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2013 KTM 250SX-F

2013 KTM 250SX-F

2013 KTM 250SX-F

2013 KTM 250SX-F

2013 KTM 250SX-F Review

2013 KTM 250SX-F

The KTM 250 SX-F has been an established force in the MX2 World Championship for 8 years now. And the new generation appears with a completely new, even lighter engine and an updated injection system. In other words: a performance package that will redefine the MX2 class. Together with a new frame and new bodywork, the new 2013 KTM 250 SX-F is a winning bike that dominates the MX2 class.

 

2013 KTM 250SX-F Features and Benefits

ENGINE

A completely new design, without kickstarter, in a new engine case, manufactured in a die-casting process. What’s all this for? To save weight. A new, elastic and simultaneously high-strength, aluminum alloy provides additional damage protection for the engine on the 2013 KTM 250 SX-F.

CYLINDER + PISTON

The stroke-bore ratio of the 2013 KTM 250 SX-F has been defined as somewhat shorter-stroked for the benefit of higher peak power, with the new cylinder now boasting a bore of 78 mm (3.07 in) (previously 76 mm (2.99 in)), hence providing space for larger valves. Despite the larger diameter, the box-type, forged piston is lighter in weight. This reduces the moving masses and enables higher engine speeds as well as more power.

BALANCER SHAFT

The goal was less vibration in spite of increased revs. That’s why the new KTM 250 SX-F engine also has a laterally positioned balancer shaft, which also serves as the drive wheel for the timing chain and the water pump.

CYLINDER HEAD

Those wanting to know what drives a winner to victory will find the answer here. The heart of the newly developed DOHC engine is the redesigned cylinder head with twin overhead camshafts and DLC-coated cam followers that actuate the titanium valves. Larger, flow-optimized ducts in conjunction with the more generously dimensioned intake valves (intake 32.5 mm (1.28 in), exhaust 26.5 mm (1.043 in)) guarantee 10% more gas flow and significantly improved performance. The new camshafts on the 2013 250 SX-F have also been designed (new valve timing, larger stroke) for achieving a huge increase in performance compared with the predecessor model, above all at the top end of the rev range (max. 14,000 rpm, previously 13,400 rpm).

NEW INJECTION SYSTEM

The Keihin engine management system with electronic fuel injection has been improved significantly on the 2013 KTM 250 SX-F. Even more performance has been achieved with greater air flow through a new throttle body – featuring a 44 mm (1.73 in) instead of a 42 mm (1.65 in) port – in conjunction with the new injector nozzle. The throttle position sensor (TPS) is more durable and protected from stone impact with a plastic protector. The connectors are now enclosed in rubber grommets to protect them from pressure washers. The wiring harness has been simplified and the quality of cables and connectors optimized. Additional engine characteristics can also still be activated with an optional PowerParts map-select switch that can be mounted on the handlebar.

WEIGHT

The modern frame design of lightweight, high-strength, chromoly steel section tubes guarantees an ideal mix of longitudinal and torsional stiffness, resulting not only in easy handling and precise steering behavior, but also in excellent ride stability. The four-stroke frames impress in MY 2013 with a stiffening of the frame triangle and thinner-walled down tubes. This leads to an improvement in tracking stability (increased torsional stiffness) accompanied by a reduction in weight. The engine braces to the cylinder head have also been optimized, along with their attachment to the frame. The frame bears a new color on the KTM 250 SX-F and it is still the benchmark in terms of weight and stability.

FORK

The further improved 48 mm (1.89 in) upside-down fork featuring closed-cartridge technology has been optimized with completely revamped settings for perfect harmony with the new frame and engine. The new oil is significantly more wear-resistant and guarantees more consistent damping throughout both the course of a race and the bike’s life cycle. A new lower triple clamp is 80 g (2.82 oz) lighter and, just like the upper triple clamp, CNC-machined from high quality aluminium, whereby the steering characteristics and hence the responsiveness of the fork have been noticeably improved.

SHOCK ABSORBER

The WP monoshock has been further refined for 2013 and, together with the KTM linkage system, it excels with its completely revamped settings for improved damping, more traction and even higher reserves against bottoming out. Rebound and compression damping (high and low speed) can be adapted individually to the track and rider in no time at all.

WHEELS

The wheels are fitted with lightweight, CNC-machined hubs and high-end EXCEL rims, plus new, black-coated spokes with aluminum nipples, guaranteeing the highest levels of stability while keeping weight to a minimum. The Dunlop GEOMAX MX51 tires stand for excellent traction and performance. For the benefit of greater ride stability on the KTM 250 SX-F, the rear axle has been increased in diameter from 20 mm (0.79 in) to 25 mm (0.98 in).

BODYWORK

Not only visually does the completely revamped bodywork indicate that the 2013 model year represents a new SX generation. Above all, the ergonomics and function of the plastics have been designed in such a way that the whole chassis and engine package forms a perfect harmony with the rider down to the very last detail. The fuel tank and spoiler have been restyled along with the airbox cover and the front fender, including the front number plate. A particular highlight is the new front fender, which has no ribbing whatsoever on the inside, thereby preventing mud build-up. A pioneering structure and improved attachment of the fender to the triple clamp result in up to 50% greater lateral stiffness.

