Engine & performance
- Displacement
- 124.6 cc
- Cooling
- Air Cooled
- Maximum power
- 13 bhp @ 9,000 rpm
- Maximum torque
- 10 Nm @ 7,000 rpm
- Claimed mileage
- 58 kmpl
- Top speed
- 105 kmph
- Transmission
- 5 Speed Manual
- Gears
- 5-speed
- Final drive
- Chain Drive

The Bajaj Discover 125 ST is a discontinued 125 cc air-cooled motorcycle with a 5-speed gearbox — a distinct, higher-power trim from the separately-catalogued plain Discover 125. BikeWale lists 13 bhp @ 9000 rpm maximum power, 10 Nm @ 7000 rpm maximum torque, a disc front / drum rear brake, a 10 litre fuel tank and a 124 kg kerb weight. Tyre sizes (2.75-17 front, 3.00-17 rear) are corroborated by CarDekho's tyre-fitment page for this exact variant.
The Bajaj Discover 125 ST is a motorcycle from Bajaj Auto. It has been discontinued. Mechiee still services it at your doorstep. With a 124.6 cc engine it sits in the 125–150 cc class.
Power comes from a 124.6 cc air-cooled engine that makes 13 bhp at 9,000 rpm and 10 Nm of torque at 7,000 rpm. Divide power by kerb weight and it has about 106 PS per tonne; by that measure, there is enough go for confident city riding and relaxed highway cruising. The claimed top speed is 105 km/h.
It has a 5-speed manual gearbox, and a chain carries drive to the rear wheel.
It is built around a semi double cradle frame. Suspension is by telescopic fork with Anti-friction DU bush at the front and nitrox monoshock with gas canister at the rear. Braking is by a disc at the front and a drum at the rear. It rides on 17-inch alloy wheels — 2.75-17 at the front and 3.00-17 at the rear.
The seat is 800 mm off the ground, which is about average and suits most riders. It weighs 124 kg ready to ride. Ground clearance is 170 mm — enough for most speed breakers. The wheelbase is 1,305 mm. Its 10 L fuel tank and claimed mileage of 58 kmpl work out to roughly 580 km per tankful on paper; real-world range is usually lower.
For the Bajaj Discover 125 ST, Mechiee offers a fixed ₹899 doorstep service.
Its chain drive needs regular cleaning, lubrication and slack adjustment.
These figures are listed by independent publications; where they overlap, they agree. Exact values can differ slightly by variant and model year.
Sources: BikeWale, CarDekho Tyres
Specifications last checked:
Claimed mileage
58 kmpl
Manufacturer's claimed figure; real-world mileage is usually lower.
Estimated range
about 580 km
Claimed mileage × tank size. An estimate, not a promise.
Mechiee doorstep service
₹899
Mechiee's fixed doorstep service price for this model.
Follow the schedule in the owner's manual for your exact variant and year. A regular service is the cheapest way to catch small problems before they become expensive ones.
Engine oil is the single most important consumable to keep fresh. Top up between services if the level drops, and change it on schedule.
With Disc and Drum brakes, check pad or shoe wear, lever and pedal free play, and braking feel at every service.
A clean, correctly tensioned and lubricated chain lasts longer and wastes less power. Check slack regularly, especially after riding in rain or dust.
A clogged air filter or worn spark plug shows up as hard starting, weak throttle response and poorer fuel economy. Both are checked at a regular service and replaced when worn.
Brake fluid absorbs moisture over time, which lowers its boiling point. Have its level and condition checked and change it on the interval in the owner's manual.
This bike runs 2.75-17 / 3.00-17 tyres. Check pressure, tread depth and sidewalls, and replace tyres that are worn or cracked.
The battery is listed as 12 V, 5 Ah (Low Maintenance Battery). Weak starting, dim lights or a flickering console are early signs the battery or charging system needs a look.
Book a verified Mechiee mechanic, track them live, and keep a permanent record of every job on your bike.
Doorstep service₹899
Mechiee mechanics service the Bajaj Discover 125 ST at your doorstep across 119 areas of Pune, with bigger jobs handled at a Mechiee Service Center. Pick your area to see local details.
Manufacturer figures for each bike. A dash means the value is not published in our sources.
| Specification | Bajaj Discover 125 ST | Bajaj Discover 125 | Bajaj Discover 110 | Bajaj Discover 135 |
|---|---|---|---|---|
| Engine | 124.6 cc | 124.5 cc | 115.5 cc | 134.5 cc |
| Max power | 13 bhp @ 9,000 rpm | 12.3 bhp @ 9000 rpm | 8.6 PS @ 7000 rpm | 13.10 PS @8500 rpm |
| Max torque | 10 Nm @ 7,000 rpm | 10.8 Nm @ 6500 rpm | 9.81 Nm @ 5000 rpm | 11.88 Nm @ 6500 rpm |
| Claimed mileage | 58 kmpl | 76 Kmpl (ARAI-certified, per BikeDekho) | 82.4 Kmpl (ARAI-certified, per BikeDekho) | — |
| Gears | 5-speed | 5-speed | 4-speed | — |
| Kerb weight | 124 kg | 124 kgs | 117.5 kg | 133 kg |
| Fuel tank | 10 litres | 10 L | 8 L | 10 L |
| Front brake | Disc | Disc | Drum, 110 mm | Disc, 240 mm |
| Rear brake | Drum | Drum | Drum, 110 mm | Drum, 130 mm |
What the technical terms on this page mean.
The Bajaj Discover 125 ST has a 124.6 cc engine.
The Bajaj Discover 125 ST is rated at 13 bhp @ 9,000 rpm maximum power and 10 Nm @ 7,000 rpm maximum torque.
The claimed figure for the Bajaj Discover 125 ST is 58 kmpl. Real-world mileage is usually lower and depends on riding style, load, road and traffic conditions and how well the bike is maintained.
The Bajaj Discover 125 ST has Disc at the front and Drum at the rear.
The Bajaj Discover 125 ST runs 2.75-17 at the front and 3.00-17 at the rear on alloy wheels.
Follow the service schedule in the owner's manual for your exact variant and year. Between services, keep an eye on engine oil, chain, tyres and battery. With Disc and Drum brakes, brake wear and adjustment are worth checking at every visit.
Multiplying the claimed 58 kmpl by the 10 litres tank gives roughly 580 km on a full tank. That is an estimate from claimed figures; real-world range is usually lower.
No. The Bajaj Discover 125 ST has been discontinued. Mechiee still lists doorstep servicing for it.
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