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Bajaj AutoDiscontinuedmotorcycle124.6 cc

Bajaj Discover 125 ST

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.

Engine
124.6 cc
Max power
13 bhp @ 9,000 rpm
Max torque
10 Nm @ 7,000 rpm
Claimed mileage
58 kmpl
Fuel tank
10 litres
Kerb weight
124 kg

About the Bajaj Discover 125 ST

Overview

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.

Engine and performance

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.

Gearbox

It has a 5-speed manual gearbox, and a chain carries drive to the rear wheel.

Chassis, brakes and tyres

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.

Size, comfort and range

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.

Owning one

For the Bajaj Discover 125 ST, Mechiee offers a fixed ₹899 doorstep service.

Care notes for this model

Its chain drive needs regular cleaning, lubrication and slack adjustment.

Bajaj Discover 125 ST specifications

These figures are listed by independent publications; where they overlap, they agree. Exact values can differ slightly by variant and model year.

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

Dimensions & capacity

Wheelbase
1,305 mm
Ground clearance
170 mm
Seat height
800 mm
Kerb weight
124 kg
Fuel tank
10 litres

Brakes, suspension & tyres

Front brake
Disc
Rear brake
Drum
Front suspension
Telescopic Fork with Anti-friction DU Bush
Rear suspension
Nitrox Monoshock with gas canister
Front tyre
2.75-17
Rear tyre
3.00-17
Wheels
Alloy
Tyre type
Tubed

Chassis & frame

Frame type
Semi Double Cradle Frame

Electricals

Battery
12 V, 5 Ah (Low Maintenance Battery)

Sources: BikeWale, CarDekho Tyres

Specifications last checked:

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Owning the Bajaj Discover 125 ST

  • 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.

Maintaining the Bajaj Discover 125 ST

  • Routine servicing

    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 & filter

    Engine oil is the single most important consumable to keep fresh. Top up between services if the level drops, and change it on schedule.

  • Brake inspection

    With Disc and Drum brakes, check pad or shoe wear, lever and pedal free play, and braking feel at every service.

  • Chain cleaning & lubrication

    A clean, correctly tensioned and lubricated chain lasts longer and wastes less power. Check slack regularly, especially after riding in rain or dust.

  • Air filter & spark plug

    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.

  • Disc brake fluid

    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.

  • Tyre inspection

    This bike runs 2.75-17 / 3.00-17 tyres. Check pressure, tread depth and sidewalls, and replace tyres that are worn or cracked.

  • Battery & electricals

    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.

Mechiee service

Looking for service for your Bajaj Discover 125 ST?

Book a verified Mechiee mechanic, track them live, and keep a permanent record of every job on your bike.

Doorstep service₹899

Compare with similar Bajaj Auto bikes

Manufacturer figures for each bike. A dash means the value is not published in our sources.

SpecificationBajaj Discover 125 STBajaj Discover 125Bajaj Discover 110Bajaj Discover 135
Engine124.6 cc124.5 cc115.5 cc134.5 cc
Max power13 bhp @ 9,000 rpm12.3 bhp @ 9000 rpm8.6 PS @ 7000 rpm13.10 PS @8500 rpm
Max torque10 Nm @ 7,000 rpm10.8 Nm @ 6500 rpm9.81 Nm @ 5000 rpm11.88 Nm @ 6500 rpm
Claimed mileage58 kmpl76 Kmpl (ARAI-certified, per BikeDekho)82.4 Kmpl (ARAI-certified, per BikeDekho)—
Gears5-speed5-speed4-speed—
Kerb weight124 kg124 kgs117.5 kg133 kg
Fuel tank10 litres10 L8 L10 L
Front brakeDiscDiscDrum, 110 mmDisc, 240 mm
Rear brakeDrumDrumDrum, 110 mmDrum, 130 mm

Bajaj Discover 125 ST specs explained

What the technical terms on this page mean.

Air cooling
The engine is cooled by air flowing over its fins. It is simpler and needs no coolant, which keeps upkeep straightforward.
Monoshock
A single rear shock absorber that does the work of a pair.
Kerb weight
The weight of the bike ready to ride, with its fluids and fuel, but without a rider or luggage.

Frequently Asked Questions

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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