OIL CIRCUIT

The engine features two oil pumps and a common oil circuit. A pressure pump provides reliable lubrication for the crankshaft, piston, counter balance shaft and valve train, while cooling the ignition and lubricating the clutch. A scavenger pump draws oil from the crankcase to lubricate the transmission. For MY 2015 the oil pump suction screen has new O-rings that increase durability under extreme conditions and over time.

ENGINE MANAGEMENT SYSTEM (EMS)

The Engine Management System by Keihin with electronic fuel injection and a 42mm throttle body delivers a spontaneous response and maximum engine performance. An oil-cooled 196W AC alternator provides sufficient energy for the fuel injection, lighting and other electrical loads.

CRANKSHAFT

The crankshaft with a stroke of 63.4 mm and ultra-lightweight con rods are made by Pankl from special, high-tensile strength steel. They have a plain bearing in the big end. The previous needle bearing is replaced with two force-fitted XCF-W shells that run directly on the crank pin. This design enhances the engine's durability, allowing to lengthen the crankshaft service interval.

STARTER

The 450 XC-W is equipped with a kickstarter as well as an electric starter as standard. The electric starter is well protected behind the cylinder.

COUNTER BALANCER

In order to balance the mass-forces, the engine uses a counter balance shaft which doubles as a water pump drive.

CYLINDER HEAD

The cylinder head is equipped with a single overhead camshaft. It activates two titanium intake valves and two steel exhaust valves. The weight optimized valve train leads to low friction for improved performance as well as low engine braking action.

TRANSMISSION

The proven 6-speed gear box is distinguished by easy and precise shifting.

DDS CLUTCH

The single-piece basket of the DDS (Damped Diaphragm Steel) clutch is machined from solid high-tensile steel in one piece together with the primary drive gear. This process provides unbeatable reliability and contributes to the narrow engine width due to its compact rivet-less design. Additionally, this construction allows the use of thin steel linings which also contribute to the compact clutch dimensions. The diaphragm spring makes it possible to implement an additional rubber damping system inside the clutch hub, guaranteeing reliability for the transmission and good traction. In addition, a stronger inner hub further increases stability. Finally, the hydraulic clutch mechanism by Brembo in conjunction with the diaphragm spring guarantees a very light operation and good controllable modulation of the clutch.

PISTONS

The lightweight, forged bridged box-type piston shares its high performance piston rings with the 450 SX-F.

ENGINE

Developed for tough enduro racing, the SOHC engine with 449.3cc is distinguished by an extremely compact design, easy maintenance and an excellent durability at a minimal weight. Together with the Keihin EFI system, they provide unrivaled enduro specific performance and rideability.
 

TRIPLE CLAMPS

The triple clamps have been specifically designed for Enduro use and ensure precise handling on rough terrain by supporting the flex characteristics of the fork. This gives the rider the best possible feedback from the front-end of the machine to increase his or her confidence and overall speed.

GRIPS

New, softer two-compound grips are used on MY 2015 XC-W models for increased comfort and less stress on the rider’s hands.

WHEELS

The XC-W’s feature new high-quality black anodized Giant rims with black spokes, that are mated to CNC-machined hubs and lightweight silver aluminum nipples for maximum stability at minimum weight. The XC-W’s feature new Dunlop GEOMAX AT81 tires.

SUSPENSION/DAMPING

The XC-W models feature WP suspension, which is specifically designed for Enduro racing and ensures maximum traction comprised with plenty of comfort. As expected, the compression and rebound damping can be adjusted to suit racing conditions and rider preference as well as separate high and low speed shock compression adjustments.

BODYWORK

The KTM designer's focus was to achieve complete ergonomic harmony between rider and bike for a more stable ride and effortless movement on the bike. Adding to the improvements is a high-quality seat foam core to maximize comfort and durability. With the new front fender, the designers omitted ribbing on the inside to reduce mud and dirt buildup while increasing rigidity over the previous component by 50%.

HANDLEBAR

All XC-W models are fitted with the super strong, tapered Neken handlebar made of high tensile strength aluminum alloy. The proven standard KTM mount allows to fix the handlebar in four different positions. 2015 sees the introduction of hand guards made of a new 2-component polymer for more durability and effective hand protection.

AIRBOX

The redesigned airbox offers maximum protection of the air filter against soiling while ensuring maximum airflow for top performance. The new airbox covers are produced in a 2-component process and with new inmould graphics. The left cover's mount and fitment have been improved further to allow an even quicker change of the Twin Air filter which is held more securely with an optimized latch. The filter can still be changed without using tools. In addition, two extra flaps on the cover allow to secure it with bolts if desired.

FRAME

The XC-W’s chassis is second to none and for 2015 the bikes will feature the striking Factory orange usually seen only on KTM’s race team machines. The modern and lightweight frame design with exceptional quality and performance created with by WP Performance Systems is made of lightweight, high strength chromoly steel sections. Not only does it provide easy handling and precise cornering, but also outstanding stability.

SPEEDOMETER

A new MAE speedometer has been included on the MY 2015’s with a clean, minimalistic and integrated design. This includes the warning lights in a tidy, single unit with clear and more readily available information