Motor parts

2012 KTM 450 SMR
RACING THOROUGHBRED
The compact single’s core is a high tech, DOHC cylinder head with titanium valves and DLC coated followers.
That means an ultra-wide power band, a high redline and plenty of power from low engine speeds all the way to the maximum. 2012 KTM 450 SMR Features and Benefits
- DO HC 4V engine with APTC anti-hopping clutch, electric starter and specially geared 5-speed gearbox
- New, ultra-light chrome-molybdenum steel frame with bolt-on aluminium subframe
- Weight reduced cast aluminium swingarm with linkage system
- Fully adjustable WP suspension with special racing set-up
- State-of-the-Art racing laced wheels with OEM slicks
- Ultra sticky Dunlop slicks
- Radial Magura four-pot racing front calliper
- Dynamic, elaborate in-mould graphics
ENGINE SINGLE CYLINDER, 4-STROKE ENGINE • DISPLACEMENT 449.3 CC
STARTER ELECTRIC STARTER • TRANSMISSION 5 GEARS • TANK CAPACITY APPROX. 8.2L
WEIGHT (READY TO RACE) APPROX. 111.5 KG (WITHOUT FUEL)

2012 KTM 450 EXC Review
Above all, the new chassis and redesigned OHC engine widen the 450 EXCs lead over the competition by a further bike length. BODYWORK
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. The 450 EXCs new engine is equipped with a common oil circuit for engine and transmission, and two oil pumps. NEW BALANCER SHAFT
This intelligent multi-functionality contributes to the compactness and low weight of the 450 EXCs new engine.
NEW ENGINE CASE
Thanks to the new, lighter connecting rod and the new, lighter piston, they managed to achieve minimum vibration, while maximising engine-speed strength.
The 450 EXCs cylinder has been further developed especially for the new engine configuration. The new, 15 % lighter forged piston minimises reciprocating weight and optimises durability at high engine speeds. New, nitrided piston rings ensure highest levels of resistance to wear.
All ports and the combustion chamber have been redesigned in the OHC cylinder head of the 450 EXCs new engine. NEW CLUTCH
NEW FRAME
The 450 EXCs new, lighter, cast aluminium swingarm accommodates the shock absorber more centrally, in order to load the swing arms more evenly.