 

 

 

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2013 KTM 250SX-F – USA Specifications/Technical Details
US MSRP Price: See dealer for pricing in USD

ENGINE
Design 1-cylinder 4-stroke engine, water-cooled
Displacement 249.91 cm³ (15.2505 cu in)
Bore 78 mm (3.07 in)
Stroke 52.3 mm (2.059 in)
Starting aid E-Starter
Gearbox
Engine lubrication Pressure circulation lubrication with two Eaton pumps
Primary transmission 24:73
Secondary ratio 13:48
Cooling Water cooling, permanent circulation of coolant by water pump
Clutch Multidisc clutch in oil bath/hydraulically activated
Ignition Contactless controlled fully electronic ignition with digital ignition adjustment
CHASSIS
Frame Central tube frame made of chrome molybdenum steel tubing
Fork WP Suspension Up Side Down 4860 MXMA CC
Shock absorber WP Suspension 5018 BAVP DCC
Suspension travel Front 300 mm (11.81 in)
Suspension travel Rear 317 mm (12.48 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°
Wheelbase 1,495±10 mm (58.86±0.39 in)
Ground clearance, unloaded 375 mm (14.76 in)
Seat height, unloaded 992 mm (39.06 in)
Total fuel tank capacity, approx. 7.5 l (1.98 US gal)
Super unleaded (ROZ 95/RON 95/PON 91)
Weight without fuel, approx. 104.2 kg (229.7 lb.)

 

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2013 KTM 250SX-F – Canadian Specifications/Technical Details
Canada MSRP Price: See dealer for pricing in CDN

ENGINE
Design 1-cylinder 4-stroke engine, water-cooled
Displacement 249.91 cm³ (15.2505 cu in)
Bore 78 mm (3.07 in)
Stroke 52.3 mm (2.059 in)
Starting aid Electric starter
Gearbox
Engine lubrication Pressure circulation lubrication with two Eaton pumps
Primary transmission 22:68
Secondary ratio 13:48
Cooling Water cooling, permanent circulation of coolant by water pump
Clutch Multidisc clutch in oil bath/hydraulically activated
Ignition Contactless controlled fully electronic ignition with digital ignition adjustment
CHASSIS
Frame Central tube frame made of chrome molybdenum steel tubing
Fork WP Suspension Up Side Down 4860 MXMA CC
Shock absorber WP Suspension 5018 BAVP DCC
Suspension travel Front 300 mm (11.81 in)
Suspension travel Rear 330 mm (12.99 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°
Wheelbase 1,495±10 mm (58.86±0.39 in)
Ground clearance, unloaded 375 mm (14.76 in)
Seat height, unloaded 992 mm (39.06 in)
Total fuel tank capacity, approx. 7.5 l (1.98 US gal)
Super unleaded (ROZ 95/RON 95/PON 91)
Weight without fuel, approx. 102.8 kg (226.6 lb.)

Prices and specifications subject to change without notice.

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2013 KTM 250SX-F – UK/Europe Specifications/Technical Details
UK/European MSRP Price: £6,445.00 GBP.

ENGINE
Design Single-cylinder, 4-stroke, spark-ignition engine, liquid-cooled
Displacement 249.91 cm³
Bore 78 mm
Stroke 52.3 mm
Starting aid Electric starter
Transmission
Engine lubrication Forced oil lubrication with 2 Eaton pumps
Primary gear ratio 22:68
Final drive 13:48
Cooling system Liquid cooling system, continuous circulation of cooling liquid with water pump
Clutch Wet multi-disc clutch / hydraulically operated
Ignition system Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment
CHASSIS
Frame Central tube frame made of chrome molybdenum steel tubing
Forks WP Suspension Up Side Down 4860 MXMA CC
Shock absorber WP Suspension 5018 BAVP DCC
Suspension travel Front 300 mm
Suspension travel Rear 330 mm
Brake system Disc brakes, brake calipers on floating bearings
Brake discs – diameter Front 260 mm
Brake discs – diameter Rear 220 mm
Chain 5/8 x 1/4″
Steering head angle 63.5°
Wheel base 1,495±10 mm
Ground clearance (unloaded) 375 mm
Seat height (unloaded) 992 mm
Total fuel tank capacity approx. 7.5 l
Unleaded premium fuel (95 RON)
Weight without fuel approx. 102.8 kg

Prices and specifications subject to change without notice.

 

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2013 KTM 250SX-F – Australian Specifications/Technical Details
AU MSRP Price: See dealer for Pricing in AUD

Engine
Engine Type1-cylinder 4-stroke spark-ignition engine, liquid-cooled
Displacement249.9cm³
Bore / Stroke78/52.3mm
Compression Ratio13.9:1
Starter / BatteryElectric Start / 12V 3Ah
Transmission6 gear, claw shifted
Fuel ManagementKeihin EFI, throttle body 44mm
Control4 V / DOHC with finger followers
LubricationPressure lubrication with 2 oil pumps
Primary Ratio24:73
Final Drive13:50
CoolingLiquid cooling system
ClutchWet multi-disc clutch / hydraulically operated
IgnitionKeihin EMS

Chassis
FrameCentral tube frame of chrome molybdenum steel tubing
Sub-Frame aluminium
HandlebarRenthal aluminium
Front SuspensionWP Suspension USD 4860 MXMA CC
Rear SuspensionWP Suspension 5018 BAVP DCC
Suspension Travel – Front / Rear300/330mm
Front / Rear BrakesDisc brake 260mm front / 220mm rear
Front / Rear Rims1.60 x 21″ / 2.15 x 19″ Excel
Front / Rear Tyres80/100-21″ / 100/90-19″
Chain5/8 x 1/4″
Silenceraluminium
Steering Head Angle63.5º
Wheel Base1495 ± 10mm
Ground Clearance375mm
Seat Height992mm
Tank Capacity approx.7.5l
Weight Without Fuel approx.102.9kg

Specifications, features and prices to change by manufacturer without notice. All information correct as of posted date.