 |

 |
Call
us at 888-284-4588
or 541-928-3390
to see what kind of deal we can put together for you.
MSRP prices do not include
destination charge, pre-delivery set-up, state or local, title,
registration, and license fees. |
|
|
|
2018 KTM 450 SX-F
If gold is what you're after, a 450 SX-F is what you race.
Thanks to its compact engine delivering explosive but
controllable power, it's the weapon of choice for the Red Bull
KTM Factory Team and 4-time AMA Supercross Champion, Ryan Dungey.
Precise handling from a lightweight and agile chassis matched
the arm-stretching grunt of the to a compact SOHC engine make
for an unrivaled 450-class weapon. For 2018, updated suspension
damping settings improve the SX-F's handling while revised
clutch plates, lithium-ion battery, and transmission improve
reliability. Winner \x96 line up right here. |
 |
|
UPDATED
WP AER 48 front fork with a sophisticated air spring design and
separate damping for easy adjustment to any track condition,
rider weight or skill level. A new setting improves damping.
UPDATED
rear suspension damping settings are perfectly matched to the WP
AER 48 front fork.
NEW
radiator guards provide better airflow in muddy conditions.
NEW
C4 bearing fitted to the transmission shaft for a bigger overlap
in the cases for improved reliability at high operating
temperatures.
NEW
clutch plates from nitrated steel for reduced wear on the steel
clutch basket.
NEW
stronger lithium-ion battery provides more reliable starting
while still being extremely lightweight.
NEW
MIM (Metal Inject Molded) shift star provides a stronger surface
for improved reliability.
Handlebar map switch that also activates traction control and
launch control for enhanced traction for the start, middle and
end of the race.
Handlebar clamps feature a separated lower clamp and bridge-type
upper clamp for more torsional stiffness.
A lightweight chromoly steel frame provides high torsional
rigidity with less longitudinal stiffness resulting in excellent
handling and energy absorption.
KTM's "No Dirt"; footpeg design keeps the pegs pivot from
becoming clogged, ensuring the footpeg is always in the correct
position.
Super lightweight Galfer Wave rotors, CNC machined hubs,
high-end Excel rims and Dunlop GEOMAX MX3S tires.
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.
|
 |
Technical Specs |
 |
2018 KTM 450 SX-F |
|
Engine Type: Single Cylinder,
4-Stroke
Displacement: 449.9cc
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, 44mm 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: Aluminum
Handlebar: Neken, Aluminum Ø 28/22mm
Front Suspension: WP Suspension AER 48 USD Ø 48mm
Rear Suspension: WP Monoshock 5018 BAVP DCC with Linkage
Suspension Travel Front/Rear: 310 mm / 12.2 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 Excel
Front/Rear Tires: 80/100-21"; / 120/90-19"; Dunlop MX3S
Chain: 5/8 x 1/4 in.
Silencer: Aluminum
Steering Head Angle: 26.1"
Triple Clamp Offset: 22 mm
Wheelbase: 1,485mm ± 10 mm / 58.5 ± 0.4 in.
Ground Clearance: 370mm /—.6 in.
Seat Height: 960 mm / 37.8 in.
Tank Capacity, Approx: 7 L / 1.85 gal.
Weight (without fuel), Approx: 100.6 kg/ 221.8 lbs.
|
 |
Features and Benefits |
 |
Engine
The hugely successful KTM 450 SX-F
powerhouse has extremely compact dimensions, strong performance
throughout the rev range and a low weight; this is the lightest
450 engine on the MX market. But that doesn't mean it's not a
heavyweight in terms of muscle. Fitted with a single overhead
camshaft cylinder head and the latest electronic fuel injection,
it pumps out unrivaled horsepower. With KTM's engineers working
tirelessly to increase the ultimate READY TO RACE machine, this
powerhouse has the latest engine management technology on board
and confidently shoots both amateurs and pros to the top of
their time sheets. |
|
Cylinder Head
Inside the SOHC cylinder head, an
overhead camshaft controls four ultra-lightweight titanium
valves via extremely rigid rocker arms, which are DLC-coated on
the intake side. A configuration like this allows engine speeds
of up to 11,500rpm; a baffling figure for a large displacement
thumper. New lateral brackets, made of aluminum instead of
steel, allow an efficient fixation of the engine to the frame
and contribute to the bike's featherweight feel. |
|
Crankshaft
The 450 SX-F's crankshaft
utilizes a short connecting rod, which makes for an overall
compact and lightweight engine with a snappy power delivery. A
plain big-end bearing with two force-fitted bearing shells runs
directly on the crank pin. The necessary oil feed for this
bearing is ensured by the engine's pressurized lubrication. This
design is a decisive benefit in terms of the crankshaft service
interval, which can be lengthened due to the plain bearing. So
just pin it, all day long. |
|
Crankcases and Covers
The design of the die-cast engine
cases allows for minimal weight and a very centralized shaft
configuration. This makes the engine short and compact, while
contributing to an efficient centralization of masses. The
engine covers also feature a solid surface structure, which
reduces the wear caused by the rider's boots. This way, your SX-F
