KTM 450 SMR - 2021 Specifications and Reviews

The 2021 KTM 450 SMR is a lightweight supermotard built for aggressive street riding and track enthusiasts seeking nimble handling and genuine performance. Powered by a potent 449cc liquid-cooled single-cylinder four-stroke with Brembo brakes and quality Suter clutch, it excels at rapid direction changes and accelerative fun on tarmac.

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General information

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CategorySuper motard
Year2021
ModelKTM 450 SMR

Engine and Transmission Specifications

Greenhouse gases85.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption3.68 litres/100 km (27.2 km/l or 63.92 mpg)
Driveline5/8 x 1/4´ chain
ClutchWet multi-disc Suter clutch, Brembo hydraulics
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
Lubrication systemForced oil lubrication with 2 oil pumps
IgnitionKeihin EMS
Fuel controlSingle Overhead Cams (SOHC)
Bore x Stroke95.0 x 63.4 mm (3.7 x 2.5 inches)
Engine typeSingle cylinder, four-stroke
Capacity:449.3 ccm (27.42 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Diameter310 mm (12.2 inches)
Front brakesSingle disc
Rear wheel travel310 mm (12.2 inches)
Rear SuspensionWP XACT Monoshock with linkage
Front wheel travel300 mm (11.8 inches)
Front SuspensionWP XACT-USD, Ø 48 mm
Rake (fork angle)26.5°
Frame typeCentral double-cradle-type 25CrMo4 steel

Physical measures and capacities

Fuel capacity8.50 litres (2.25 US gallons)
Wheelbase1482 mm (58.3 inches)
Ground clearance355 mm (14.0 inches)
Seat height960 mm (37.8 inches) If adjustable, lowest setting.
Dry weight105.5 kg (232.6 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsTraction control
StarterElectric
Color optionsOrange/white/black

Performance Profile & Rider Fit

Best For

Track92%
City25%
Cornering97%
Daily Riding15%
Touring8%
Passenger5%

Rider Profile

Best ForThis is a supermoto built for experienced riders who are already comfortable with a tall, light, single-cylinder machine that demands active input.
PurposeIt exists purely to carve up tight tarmac circuits and technical mixed-surface courses with razor-sharp direction changes, not to cover distance or haul gear.
Rider FitThe tall 898mm seat height, minimal weight at 109.3kg, and aggressive ergonomics reward a fit, confident rider who can move around the bike and manage a punchy single-cylinder power delivery.
CharacterExpect an explosive, visceral character with instant throttle response, flickable handling, and a chassis that thrives on aggressive lean angles and hard braking into corners.
Not Ideal ForThis bike is not for beginners, commuters, passengers, or anyone seeking comfort, wind protection, or long-distance touring capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 KTM 450 SMR Rider Ergonomics Assessment

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Feet:

At 960mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2021 KTM 450 SMR, with a stretched knee angle of around 180 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2021 KTM 450 SMR is a highly impressive motorcycle that offers top-notch performance and handling. With its powerful 450cc engine, lightweight chassis, and advanced suspension, this bike delivers an exhilarating riding experience. Whether you're tearing up the track or carving through tight city streets, the KTM 450 SMR provides exceptional agility and control. The sleek, modern design and high-quality components make this bike a standout choice for riders who demand the best in performance and style. Overall, the 2021 KTM 450 SMR is a excellent choice for riders who want a high-performance motorcycle that can handle a variety of riding conditions. Its powerful engine and agile handling make it a top contender in the supermoto segment. With its superior performance and stylish design, the KTM 450 SMR is sure to impress any rider looking for a thrilling and capable motorcycle.
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