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Blueprint for 2018 KTM four-strokes?

KTM often reveals its latest technology just before the US Supercross season with a couple of Factory Edition bikes that are legal for AMA racing – and this year is no different. The 450 and 250SXF Factory Editions will be the basis of the bikes raced by Ryan Dungey and Marvin Musquin in the 450 Red Bull factory team and the Troy Lee 250 squad.
Available in the US – with no news yet as to UK or European availability – KTM has not revealed full detailed spec on what’s exactly new apart from tweaks to the forks and shock. The bikes do feature lots of bolt-ons from the Powerparts range. Here is what KTM has to say:

2017 450SXF Factory Edition

A compact SOHC engine effectively delivers explosive power to the ground, thanks to traction control, launch control and a two-position map switch. Updated WP AER 48 forks and rear shock elevate the 450 SX-F’s already-stellar handling, while a titanium Akrapovic muffler sheds weight. Top it all off with CNC-machined orange anodized triple clamps, D.I.D. DirtStar rims and Red Bull KTM Factory Racing replica graphics and you have a recipe for success at any level of racing.

ktm-450-sx-f-factory-edition-my-2017_right

Highlights are:
UPDATED WP AER 48 front fork with a new air seal, air piston and rebound spring on the air leg, along with a new piston on the damping side for improved performance.
UPDATED settings for both the WP AER 48 front fork and rear shock.
Handlebar map switch that also activates traction control and launch control for enhanced traction for the start, middle and end of the race.
Orange anodized CNC-machined triple clamps for optimized clamping force that is tuned to the WP AER 48 front fork for exceptional handling.
A lightweight chromoly steel frame provides high torsional rigidity with tuned longitudinal stiffness resulting in excellent handling and energy absorption.
KTM’s “No Dirt” footpeg design keeps the peg’s pivot from becoming clogged, ensuring the footpeg is always in the correct position.
Super lightweight Galfer Wave rotors, CNC-machined hubs, high-end D.I.D. DirtStar rims and Dunlop GEOMAX MX3S tires.
Akrapovic titanium slip-on muffler is lighter than the standard 450 SX-F muffler.
Airbox and filter design provides maximum performance with fast “no tools” air filter changes.
“No Dirt” shift lever prevents dirt from fouling the lever joint to ensure proper shifting in any condition.
Factory replica graphics, orange powdercoated frame, orange anodized sprocket and front disk guard complete the READY TO RACE 2017 450 SX-F FACTORY EDITION.

Engine Type: Single Cylinder, 4-Stroke
Displacement: 449.9 cc
Bore/Stroke: 95.0/63.4 mm
Compression Ratio: 12.7.5:1
Starter/Battery: Electric Starter/12V, 2.2 Ah
Transmission: 5 Gears
Fuel System: Keihin EFI, 44 mm Throttle Body
Lubrication: Pressure lubrication with 2 oil pumps
Primary Ratio: 31:76
Final Drive: 13:48
Cooling: Liquid Cooling
Clutch: Wet Multi-Disc DDS-Clutch, Brembo Hydraulics
Ignition: Keihin EMS
Frame: Central Double-Cradle Type 25CrMo4 Steel
Subframe: Aluminium
Handlebar: Neken, Aluminium Ø 28/22 mm
Front Suspension: WP Suspension AER 48 USD Ø 48 mm
Rear Suspension: WP Monoshock 5018 BAVP DCC with Linkage
Suspension Travel Front/Rear: 300 mm/11.81 in; 300 mm/11.81 in
Front/Rear Brakes: Disc Brake 260 mm/10.24 in; 220 mm/8.66 in
Front/Rear Rims: 1.60x 21, 2.15 x 19 D.I.D. DirtStar
Front/Rear Tires: 80/100-21”; 120/90-19” Dunlop GEOMAX MX3S
Chain: 5/8 x 1/4 in
Silencer: Akrapovic Titanium
Steering Head Angle: 26.1º
Triple Clamp Offset: 22 mm
Wheelbase: 1,485 mm ± 10 mm/58.5 ± 0.4 in
Ground Clearance: 370 mm/14.6 in
Seat Height: 960 mm/37.8 in
Tank Capacity: 7 L/1.85 gal
Weight (without fuel): 100.4 kg/221.3 lbs

