Side-by-Side Comparison

Roadmaster Rex vs KTM 450 SMR

Specs, mileage, performance & price compared in Kuwait.

Roadmaster

Key Specifications

Roadmaster RexSpecKTM 450 SMR

KD14,000PriceKD3,840

1890Engine (cc)449

8Power (hp)84

126Torque (Nm)55

60.0Mileage (km/l)20.0

88Weight (kg)108

10Fuel Tank (L)7

8.5Rating9.6

Our Pick for Kuwait

KTM 450 SMR

Based on overall rating & value

Full Specifications

Basic Information

Roadmaster RexAttributeKTM 450 SMR

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

ManualTransmission TypeManual

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

ChainDrive TypeChain

Indian MotorcycleBrandKTM

Roadmaster RexModel450 SMR

Roadmaster RexBike NameKTM 450 SMR

2024Model Year2024

CruiserCategory/TypeSupermoto

USACountry of OriginAustria

Spirit Lake, Iowa, USAAssembly LocationAustria

AvailableStatusNot officially available

Thunder Black, Burgundy Metallic, Titanium SmokeColors AvailableOrange

Lithium-ionBattery TypeLead-acid

Single-pieceSeat TypeSingle (race)

StandardHandle TypeTapered Aluminum

Tubular steelFrame TypeCentral double-cradle-type 25CrMo4 steel

DualSwingarm TypeAluminum

Engine & Performance

Roadmaster RexAttributeKTM 450 SMR

1890Displacement (cc)449.9

108 hpMaximum Power63 HP

126 lb-ftMaximum Torque—

6.0Peak Power63

1Number of Cylinders1

SOHCValve ConfigurationSOHC

2Valves Per Cylinder4

101 mm x 113 mmBore x Stroke95 x 63.4 mm

11:1Compression Ratio12.75:1

Air & Oil cooledCooling SystemLiquid cooled

Electronic Fuel InjectionFuel Supply SystemKeihin EFI, 44 mm throttle body

Transistorized CoilIgnition SystemKeihin EMS

LongitudinalEngine LayoutSingle-cylinder

10W-40 SyntheticEngine Oil Grade10W-50

20,000 milesValve Adjustment Interval10000

Electric StartStarting SystemElectric starter

NoEngine Kill SwitchYes

0.34 hp/kgPower-to-Weight Ratio0.58

NoPower Mode IndicatorYes

—Bore95 mm

—Stroke63.4 mm

—Emission StandardEuro 5

Fuel & Mileage

Roadmaster RexAttributeKTM 450 SMR

20.0 litersFuel Tank Capacity7.2 l

42 mpgFuel Economy—

38 mpgMileage City20

46 mpgMileage Highway28

20 AhBattery Capacity122.0

570 kmRange~180 km

NoRange IndicatorNo

NoLow Fuel WarningNo

—Engine Oil Capacity1.2 l

—Load Capacity130

Performance & Speed

Roadmaster RexAttributeKTM 450 SMR

120 mphTop Speed180

5.5 secondsAcceleration (0-60)~2.0 sec

11 secondsAcceleration (0-100)~3.5 sec

NoQuick ShifterYes

NoTraction ControlYes

—Launch ControlYes

Transmission & Drive

Roadmaster RexAttributeKTM 450 SMR

6Number of Gears5

1-N-2-3-4-5-6Gear Pattern1-N-2-3-4-5

GearPrimary Drive31:76

BeltFinal Drive14:45

ChainDrive Chain/Belt Type520, Non-sealed chain

—Gear Ratios5-speed

—Chain/Belt Life15000

Dimensions & Weight

Roadmaster RexAttributeKTM 450 SMR

2610 mmOverall Length—

1020 mmOverall Width—

1450 mmOverall Height950

1630 mmWheelbase1472 mm

140 mmGround Clearance281 mm

660 mmSeat Height898 mm

407 kgKerb Weight108 kg

88Gross Weight—

—Battery Weight~1.5 kg

Brakes & Safety

Roadmaster RexAttributeKTM 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

ABSABS Type—

NoRemote Lock—

YesHandle LockYes

YesSteering LockYes

—Brake Pad Life15000

—Braking Distance~36 m (100-0 km/h)

—Anti-Theft SystemNo

Suspension & Handling

Roadmaster RexAttributeKTM 450 SMR

Telescopic ForkFront Suspension TypeWP XACT-USD, Ø 48 mm

Single ShockRear Suspension TypeWP XACT Monoshock with linkage

120 mmFront Suspension Travel285 mm

120 mmRear Suspension Travel266 mm

—Adjustable ControlsCompression, Rebound, Preload

Wheels & Tires

Roadmaster RexAttributeKTM 450 SMR

130/90B16Front Tyre Size125/60-16.5

180/60B16Rear Tyre Size165/65-17

17Front Wheel Size16.5-inch

17Rear Wheel Size17-inch

TubeTyre TypeSlicks / Radial

RoadmasterTyre BrandMetzeler

15000Tyre Life8000

SpokeWheel TypeSpoked wheels

Cast AluminumWheel MaterialAluminium

Electrical & Battery

Roadmaster RexAttributeKTM 450 SMR

12 VBattery Voltage12.0

6 hoursCharging Time—

StandardCharging Port—

NoUSB Charging—

—Battery Rating12V, 2Ah

—Battery Life23

—Battery Warranty1 year (aftermarket)

—Battery RemovableYes

—Battery Replacement Cost4000

—Battery Health CheckNo

—Battery Life IndicatorNo

Lighting & Display

Roadmaster RexAttributeKTM 450 SMR

NoError Code DisplayYes

LEDHeadlight TypeN/A (track only)

LEDTail Light Type—

LEDTurn Signal Type—

NoDRLNo

NoHazard LightNo

DigitalDisplay TypeDigital

Analog-Digital HybridSpeedometer TypeDigital

DigitalOdometer TypeDigital

AnalogTachometer TypeDigital

DigitalFuel Gauge Type—

NoClockDigital

NoPass Light Switch—

NoSide Stand IndicatorNo

Technology & Features

Roadmaster RexAttributeKTM 450 SMR

NoTrip MeterDigital

NoMobile Connectivity—

NoNavigation—

NoRiding Modes2 throttle maps, TC, Launch

NoReverse Mode—

—Parking ModeSide Stand

Comfort & Ergonomics

Roadmaster RexAttributeKTM 450 SMR

MinimalWind ProtectionMinimal

YesPillion SeatNo

YesPillion FootrestNo

YesPillion Grab RailsNo

MidFootpeg PositionStandard

NoStorage CompartmentsNo

NoUnder Seat StorageNo

Roadmaster Rex vs KTM 450 SMR: Which one should you buy in Kuwait?

The Roadmaster Rex and KTM 450 SMR are two popular motorcycles in Kuwait. 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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