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Yamaha R15S

The Yamaha R15S is a discontinued 155 cc liquid-cooled motorcycle with a 6-speed manual gearbox and a slipper clutch. BikeWale lists 18.1 bhp @ 10,000 rpm maximum power, 14.2 Nm @ 7,500 rpm maximum torque, dual-channel ABS, disc brakes at both ends, an 11 litre fuel tank and a 142 kg kerb weight.

Engine
155 cc
Max power
18.1 bhp @ 10,000 rpm
Max torque
14.2 Nm @ 7,500 rpm
Claimed mileage
43 kmpl (claimed, per 91wheels)
Fuel tank
11 Litres
Kerb weight
142 kg

About the Yamaha R15S

Overview

The Yamaha R15S is a sports motorcycle from Yamaha. It has been discontinued. Mechiee still services it at your doorstep. Sports bikes put performance first, usually with a sportier riding position and sharper handling than everyday bikes. With a 155 cc engine it sits in the 150–250 cc class.

Engine and performance

Power comes from a 155 cc single-cylinder liquid-cooled engine that makes 18.1 bhp at 10,000 rpm and 14.2 Nm of torque at 7,500 rpm. Divide power by kerb weight and it has about 129 PS per tonne; by that measure, it is lively, with easy overtakes and relaxed highway speeds. The claimed top speed is 136 km/h. It has electric start.

Gearbox

It has a 6-speed manual gearbox with a 1-down, 5-up shift pattern, and a chain carries drive to the rear wheel. Its slipper clutch lightens the lever and stops the rear wheel hopping when you downshift hard.

Chassis, brakes and tyres

It is built around a deltabox frame. Suspension is by telescopic fork at the front and Linked-type monocross suspension at the rear. Braking is by a disc at the front and a disc at the rear, with dual-channel ABS. ABS on both wheels keeps either tyre from locking under hard braking. It rides on 17-inch alloy wheels with tubeless tyres — 100/80 - 17 at the front and 140/70 - R17 at the rear.

Size, comfort and range

The seat is 815 mm off the ground, which is about average and suits most riders. It weighs 142 kg ready to ride. Ground clearance is 170 mm — enough for most speed breakers. It is 1,990 mm long, with 1,325 mm between the axles. Its 11 L fuel tank and claimed mileage of 43 kmpl work out to roughly 473 km per tankful on paper; real-world range is usually lower.

Features and equipment

Equipment includes a digital instrument console, an LED headlamp, gear position indicator, windscreen, shift light, low fuel indicator and low oil indicator. Safety equipment includes engine kill switch, side-stand engine cut-off, side-stand warning and malfunction indicator.

Owning one

The manufacturer's warranty is 30,000 km or 2 years. It comes with 4 free services, the first due at 1000 km or 30 days. For the Yamaha R15S, Mechiee offers a fixed ₹1,199 doorstep service.

Who it suits

It is best suited to riders who want performance and sharp handling.

Care notes for this model

Recommended tyre pressures are 29 psi front and 33 psi rear, solo or with a pillion. The published service intervals are 1st service at 1000 km or 30 days, 2nd service at 5000 km or 150 days, 3rd service at 9000 km or 270 days and 4th service at 13000 km or 390 days. Its chain drive needs regular cleaning, lubrication and slack adjustment.

Yamaha R15S specifications

These figures come from a single publication (BikeWale) and have not been confirmed against the manufacturer. The model is discontinued. Exact values can differ slightly by variant and model year.

Engine & performance

Displacement
155 cc
Configuration
1 Cylinder, Liquid Cooled, 4 Valves
Cooling
Liquid Cooled
Starting
Self Start
Maximum power
18.1 bhp @ 10,000 rpm
Maximum torque
14.2 Nm @ 7,500 rpm
Claimed mileage
43 kmpl (claimed, per 91wheels)
Top speed
136 kmph
Transmission
Manual
Gears
6-speed
Clutch
Assist and slipper clutch
Final drive
Chain Drive
Bore x stroke
58 mm x 58.7 mm
Compression ratio
11.6 : 1
Emission norm
BS6 Phase 2
Spark plugs
1 Per Cylinder
Gear shift pattern
1 Down 5 Up
Riding range (claimed mileage x tank)
506 km

Dimensions & capacity

Length
1990 mm
Width
725 mm
Height
1135 mm
Wheelbase
1,325 mm
Ground clearance
170 mm
Seat height
815 mm
Kerb weight
142 kg
Fuel tank
11 Litres
Fuel reserve
2.2 litres

Brakes, suspension & tyres

Front brake
Disc
Rear brake
Disc
Braking system
Dual Channel ABS
Front suspension
Telescopic Fork
Rear suspension
Linked-type monocross suspension
Front tyre
100/80 - 17
Rear tyre
140/70 - R17
Wheels
Alloy
Tyre type
Tubeless
Front/rear wheel size
17 inch
Wheel size
Front - 17 inch, Rear - 17 inch
Tyre pressure (rider only)
Front - 29 psi, Rear - 33 psi
Tyre pressure (with pillion)
Front - 29 psi, Rear - 33 psi

