Yamaha TT R125LW/E
- Production years
- 2004–2021
- Brand
- Yamaha
Choose model year

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Selected year: 2021
Technical specifications
- Engine capacity
- 124 cm³
- Power
- 15 hp (11 kW)
- Wet weight
- 90 kg
- Seat height
- 805 mm
Overview
The 2021 Yamaha TT R125LW/E is an enduro bike in the TT family, produced from 2004 to 2021. Its air-cooled, 124.0 cm³ four-stroke single makes 15 hp (11 kW); wet weight is 90 kg, or 81 kg dry.
The 805 mm seat height puts the rider at a raised perch, while 295 mm of ground clearance and 180 mm front and 168 mm rear wheel travel suit uneven terrain. The 6.00 L tank limits how much fuel it carries, and electric and kick starting provide two ways to get the engine running.
Specifications
Engine
Engine
- Bore x stroke
- 54.0 x 54.0 mm
- Engine capacity
- 124 cm³
- Compression ratio
- 10.0:1
- Cooling system
- Air
- Engine type
- Single, four-stroke
- Fuel system
- Carburettor
- Ignition
- CDI
- Lubrication system
- Wet Sump
- Oil capacity
- 1.2 L
- Starting
- Electric & kick
- Valves per cylinder
- 2
Performance and transmission
Performance and transmission
- Power
- 15 hp (11 kW)
- Power weight ratio
- 0.1852 HP/kg (dry)
- Clutch
- Multiplate wet clutch
- Final drive
- Chain
- Gearbox
- Manual 5-speed
- Transmission type
- Manual
Dimensions and weight
Dimensions and weight
- Dry weight
- 81 kg
- Fuel capacity
- 6 L
- Ground clearance
- 295 mm
- Overall height
- 1,085 mm
- Overall length
- 1,885 mm
- Overall width
- 795 mm
- Seat height
- 805 mm
- Wet weight
- 90 kg
- Wheelbase
- 1,270 mm
Chassis and suspension
Chassis and suspension
- Frame
- Diamond
- Front suspension
- Telescopic
- Front wheel travel
- 180 mm
- Rake
- 28.0°
- Rear suspension
- Swingarm (link suspension)
- Rear wheel travel
- 168 mm
- Trail
- 107 mm
Brakes and wheels
Brakes and wheels
- Front brakes
- Single disc
- Front brakes diameter
- 220 mm
- Front tyre
- 70/100-19
- Rear brakes
- Expanding brake (drum brake)
- Rear brakes diameter
- 110 mm
- Rear tyre
- 90/100-16
Colours and equipment
Colours and equipment
- Colours
- Team Yamaha Blue and White
Model years
2007
Engine capacity: 123.7 cm³ → 124 cm³; Seat height: 805 mm → 775 mm
2011
Seat height: 775 mm → 805 mm
2013
Wet weight: 89.8 kg → 85 kg
2016
Wet weight: 85 kg → 89.8 kg
2019
Wet weight: 89.8 kg → 90 kg; Fuel capacity: 6.1 L → 6 L
| Specification | ||||||
|---|---|---|---|---|---|---|
| Engine capacity | 124 cm³ | 124 cm³ | 124 cm³ | 124 cm³ | 124 cm³ | 124 cm³ |
| Power | 15 hp (11 kW) | 15 hp (11 kW) | 15 hp (11 kW) | 15 hp (11 kW) | 15 hp (11 kW) | 15 hp (11 kW) |
| Torque | — | — | — | — | — | — |
| Wet weight | 89.8 kg | 89.8 kg | 89.8 kg | 90 kg | 90 kg | 90 kg |
| Seat height | 805 mm | 805 mm | 805 mm | 805 mm | 805 mm | 805 mm |
| Fuel capacity | 6.1 L | 6.1 L | 6.1 L | 6 L | 6 L | 6 L |
Pros and cons
Advantages
Low wet weight
At 90 kg wet, it takes less effort to balance and maneuver at low speeds.
Room for rough ground
The 295 mm ground clearance and long wheel travel help it clear obstacles and absorb uneven ground.
Two starting methods
The kick starter offers a manual alternative to the electric starter.
Things to consider
Limited fuel capacity
The 6.00 L tank can make longer rides more constrained by fuel stops.
Tall seat
An 805 mm seat can make putting both feet down difficult for shorter riders.
Rear drum brake
The 110 mm rear drum lacks the braking feel and wet-weather consistency of a disc brake.
Rider fit
Rider fit calculator
Calculated in your browser
Don't know it? Leave this empty and we'll estimate it from your height.
Estimated from your height: 79 cm
How to measure
Stand barefoot with your back to a wall. Hold a book firmly between your legs, then measure from the floor to the top edge of the book.
Estimated ground reach
Both feet likely flat
You should have a stable stance at a stop, although seat width and suspension setup still matter.
Seat height
805 mm
Approx. loaded height
775 mm
Estimate assumes about 30 mm of suspension sag. Seat width, footwear, luggage and suspension settings can change real reach. Always sit on the motorcycle before buying.
Fuel range calculator
Enter your expected fuel consumption to estimate the distance on a full tank, with or without a fuel reserve.
Tank 6 L at 6 L/100 km
Lower consumption = longer range.
Estimated range
100 km
With 10% reserve
90 km
This is a planning estimate, not a measured result. Speed, route, weather, load and riding style can change real consumption.
FAQ
How much power does the 2021 Yamaha TT R125LW/E make?
Its 124.0 cm³ four-stroke single produces 15 hp (11 kW).
What is the seat height?
The seat is 805 mm high.
How much does it weigh?
It weighs 90 kg wet and 81 kg dry.
How large is the fuel tank?
The fuel tank holds 6.00 L.
















