KTM presented its pumped up 2012 450 EXC model destined to compete in the world’s largest enduro competition, the "International Six Days Enduro". This competition is one of the toughest you’ll ever find and covers thousands of kilometers of unbeaten tracks.

For the starters the 450 EXC Six Days comes with a catchy orange powder-coated frame and a newly developed clutch, with a robust steel cage and transmission-friendly back-damping. Additionally the hydraulic actuation mechanism from Brembo facilitates sensitive modulation of the clutch.

The motorcycle is also fitted with an improved silencer featuring a special Six Days coating which not only offers greater volume and a new design, but it also reduces noise levels to the stricter standards of the future. Power comes from a 449 cc engine which has enough grunt to deal with any type of terrain with poise.

Hit the jump for more information on the 2013 KTM 450 EXC Six Days.

  • 2012 KTM 450 EXC Six Days
  • Year:
  • Make:
  • Model:
  • Engine:
    Single cylinder, four-stroke
  • Transmission:
    6 gear, claw shifted
  • Energy:
    Injection. Keihin EFI, flow restrictor 42 mm
  • Displacement:
    449.30 ccm L

Press Release


2012 KTM 450 EXC Six Days Drivetrain
- image 435806
  • With the 450 EXC’s newly developed engine, KTM engineers have created a new dimension: The power unit has been redesigned from scratch and is now more compact, lighter and more powerful than before. Reduced reciprocating weight and a balancer shaft minimise vibration.
  • The newly developed Keihin engine management system with electronic fuel injection ensures spontaneous responsiveness from the engine. Various engine characteristics can be activated with an optional map select switch.
  • The 450 EXC’s new engine is equipped with a common oil circuit for engine and transmission, and two oil pumps. A pressure pump lubricates the engine, while a suction pump draws oil from the crankcase, using it to lubricate the transmission and the clutch. At the same time and in conjunction with a steel diaphragm, negative pressure arises in the casing, which boosts the engine power.
  • The 450 EXC’s new, more compact balancer shaft not only eliminates vibration, but also serves as the drive for the water pump. This intelligent multi-functionality contributes to the compactness and low weight of the 450 EXC’s new engine.
  • The 450 EXC’s new engine case weighs almost 2 kg less than its predecessor, although it offers better resistance to damage due to stone impact or falls. This has been achieved by using a high-strength, elastic aluminium alloy and changing from sand-casting to die-casting.

New Frame and Suspension

2012 KTM 450 EXC Six Days High Resolution Exterior
- image 435803
  • The completely revamped frame made from high-quality chrome-molybdenum steel is characterised by even greater lateral stiffness. Furthermore, it is even better at absorbing jolts introduced by the suspension system, whereby the simple handling and comfort of the 450 EXC have been further optimised.
  • The 450 EXC’s new, lighter, cast aluminium swingarm accommodates the shock absorber more centrally, in order to load the swing arms more evenly. The new, 7 mm longer PDS shock absorber with adjustable rebound and high/low-speed compression damping, and a new setting is installed more flatly, so providing even more progression.
  • The 450 EXC is equipped with the latest WP upside-down fork with wider adjustment ranges and a new setting. The sensitive responsiveness and outstanding damping of the open-cartridge fork with 48 mm outer tubes are a perfect complement for the 450 EXC’s simple handling and precision.


2012 KTM 450 EXC Six Days High Resolution Exterior
- image 435802

The 450 EXC’s new bodywork with the very slim seat and spoiler lines, plus excellent contact points, perfects the bike’s ergonomics, making handling even simpler and more precise. The longer rear fender protects the rider even more effectively from swirled up stones.

Six Days Equipment

2012 KTM 450 EXC Six Days High Resolution Exterior
- image 435811
  • Map select switch on the handlebars for selecting different engine management mappings
  • Camel SXS seat for improved long-distance comfort
  • Engine guard made of high-strength plastic for protecting engine case and frame down tubes
  • Radiator fan for optimising temperature control under extreme loads
  • CNC-machined, orange-anodised triple clamps for high-precision clamping of the fork tubes in favour of optimum sliding of the telescopic fork
  • Knock-out wheel spindle for easier removal of the front wheel
  • Full brake disc at the rear for improved heat resistance and therefore reduced pad wear
  • Rear brake disc protector for protecting the brake disc from mechanical damage
  • Quick-change brake pad securing bolts at the rear for quicker changing of brake pads without tools
  • Aluminium rear sprocket with riveted-on steel ring gear for a combination of reduced weight and increased durability
  • Wheels with black-anodised, extremely robust Giant rims and spokes with a high-quality, black tin-nickel coating.
  • The same design as the KTM factory bikes thanks to Six Days graphics, orange powder-coated frame, orange anodised triple clamps, orange anodised handlebars and anthracite anodised silencer


2012 KTM 450 EXC Six Days High Resolution Exterior
- image 435813
Engine type Single cylinder, 4-stroke
Displacement 449.3 cc
Bore/stroke 95/63.4 mm
Compression ratio 11,8:1
Starter/battery Kick- and electric starter / 12V 4Ah
Transmission 6 gears
Carburetor Keihin EFI, flow restrictor 42 mm
Control 4 V / OHC with rocker levers
Lubrication Pressure lubrication with 2 oil pumps
Gear ratios 14:36 17:32 19:28 22:26 24:23 26:21
Primary ratio 32:76
Final drive 14:52 (13:52)
Cooling Liquid cooling
Clutch Wet multi-disc clutch, Brembo hydraulics
Ignition Keihin EMS
Frame Central double-cradle-type 25CrMo4
Subframe Aluminium
Handlebar Neken, Aluminium Ø 28/22 mm
Front suspension WP-USD Ø 48 mm
Rear suspension WP-PDS shock absorber
Suspension travel front/rear 300/335 mm
Front/rear brakes Disc brake Ø 260/220 mm
Front/rear rims 1.60 x 21’’; 2.15 x 18’’ Excel
Front/rear tires 90/90-21’’; 140/80-18’’
Chain X-Ring 5/8 x 1/4"
Silencer Aluminium
Steering head angle 63.5°
Wheel base 1,482±10 mm
Ground clearance 345 mm
Seat height 970 mm
Tank capacity, approx. 9.5 l
Weight, without fuel, approx. 111 kg


Auto New Blog----"Back to the roots. The test KTM EXC 2012
After a couple of years of economic difficulty, following the great crisis that is still pursued each of us, KTM again stronger than before, boosting those who are its true origins. We are talking about off-road and even more particularly the Enduro world, where the House of Austria has made the bones, and made it what it is today."

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