Chassis & frame

Frame type
Deltabox

Electricals

Battery
12V, 4.0Ah
Headlamp
Dual LED Headlamp
Instrument console
Digital
Tail lamp
LED
Indicators
LED

Features & technology

  • Gear position indicator
  • Windscreen
  • Shift light
  • Low fuel indicator
  • Low oil indicator

Safety

  • Dual Channel ABS
  • Engine kill switch
  • Side-stand engine cut-off
  • Side-stand warning
  • Malfunction indicator

Sources: BikeWale, 91wheels, BikeWale

Specifications last checked:

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Owning the Yamaha R15S

  • Claimed mileage

    43 kmpl (claimed, per 91wheels)

    Manufacturer's claimed figure; real-world mileage is usually lower.

  • Estimated range

    about 473 km

    Claimed mileage × tank size. An estimate, not a promise.

  • Manufacturer warranty

    30,000 km or 2 years

    Terms and conditions apply.

  • Free services

    4 from the manufacturer

    At the brand's authorised service centres.

  • Mechiee doorstep service

    ₹1,199

    Mechiee's fixed doorstep service price for this model.

Manufacturer service schedule

  1. 1st service1000 km or 30 days
  2. 2nd service5000 km or 150 days
  3. 3rd service9000 km or 270 days
  4. 4th service13000 km or 390 days

As published for this model; whichever comes first. Check your owner’s manual for the exact schedule.

Maintaining the Yamaha R15S

  • 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 Disc 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.

  • Coolant & cooling system

    A liquid-cooled engine relies on coolant. Check the level and look over hoses and the radiator for leaks or damage, and replace coolant as the owner's manual directs.

  • 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 100/80 - 17 / 140/70 - R17 tyres. Check pressure, tread depth and sidewalls, and replace tyres that are worn or cracked.

  • Battery & electricals

    The battery is listed as 12V, 4.0Ah. Weak starting, dim lights or a flickering console are early signs the battery or charging system needs a look.

Mechiee service

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Compare with similar Yamaha bikes

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

SpecificationYamaha R15SYamaha MT-15Yamaha R15 V3Yamaha R15 V4
Engine155 cc155 cc155 cc155 cc
Max power18.1 bhp @ 10,000 rpm18.4 PS @ 10000 rpm18.37 bhp @ 10,000 rpm18.4 PS @ 10000 rpm
Max torque14.2 Nm @ 7,500 rpm14.1 Nm @ 7500 rpm14.1 Nm @ 8,500 rpm14.2 Nm @ 7500 rpm
Claimed mileage43 kmpl (claimed, per 91wheels)——55.2 kmpl (claimed, per 91wheels)
Gears6-speed6-speed6-speed6-speed
Kerb weight142 kg141 kg142 kg141 kg
Fuel tank11 Litres10 L11 L11 L
Front brakeDiscDisc, 282 mmDiscDisc, 282 mm
Rear brakeDiscDisc, 220 mmDiscDisc, 220 mm

Yamaha R15S specs explained

What the technical terms on this page mean.

ABS
Anti-lock braking system. It stops a wheel locking up during hard braking so the rider can keep steering. A single-channel system works on one wheel, usually the front; a dual-channel system works on both.
Liquid cooling
Coolant circulates through the engine and a radiator, keeping temperatures steadier than air alone, especially in traffic or under load.
Assist and slipper clutch
The assist part makes the clutch lever lighter. The slipper part eases the rear wheel's tendency to hop when you shift down hard.
Tubeless tyres
Tyres with no inner tube. A small puncture usually loses air slowly, which makes roadside repair easier.
Kerb weight
The weight of the bike ready to ride, with its fluids and fuel, but without a rider or luggage.
Bore x stroke
The cylinder's width and the piston's travel. A larger bore relative to stroke tends to favour revs; a longer stroke tends to favour low-speed pull.
Compression ratio
How much the fuel-air mixture is squeezed before it is ignited. It is one of the factors behind an engine's efficiency and power.

Frequently Asked Questions

The Yamaha R15S has a 155 cc engine, described as 1 cylinder, liquid cooled, 4 valves.

The Yamaha R15S is rated at 18.1 bhp @ 10,000 rpm maximum power and 14.2 Nm @ 7,500 rpm maximum torque.

The claimed figure for the Yamaha R15S is 43 kmpl (claimed, per 91wheels). Real-world mileage is usually lower and depends on riding style, load, road and traffic conditions and how well the bike is maintained.

The Yamaha R15S has Disc at the front and Disc at the rear, with Dual Channel ABS.

The Yamaha R15S runs 100/80 - 17 at the front and 140/70 - R17 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 Disc brakes, brake wear and adjustment are worth checking at every visit.

Multiplying the claimed 43 kmpl (claimed, per 91wheels) by the 11 Litres tank gives roughly 473 km on a full tank. That is an estimate from claimed figures; real-world range is usually lower.

The manufacturer states a warranty of 30,000 km or 2 years. Terms and conditions apply.

No. The Yamaha R15S has been discontinued. Mechiee still lists doorstep servicing for it.

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