn't used it for quite a few years, and when I got it, it had 1800km on the clock. Well, I don't have a license and I shouldn't be riding it, but it's a great bike for a weekend in the woods. It's true that the front fork lacks hardness and the braking leaves a bit to be desired, especially for the front. And with good tires, a good chain kit, a modified YVPS, new valves and a complete pot, there's nothing more to say, even for enduro riding, and yeah, I swear =), bye ;) 12/31/2004 16:46 Rating : 5/5 Respond to ptival

zuyg Model 2005

cadre pa assez développer 12/23/2004 14:54 Rating : 5/5 Respond to zuyg

GinG GinG Model 2005

i'm the proud owner of a Yamaha DT (thanks dad!!!mdr)I've had my big cube license since feb.it's a new model bought in 2001.i've had the opportunity to ride this bike quite a bit, as i've done enduro before riding on the road.i'd like to know if it's my bike, or if all DTs suffer from a blurred front end!!!! In enduro, as soon as you take a bend, you get the impression that the front end is going to lie down, and I find that very annoying! G a friend who's been riding since he was 5, he's got a kdx. he's tried my bike twice, and he got the same impression, C BIZZARE... I'm going to continue to ride my bike downhill, criticizing the fork, which is, really, too soft. as soon as you scratch the lever, the bike settles, and that's pretty annoying! "He's really criticizing his bike," some people must be thinking! Well, yes, but you've got to be cruel to be kind! Once you're used to it, you can still enjoy it, as proven by the fact that G reaches the end of the (original) tires, so you can attack a little, but it soon admits its limits (the brakes aren't gégé...another little layer!) The DT is more of a bike for getting from point A to point B without any problems. As far as travel is concerned, this summer I did Lyon-Marseille, and Lyon-Orléan, and it did very well, although my cruising speed was 120km/h, so it lacked power for certain overtaking maneuvers, once 110km/h had been reached (well, I grant you, normally you drive at 90 on departmental roads, but hey...).apart from that, I ride the DT to school every day, and it's just right for the city. It's a trail, so it's easy to handle, and the power is more than enough for this environment, where cars go right and left as they please, without a care in the world around them... For those who want to do more enduro than road riding, prefer a kdx, otherwise, for city dwellers, it'll do just fine. 12/23/2004 14:51 Rating : 5/5 Respond to GinG GinG

the tarmo Model 2005

a superb, torquey and slightly powerful burner. g u a problem with the servomotor that controls the exhaust valve, and it seriously penalizes me at low revs. 12/23/2004 14:39 Rating : 5/5 Respond to the tarmo

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FAQ Your frequently asked questions about the DTR 125 1991

What is the power of the DTR 125 1991?: The DTR 125 1991 develops a power of 14 ch (13.80 hp)
What is the torque of the DTR 125 1991?: The maximum torque of the DTR 125 1991 is 1.45 mkg to 7,000 rpm.
What is the maximum speed of the DTR 125 1991?: The DTR 125 1991 is capable of reaching a top speed of approximately 110 km/h (68.40 mph) on the track.
What is the weight of the DTR 125 1991?: The DTR 125 1991 has a a dry weight of 109 kg (240 lb), a weight when fully loaded of 122 kg (269 lb).
What is the fuel consumption of the DTR 125 1991?: Average fuel consumption is estimated at 5 l/100km (0.47 mpg) according to the WMTC cycle.
QWhat is the seat height of the DTR 125 1991?: To ensure good accessibility, the DTR 125 1991 offers a minimum seat height of 885 mm (34.84 in).
What is the price of the DTR 125 1991?: The price of the DTR 125 1991 is 3,811€ in France

Motorcycle specifications YamahaDTR 125 1991 Descendant of a best-seller

presentation of the DTR 125 1991

Key facts Yamaha DTR 125 (1991) : What you need to know before you buy

Highlights

Weak points

Prices

Bikers' reviews

Model sold in 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2005

Replace DTR 125 1990

Replaced by

Performance

Specifications Yamaha DTR 125 1991

Gallery

Models

Used

Competitors

Compare the DTR 125 to its competitors

Acceleration

Fuel consumption

Range

Torque

Power

Power-to-Weight ratio

Torque-to-Weight ratio

Speed

Bikers' reviews Leave a review - 27 reviews

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FAQ Your frequently asked questions about the DTR 125 1991

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