Side-by-Side Comparison

Roadmaster Prime vs KTM 450 SMR

Specs, mileage, performance & price compared in Hong Kong.

Roadmaster

Key Specifications

Roadmaster PrimeSpecKTM 450 SMR

HK$38,000PriceHK$97,500

1869Engine (cc)449

9Power (hp)84

8Torque (Nm)55

55.0Mileage (km/l)20.0

100Weight (kg)108

10Fuel Tank (L)7

8.5Rating9.6

Our Pick for Hong Kong

KTM 450 SMR

Based on overall rating & value

Full Specifications

Basic Information

Roadmaster PrimeAttributeKTM 450 SMR

V-twinEngine TypeSingle-cylinder, 4-stroke, SOHC

ManualTransmission TypeManual

Wet multi-plateClutch TypeWet, multi-disc, Suter slipper

Shaft driveDrive TypeChain

RoadmasterBrandKTM

Roadmaster PrimeModel450 SMR

Roadmaster Roadmaster PrimeBike NameKTM 450 SMR

2025Model Year2024

CruiserCategory/TypeSupermoto

BangladeshCountry of OriginAustria

BangladeshAssembly LocationAustria

AvailableStatusNot officially available

Black, Silver, RedColors AvailableOrange

Lead AcidBattery TypeLead-acid

Two-upSeat TypeSingle (race)

Cruiser handlebarsHandle TypeTapered Aluminum

Steel double cradleFrame TypeCentral double-cradle-type 25CrMo4 steel

Twin-sidedSwingarm TypeAluminum

Engine & Performance

Roadmaster PrimeAttributeKTM 450 SMR

1,869Displacement (cc)449.9

92 hpMaximum Power63 HP

158 NmMaximum Torque—

6.5Peak Power63

2Number of Cylinders1

OHVValve ConfigurationSOHC

2Valves Per Cylinder4

47.0Bore95 mm

51.8Stroke63.4 mm

100 mm x 118.4 mmBore x Stroke95 x 63.4 mm

9.2:1Compression Ratio12.75:1

Air-cooledCooling SystemLiquid cooled

Fuel injectionFuel Supply SystemKeihin EFI, 44 mm throttle body

ElectronicIgnition SystemKeihin EMS

V-twin longitudinalEngine LayoutSingle-cylinder

20W-40Engine Oil Grade10W-50

Electric & KickStarting SystemElectric starter

NoEngine Kill SwitchYes

Euro 3Emission StandardEuro 5

NoPower Mode IndicatorYes

—Valve Adjustment Interval10000

—Power-to-Weight Ratio0.58

Fuel & Mileage

Roadmaster PrimeAttributeKTM 450 SMR

0.8Engine Oil Capacity1.2 l

21 LFuel Tank Capacity7.2 l

55Mileage City20

60Mileage Highway28

150Load Capacity130

12.0Battery Capacity122.0

500 kmRange~180 km

NoRange IndicatorNo

NoLow Fuel WarningNo

Performance & Speed

Roadmaster PrimeAttributeKTM 450 SMR

85Top Speed180

NoQuick ShifterYes

NoTraction ControlYes

—Acceleration (0-60)~2.0 sec

—Acceleration (0-100)~3.5 sec

—Launch ControlYes

Transmission & Drive

Roadmaster PrimeAttributeKTM 450 SMR

6Number of Gears5

1-N-5Gear Pattern1-N-2-3-4-5

ChainPrimary Drive31:76

ChainFinal Drive14:45

ChainDrive Chain/Belt Type520, Non-sealed chain

—Gear Ratios5-speed

—Chain/Belt Life15000

Dimensions & Weight

Roadmaster PrimeAttributeKTM 450 SMR

2,510 mmOverall Length—

960 mmOverall Width—

1,470 mmOverall Height950

1,650 mmWheelbase1472 mm

120 mmGround Clearance281 mm

765 mmSeat Height898 mm

388 kgKerb Weight108 kg

—Battery Weight~1.5 kg

Brakes & Safety

Roadmaster PrimeAttributeKTM 450 SMR

DiscFront Brake TypeSingle disc, Brembo 4-piston radial fixed caliper

DiscRear Brake TypeSingle disc, Brembo 1-piston floating caliper

300 mmFront Brake Size310 mm

300 mmRear Brake Size220 mm

Dual-channelABS Type—

NoRemote Lock—

YesHandle LockYes

YesSteering LockYes

—Brake Pad Life15000

—Braking Distance~36 m (100-0 km/h)

—Anti-Theft SystemNo

Suspension & Handling

Roadmaster PrimeAttributeKTM 450 SMR

Telescopic forksFront Suspension TypeWP XACT-USD, Ø 48 mm

Twin shocksRear Suspension TypeWP XACT Monoshock with linkage

—Front Suspension Travel285 mm

—Rear Suspension Travel266 mm

—Adjustable ControlsCompression, Rebound, Preload

Wheels & Tires

Roadmaster PrimeAttributeKTM 450 SMR

130/70-18Front Tyre Size125/60-16.5

180/65-16Rear Tyre Size165/65-17

18Front Wheel Size16.5-inch

18Rear Wheel Size17-inch

TubeTyre TypeSlicks / Radial

RoadmasterTyre BrandMetzeler

15000Tyre Life8000

AlloyWheel TypeSpoked wheels

SteelWheel MaterialAluminium

Electrical & Battery

Roadmaster PrimeAttributeKTM 450 SMR

12.0Battery Voltage12.0

YesBattery RemovableYes

NoUSB Charging—

—Battery Rating12V, 2Ah

—Battery Life23

—Battery Warranty1 year (aftermarket)

—Battery Replacement Cost4000

—Battery Health CheckNo

—Battery Life IndicatorNo

Lighting & Display

Roadmaster PrimeAttributeKTM 450 SMR

NoError Code DisplayYes

HalogenHeadlight TypeN/A (track only)

BulbTail Light Type—

BulbTurn Signal Type—

NoDRLNo

NoHazard LightNo

AnalogDisplay TypeDigital

AnalogSpeedometer TypeDigital

AnalogOdometer TypeDigital

AnalogTachometer TypeDigital

AnalogFuel Gauge Type—

YesClockDigital

NoPass Light Switch—

NoSide Stand IndicatorNo

Technology & Features

Roadmaster PrimeAttributeKTM 450 SMR

NoTrip MeterDigital

NoMobile Connectivity—

NoNavigation—

NoRiding Modes2 throttle maps, TC, Launch

NoReverse Mode—

—Parking ModeSide Stand

Comfort & Ergonomics

Roadmaster PrimeAttributeKTM 450 SMR

MinimalWind ProtectionMinimal

YesPillion SeatNo

YesPillion FootrestNo

YesPillion Grab RailsNo

MidFootpeg PositionStandard

NoStorage CompartmentsNo

NoUnder Seat StorageNo

Roadmaster Prime vs KTM 450 SMR: Which one should you buy in Hong Kong?

The Roadmaster Prime and KTM 450 SMR are two popular motorcycles in Hong Kong. This side-by-side comparison covers engine, power, torque, mileage, top speed and weight so you can decide which one fits your riding style and budget. Better values are highlighted in the spec table above. Use the full specifications section to compare every technical detail before making your purchase decision.

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