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

KTM 450 SX

Key specifications

Engine
449 cc
Weight
105 kg
Fuel type
petrol
Fuel capacity
1.9 L
Transmission
4-speed
Seat height
36 mm
Front brakes
Single disc
Rear brakes
Single disc

Overview

Unleashing the Beast: The 2006 KTM 450 SX Introducing the 2006 KTM 450 SX, a fierce competitor in the cross-motocross category that embodies the spirit of racing and rugged terrain domination. Designed for serious enthusiasts and professional riders alike, the KTM 450 SX delivers an exhilarating riding experience with its potent powertrain and race-ready ergonomics. This motorcycle is not just a machine; it’s a testament to KTM's commitment to performance and innovation, making it a top pick for those who crave victory on the track and the thrill of off-road exploration. At the heart of the 450 SX is a robust 449.39 ccm single-cylinder, four-stroke engine that unleashes a thrilling performance. With a compression ratio of 12.0:1 and a precise bore and stroke measurement of 95.0 x 63.4 mm, this powerhouse is capable of delivering explosive acceleration and torque. The engine is fed by a Keihin MX FCR 41 carburettor, ensuring optimal fuel delivery for maximum responsiveness. Coupled with a 4-speed gearbox and a hydraulic wet multi-disc clutch, the KTM 450 SX offers seamless gear transitions, allowing riders to stay in control when tackling the toughest trails. The liquid cooling system keeps the engine at optimal temperatures, enabling riders to push their limits without fear of overheating. The 2006 KTM 450 SX is engineered with cutting-edge technology and features that enhance its performance and rider comfort. Its central double-cradle frame, crafted from durable 25 CrMo4 steel, provides exceptional rigidity and stability, while the WP-USD 48 mm front suspension and WP-PDS rear shock absorber deliver 300 mm and 335 mm of travel, respectively, ensuring a smooth ride over rugged terrains. The motorcycle's lightweight design at just 105.2 kg (231.9 pounds) allows for agile maneuverability, complemented by a ground clearance of 380 mm (15.0 inches) that enables confident handling over obstacles. With a seat height of 925 mm (36.4 inches), riders can find a commanding position to navigate through challenging courses. **

Pros

  • Powerful Engine Performance: The 450 SX's single-cylinder engine provides impressive torque and acceleration, making it ideal for both competitive racing and off-road adventures.
  • Advanced Suspension Setup: With top-tier WP suspension components, riders can expect superior handling and comfort, even on the roughest terrains.
  • Lightweight and Agile: Weighing just over 231 pounds, this bike offers nimble handling, making it easy to maneuver in tight corners and during aggressive riding.

Cons

  • Kick Start Only: The absence of an electric start can be a drawback for some riders, especially in challenging conditions where quick restarts are essential.
  • High Seat Height: The seat height may not be suitable for shorter riders, potentially leading to difficulty in reaching the ground when stopped.
  • Fuel Capacity: With a 7-liter fuel tank, riders may find themselves needing to refuel more frequently during long rides or races, compared to competitors with larger tanks.

Technical details

Source specification data

Make
KTM
Model
450 SX
Category
Cross-motocross
Starter
Kick
Clutch
Wet multi-disc clutch, operated hydraulically
Gearbox
4-speed
Ignition
Kokusan digital 4K-3A
Fuel System
Carburettor. Keihin MX FCR 41
Bore X Stroke
95.0 x 63.4 mm (3.7 x 2.5 inches)
Compression
12.0:1
Displacement
449.39 ccm (27.42 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, four-stroke
Exhaust System
Aluminum
Lubrication System
Pressure lubrication with 2 Eaton pumps
Valves Per Cylinder
4
Dry Weight
105.2 kg (231.9 pounds)
Seat Height
925 mm (36.4 inches) If adjustable, lowest setting.
Fuel Capacity
7.00 litres (1.85 gallons)
Overall Width
450 mm (17.7 inches)
Ground Clearance
380 mm (15.0 inches)
Rake
26.5°
Trail
112 mm (4.4 inches)
Rear Tyre
110/90-19
Frame Type
Central double-cradle-type 25 CrMo4
Front Tyre
80/100-21
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
WP-PDS shock absorber
Front Suspension
WP-USD 48 mm (1.89 inches)
Rear Wheel Travel
335 mm (13.2 inches)
Front Wheel Travel
300 mm (11.8 inches)
Rear Brakes Diameter
220 mm (8.7 inches)
Front Brakes Diameter
260 mm (10.2 inches)