Anybody can say that they can ride an endure bike, but not everyone can stake claim to being able to handle something like the KTM 300 EXC.

The two-stroke bike maven is a real torque-wonder, possessing unbelievable power stemming from its 300cc 1-cylinder 2-stroke engine. Combine this scintillating piece of engine performance with a revamped chassis and you have an endure bike that’s been prepped to get down and dirty with the best of its class in the market.

Making the 300 EXC even more attractive is the fact that it’s versatility allows it to be an ideal ride for a variety of purposes, whether it’s the next cross-country or hardcore enduro race. It comes equipped with the latest WP upside-down fork with wider adjustment ranges and a new setting. The sensitive responsiveness of this set-up and outstanding damping of the open-cartridge fork with 48 mm (1.89 in) outer tubes makes for a perfect complement for the bike’s excellent handling characteristics.

On top of all that, the 300 EXC also comes with new wheels carrying CNC-machined hubs, Excel rims, zinc/nickel-coated spokes, and aluminum nipples, making for a light excellent handling machine that’s fit to be ridden in dirt tracks anywhere and at anytime.

Find out more about the KTM 300 EXC after the jump.

  • 2012 KTM 300 EXC
  • Year:
  • Make:
  • Model:
  • Engine:
    Single cylinder, two-stroke
  • Transmission:
    6 gear, claw shifted
  • Energy:
    Carburettor. Keihin PWK 36 S AG
  • Displacement:
    293.00 ccm (17.88 cubic inches) L


2012 KTM 300 EXC Drivetrain
- image 435370
  • The understandable technology of the two-stroke engine has indisputable advantages, including a high power/displacement ratio and low weight. In terms of power-to-weight ratio, the 300 EXC is practically unbeatable thanks to the latest facelift. Unrivaled performance and playful handling are the results.
  • Together with the redesigned airbox and flow-optimized intake flange between airbox and carburetor, the new cylinder with low valve timing ensures even better charging with fresh gas. This results in even freer revving and even more power in all rev ranges for the liquid-cooled, two-stroke machine.
  • The responsiveness of the high-torque two-stroke machine can be varied in three stages by replacing springs in the TVC exhaust controller. The rider of the 300 EXC can also choose between two different ignition curves by means of a plug or an optional switch.


2012 KTM 300 EXC High Resolution Exterior
- image 435371

The 300 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.

New Frame

2012 KTM 300 EXC High Resolution Exterior
- image 435363

The completely revamped frame made from high-quality chrome-molybdenum steel is characterized by even greater lateral stiffness. It is also even better at absorbing jolts introduced by the suspension system, whereby the playful handling and comfort of the 300 EXC have been further optimized.

New Swingarm, New PDS and New Setting

2012 KTM 300 EXC High Resolution Exterior
- image 435368

The 300 EXC’s new, lighter, cast aluminum swingarm accommodates the shock absorber more centrally, in order to load the swing arms more evenly. The new, 7 mm (0.28 in) 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.


2012 KTM 300 EXC High Resolution Exterior
- image 435372
Design 1-cylinder 2-stroke engine, water-cooled, with reed intake and exhaust control
Displacement 293 cm³ (17.88 cu in)
Bore 72 mm (2.83 in)
Stroke 72 mm (2.83 in)
Starting aid Kickstarter and electric starter
Transmission 6 gear, claw shifted
Primary gear 26:72
Final drive 14:50 (13:50)
Clutch Wet multi-disc clutch / hydraulically operated
Ignition system Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan
Frame Central tube frame made of chrome molybdenum steel tubing
Forks WP Suspension Up Side Down 4860 MXMA PA
Shock absorber WP Suspension PDS 5018 DCC
Suspension travel Front 300 mm (11.81 in)
Suspension travel Rear 335 mm (13.19 in)
Brake system Disc brakes, brake calipers on floating bearings
Brake discs - diameter Front 260 mm (10.24 in)
Brake discs - diameter Rear 220 mm (8.66 in)
Chain 5/8 x 1/4"
Steering head angle 63.5°
Wheel base 1,482±10 mm (58.35±0.39 in)
Ground clearance (unloaded) 355 mm (13.98 in)
Seat height (unloaded) 960 mm (37.8 in)
Total fuel tank capacity approx. 9.5 l (2.51 US gal)
Unleaded premium fuel, mixed with 2-stroke engine oil (1:60)
Weight without fuel approx. 104 kg (229 lb.)


KTM PartsOnline----"Whether in the Extreme Enduro or the E2 World Championship, the 300 EXC is the ultimate victory machine. Built with the ideal combination of performance and weight, the serial Erzberg winner is the enduro to beat when the going gets really tough. Improved performance mounted in a completely revamped chassis, with a new frame, upgrades the lightest enduro in the E2 class even further. Proof on two wheels that the two-stroke machines from KTM are also to be reckoned with in future."

Kirby Garlitos
Automotive Aftermarket Expert -
Kirby’s first exposure into the world of automobiles happened when he caught Knight Rider on television as a five-year old boy. David Hasselhoff didn’t leave much of an impression on him (that happened later on in Baywatch), but KITT certainly did. To this day, Kirby remains convinced that he will one day own a car with the same ‘spirit’ as the original KITT (not the 2008 monstrosity). He doesn't know when that will be, but until then, he’s committed to expressing his love for KITT, and all cars for that matter, here at TopSpeed.  Read More
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