will keep looking better longer. |
|
Clutch
The 450 SX-F employs the
KTM-developed DDS clutch (damped diaphragm steel) with a
wear-free steel basket and extremely heat resistant clutch
plates. This clever design employs a diaphragm spring instead of
the usual coil springs, making for considerably easier clutch
action. A diaphragm spring also leaves sufficient space for a
damping system to be integrated into the clutch hub. The goal is
traction, but durability is as well. A lighter basket, a
reworked inner hub and a pressure plate providing better oil
supply and unsurpassed cooling up the longevity of the DDS
clutch. Light operation and telepathic amounts of control are
standard with this hydraulic Brembo actuated clutch. |
|
Transmission
The KTM 450 SX-F uses a
lightweight 5-speed transmission with gear ratios that are
perfectly matched to the power delivery of its large
displacement engine. The 1st and 3rd gears are treated with a
special surface coating for better reliability. An advanced 'No
Dirt' gear shift lever design prevents mud and sand from
blocking the joint of the lever and guarantees trouble-free
shifting. All 4-stroke engines are fitted with a gear position
sensor, giving the option of different engine characteristics
for each gear. For 2018, the transmission shaft gets a stronger
shifting star and a C4 bearing that has a bigger overlap in the
case. This guarantees better reliability even in extremely tough
operating conditions. |
|
Engine Management System
The state-of-the-art Keihin
Engine Management System with electronic fuel injection features
a 44mm throttle body. Thanks to its unique injector position,
the engine's response is instantaneous. And to make life even
easier, separate systems for cold starts and idle adjustment
await you. The lightweight ECU features a unique traction and
launch control system for lightning-quick response when the gate
drops and maximum grip thanks to different maps that sync with
to the gear you're in. It's also possible to unleash an even
more powerful mapping via the handlebar map switch. |
|
Cylinder and Piston
Inside the short cylinder, with a
bore of 95mm, thumps a box-type piston made by CP. Its crown
geometry is adapted perfectly to the high-compression combustion
chamber, where its rigid structure and low weight shine. Thanks
to the low oscillating masses, the engine is as snappy as it is
strong. |
|
Balancer Shaft
The side-mounted counter balancer
does double duty also driving the water pump. Thanks to its
perfect balance and low oscillating masses, engine vibration is
kept to a minimum. |
|
E-Starter
The KTM 450 SX-F is fitted with a
unique E-starter as standard, which is a clear advantage when it
comes to crunch time in the heat of battle. A strong starter
motor made by Mitsuba will fire time and time again at the push
of a button. |
|
Cooling System
KTM's proven cooling system
routes the coolant from the cylinder head through the frame
triangle, directly to aluminum radiators made by WP. A new
filler cap system and are stiffer alloy construction increase
the durability and reliability of the cooling system. Due to
flow optimized internal circulation and CFD-calculated air
ventilation, the system is superbly efficient. In addition, well
thought-out radiator guards integrated in the front part of the
shrouds provide protection in a crash. |
|
 |
Weight
KTM engineers just love dropping
weight year after year. The result: the 2018 KTM SX models are
the slimmest, lightest dirt bikes out there. Even though the
4-strokes are equipped with an E-starter as a standard feature,
while the heavier competition still needs to be kickstarted. You
can just focus on kicking ass. |
|
Frame
The high-tech, lightweight
chrome-moly steel frame has a knack for easy handling,
outlandish rideability, precise cornering and excellent
stability. You can also count on high torsional rigidity and low
longitudinal stiffness. This results in better absorption of the
energy created from the front and rear suspension, sucking up
jumps and bumps. In short: more comfort and less rider fatigue.
Laterally attached, lightweight aluminum engine head stays (the
connection between cylinder head and frame) contribute to more
precise cornering and a reduced vibration level. The engineers
were able to pull off all that, while making their frame 2.2
pounds lighter than that of the lightest competitor on the
market. In addition, it is easier to maintain, easier to work on
and supplies more space for the tank and other components. The
bike also features an extra-light subframe made of aluminum,
which tips the scales at less than 2 pounds. |
|
Footpegs
Sophisticated 'No Dirt' footpegs
prevent clogging of the footpeg pivot, even when digging in deep
ruts. Looking for a higher riding position? Then just mount the
footpegs of the 2018 EXC models, which are 6mm higher than the
SX versions. |
|
Air Filter Box
The airbox design offers maximum
protection of the air filter while ensuring maximum airflow. The
large twin-air filter is mounted in a stiff cage, which at the
same time holds the system in place. This design is so simple,
you could still pop a fresh one in with a face full of mud.