2017 250SXF Factory Edition

The KTM 250 SX-F FACTORY EDITION is the lightest and best performing bike in its class and is the bike of choice for the Troy Lee Designs/Red Bull/KTM team. The combination of a powerful and torquey engine in a lightweight and agile chassis is the key to its success. A powerful – yet compact – DOHC engine, refined WP AER 48 forks, orange anodized triple clamps, an FMF titanium muffler, launch control and D.I.D. DirtStar rims make for a READY TO RACE machine that has no equal.

ktm-250-sx-f-factory-edition-my-2017_rr

Highlights:
UPDATED WP AER 48 front fork with a new air seal, air piston and rebound spring on the air leg, along with a new piston on the damping side for improved performance.
UPDATED settings for both the WP AER 48 front fork and rear shock.
Handlebar map switch that also activates traction control and launch control for enhanced traction for the start, middle and end of the race.
Orange anodized CNC-machined triple clamps for optimized clamping force that is tuned to the WP AER 48 front fork for exceptional handling.
A lightweight chromoly steel frame provides high torsional rigidity with tuned longitudinal stiffness resulting in excellent handling and energy absorption.
KTM’s “No Dirt” footpeg design keeps the peg’s pivot from becoming clogged, ensuring the footpeg is always in the correct position.
Super lightweight Galfer Wave rotors, CNC-machined hubs, high-end D.I.D. DirtStar rims and Dunlop GEOMAX MX3S tires.
FMF titanium slip-on muffler is lighter than the standard 250 SX-F muffler.
Airbox and filter design provides maximum performance with fast “no tools” air filter changes.
“No Dirt” shift lever prevents dirt from fouling the lever joint to ensure proper shifting in any condition.
Troy Lee Designs/Red Bull/KTM Factory Racing Team replica graphics, orange powder-coated frame, orange anodized sprocket and front disk guard complete the READY TO RACE 2017 KTM 250 SX-F FACTORY

Engine Type: Single Cylinder, 4-Stroke
Displacement: 249 cc
Bore/Stroke: 78.0/52.3 mm
Compression Ratio: 14.4:1
Starter/Battery: Electric Starter/12V, 2.2 Ah
Transmission: 5 Gears
Fuel System: Keihin EFI, 44 mm Throttle Body
Lubrication: Pressure lubrication with 2 oil pumps
Primary Ratio: 24:73
Final Drive: 13:50
Cooling: Liquid Cooling
Clutch: Wet Multi-Disc CSS-Clutch, Brembo Hydraulics
Ignition: Keihin EMS
Frame: Central Double-Cradle Type 25CrMo4 Steel
Subframe: Aluminium
Handlebar: Neken, Aluminium Ø 28/22 mm
Front Suspension: WP Suspension AER 48 USD Ø 48 mm
Rear Suspension: WP Monoshock 5018 BAVP DCC with Linkage
Suspension Travel Front/Rear: 300 mm/11.81 in; 300 mm/11.81 in
Front/Rear Brakes: Disc Brake 260 mm/10.24 in; 220 mm/8.66 in
Front/Rear Rims: 1.60x 21, 2.15 x 19 D.I.D. DirtStar
Front/Rear Tires: 80/100-21”; 100/90-19” Dunlop GEOMAX MX3S
Chain: 5/8 x 1/4 in
Silencer: FMF titanium
Steering Head Angle: 26.1º
Triple Clamp Offset: 22 mm
Wheelbase: 1,485 mm ± 10 mm 58.5 ± 0.4 in
Ground Clearance: 370 mm/14.6 in
Seat Height: 960 mm/37.8 in
Tank Capacity: 7 L/1.85 gal
Weight (without fuel): 98.5 kg/217.2 lbs

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