Back to Bike FinderYears: 2012 · 2009 · 2006
KTM 450 SX
2012ATV

KTM 450 SX

Key specifications

Engine
510 cc
Weight
165 kg
Fuel type
petrol
Fuel capacity
2.7 L
Transmission
5-speed
Seat height
31 mm
Front brakes
Single disc. Floating Wave discs, 4-piston fixed caliper
Rear brakes
Single disc. Single piston floating caliper

Overview

Introducing the 2012 KTM 450 SX, a motorcycle that stands tall in the competitive world of off-road racing and motocross. Renowned for its lightweight construction and formidable performance, the 450 SX is specifically designed for riders who seek both agility and power on the track. Positioned as a top contender in the ATV category, it boasts an impressive combination of advanced engineering and cutting-edge technology, making it a favorite among serious racers and weekend warriors alike. At the heart of the KTM 450 SX is a robust 510.40 ccm single-cylinder, four-stroke engine that delivers exhilarating power and torque. With a compression ratio of 11.0:1 and a carefully engineered bore and stroke of 97.0 x 60.8 mm, this machine is built for performance. The Keihin MX FCR 41 carburetor ensures optimal fuel delivery, while the Kokusan digital ignition system provides precise timing for smooth acceleration. Riders will appreciate the responsive 5-speed gearbox and the wet multi-disc hydraulic clutch, allowing for seamless gear changes even under the most demanding conditions. Whether you're navigating tight corners or powering up hills, the 450 SX's liquid cooling system ensures that the engine maintains peak performance without overheating. KTM engineers have equipped the 450 SX with a lightweight yet durable chromoly frame and an aluminum subframe, providing a strong foundation for the bike's advanced suspension system. The Ohlins fully adjustable front and rear suspension allows for tailored handling that adapts to various terrains, offering 244 mm of front travel and 258 mm of rear travel for optimal comfort and control. The braking system is equally impressive, featuring floating wave discs and a 4-piston fixed caliper in the front, ensuring precise stopping power. With a seat height of 795 mm, the bike allows riders of varying statures to handle it confidently, further enhancing the overall riding experience. **

Pros

  • Powerful Engine Performance: The 510.40 ccm engine delivers impressive torque and acceleration, ideal for competitive racing.
  • Advanced Suspension System: Ohlins suspension offers superior adjustability, enhancing handling and ride comfort across diverse terrains.
  • Lightweight Construction: Weighing in at just 165 kg, the bike is nimble and responsive, allowing for quick maneuvers on the track.

Cons

  • Limited Fuel Capacity: With a 10.30-litre tank, fuel range may be a concern during longer rides or races.
  • Seat Height: At 795 mm, the seat height may be a challenge for shorter riders, affecting confidence and control.
  • Maintenance Requirements: The high-performance engine and components may require more frequent maintenance, which can be demanding for some owners.

Technical details

Source specification data

Make
KTM
Model
450 SX
Category
ATV
Starter
Electric
Color Options
Orange/Black
Clutch
Wet multi-disc clutch, operated hydraulically
Gearbox
5-speed
Ignition
Kokusan digital 4K-3B
Driveline
14:38
Engine Type
Cam levers, drive via helical gear pair and tooth-wheel chain
Fuel System
Carburettor. Keihin MX FCR 41
Bore X Stroke
97.0 x 60.8 mm (3.8 x 2.4 inches)
Compression
11.0:1
Displacement
510.40 ccm (31.14 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, four-stroke
Lubrication System
Pressure lubrication with 2 Eaton pumps
Valves Per Cylinder
4
Transmission Type Final Drive
Chain
Dry Weight
165.0 kg (363.8 pounds)
Seat Height
795 mm (31.3 inches) If adjustable, lowest setting.
Fuel Capacity
10.30 litres (2.72 gallons)
Ground Clearance
265 mm (10.4 inches)
Rear Tyre
20/11-9
Frame Type
Chromoly (25 Cr Mo4)
.
Subframe
:
Aluminum
.
Front Tyre
20/7-10
Rear Brakes
Single
disc.
Single
piston floating caliper
Front Brakes
Single
disc.
Floating Wave
discs, 4-piston fixed caliper
Rear Suspension
S Mono
-shock,
Fully Adjustable
,
Front Suspension
Ohlins
fully adjustable,
A
-arms
Rear Wheel Travel
258 mm (10.2 inches)
Front Wheel Travel
244 mm (9.6 inches)
Rear Brakes Diameter
200 mm (7.9 inches)
Front Brakes Diameter
180 mm (7.1 inches)

Available colors

Orange/Black