Without tools. In seconds. |
|
Exhaust System
Competition noise limits are a
real challenge for every manufacturer. Therefore, KTM has put a
lot of effort into the development of their exhaust systems. All
4-strokes are fitted with headers that have a unique standard
feature; an additional resonator system \x96 a small chamber
connected to the pipe. All 4-strokes are fitted with a short
silencer, mounted as close to the engine as possible. You know
what that means: extra mass centralization and better
rideability. Its advanced internal design reduces the noise
sufficiently in order to sit safely below the noise limit, while
still raising the hairs on your neck. |
|
Handlebar
KTM engineers sure know how to
handle handlebars. This tapered one, made of high-strength
aluminum by NEKEN, is fixed in damped rubber mounts and has two
different positions. From 2017 onwards, the lower handlebar
clamps are separated, while on the upper side a new bridge-type
clamp guarantees more torsional stiffness. It's also easier to
replace the bar in case it gets twisted in a nasty crash. ODI
lock-on grips make grip changes easy which does not require any
wire or glue to be secured. |
|
Swingarm
The cast aluminum design offers
low weight and a perfect flex behavior. The single-component
casting process eliminates any inconsistencies and inherent weak
points created by welding. It's better looking too. |
|
Fuel Tank
A lightweight polyethylene tank
with a capacity of 1.85 gallons. The fuel tank cap has an inside
thread, which makes for easy and reliable closure. |
|
Wheels
Featuring lightweight, CNC
machined hubs and high-end Excel rims, they guarantee maximum
stability and minimal unsprung weight. The wheels are shod with
the latest Dunlop Geomax MX 3S tires for exceptional handling. |
|
 |
Shock Absorber
The WP shock absorber has been
developed with the entire frame and swingarm architecture in
mind, including the linkage system and the WP AER 48 front
forks. It features machined and black anodized components and is
a valuable, high-end product compared to roughcast reservoirs. A
new, confidence inspiring setting with improved damping
characteristics perfectly matches the front-end set-up and its
WP color scheme lets everyone know you have excellent taste in
suspension |
|
Fork
The lightweight WP AER 48 front
fork, a 48mm USD air-sprung fork developed by WP in close
collaboration with KTM, is a split fork with separate functions
for each leg. That means damping functions are on the right
side, whereas the air spring is in the left. This left leg
features a 2-chamber system with a capsuled air cartridge to
prevent loss of air pressure. Should the outer seal start to
leak, the internal cartridge pressure will keep the bike in
position. The air spring is easy to adjust to any rider weight
via a single air valve. No extra special tools are required; the
fork air pump is supplied with the bike. The right fork leg
integrates a damping cartridge that tailors to all your damping
needs. It can be adjusted to the track conditions and the
rider's preferences with a twist of a dial (compression from the
top, rebound from the bottom, 30 clicks each). Right off the
dealer floor, this fork (with reworked damping characteristics)
is more comfortable and more sensitive than ever. But you can
still hammer the hell out of it. |
|
Triple Clamp
Top quality, CNC machined triple
clamps have been a KTM trademark for years to ensure precise
handling. For 2017, the upper triple clamp specifically features
a redesign in conjunction with the new fork tubes. The rubber
damped handlebar mount has also been reworked and the lower
handlebar clamps are now separated, while on the upper side a
new bridge-type clamp guarantees more torsional stiffness and
can easily be replaced in case it gets twisted due to a crash.
In addition, an hour meter is fitted at the upper triple clamp
in order to let the rider know it's time for a service. |
|
Brakes
You can't brake any harder,
better, faster or stronger. These high-tech Brembo babies are
combined with lightweight wave discs made by Galfer. For 2017,
the rear brake features a 10mm longer brake pedal and you get
new, less aggressive brake pads all round. |
|
 |
Handlebar Map Select Switch
All 4-stroke models are equipped
with a sophisticated new multi-functional handlebar map select
switch, which does three things: Activation of the
traction control, Activation of the launch control, Selection of
two power curves (Standard or Advanced)
The traction control is a unique
feature that none of the competitors can offer. It guarantees
more efficient traction when the track conditions are less than
perfect. Push the button and reign supreme. With this map select
switch the rider can also activate the launch control, which
provides more efficient starts out of the gate so you can go for
the holeshot, time and time again. How? It simply reduces the
maximum engine speed for the very first moments of the start, in
order to give you better control. Push both buttons when the
engine idles and the EFI control lamp mounted on the upper
triple clamps will let you know you are READY TO RACE.
In addition, the map select
switch gives the rider the chance to select an alternative, more
powerful map beside the standard configuration. Welcome to the
future. |
|
Battery and Wiring Harness
A strong new lithium ion
battery breathes life into the engine and contributes to low
vehicle weight. The lightweight battery and wiring harness are
centralized in a compartment above the air filter box, allowing
the mechanic to remove the subframe without moving the
electronics. A happy mechanic is a good mechanic. |
|
E-Starter
Like all KTM 4-stroke
motorcycles, the 450 SX-F is started at the push of a button - a
priceless advantage when you're on the clock. |
|
 |
Bodywork
KTM R and D, KISKA Design and all
our factory riders had their say in shaping the plastics with
one goal: complete harmony between rider and bike. Perfect
ergonomics and contact points provide maximum comfort in
movement on the SX-F. The I-beam structures of the front and
rear fenders guarantee maximum stability and a low weight thanks
to well thought-out construction and mounting. They also stay
cleaner for longer. |
|
Graphics
A new, tailor-made kit and a
Factory orange frame. Because in this sport, champs deserve to
look the part regardless of the dirt. |
|
|
|
|
 |
|