2021 KTM 450 SX-F : POWER SUPREMACY.
Introducing the 2021 KTM 450 SX-F…
The championship winning KTM 450 SX-F is a proven formula that is the industry benchmark. For 2021, this machine continues to deliver superior performance and easy handling. It features an extremely compact, single overhead camshaft cylinder head and together with the efficient electronic fuel injection, it pushes out an unrivalled 63hp in the most effective way possible. The KTM 450 SX-F is simply the fastest Motocross bike out on the track.
2021 KTM 450 SX-F Totalmotorcycle.com Key Features
2021 KTM 450 SX-F Totalmotorcycle.com Features and Benefits
When it comes to power delivery and performance, the exhaust on all 4-stroke models plays a key role and packs a punch that is hard to beat. It features a model-specific header pipe with an advanced resonator called FDH (Flow Design Header), which is a small chamber around the pipe. The design allows the exhaust to be disassembled without removing the shock absorber and also provides better access to the shock. The aluminum sleeve, end cap and internal design of the silencer allow for slimmer ergonomics, making the bike feel narrower, without compromise to regulatory noise limits.
The 450 cc engine is the ultimate powerhouse when it comes to KTM’s competitive motocross range. Its compact, lightweight design features a single overhead camshaft cylinder head, fueled by the latest electronic injection system. This enables the impressive power to be distributed extremely efficiently throughout the rev range. Even with its super-beneficial electric starter, this model is still the lightest 450 cc engine on the MX market
The airbox on the KTM 450 SX-F ensures optimal flow dynamics, and together with its intake snorkels, leads to maximum power and quick throttle response. Despite the obvious performance advantages, the design also offers maximum protection against soiling of the air filter. The large Twin-Air air filter is mounted on a cleverly designed stiff cage that minimizes incorrect installation. As found on previous models, filter maintenance is quick and easy and does not require tools – a standard, original feature from KTM. Every SX-F comes with an additional PowerParts airbox cover (in the by-pack) featuring additional air intake holes for higher engine performance, meaning that the the airbox can be customized for different engine characteristics or to suit track conditions.
As with the entire KTM SX range, the frame on the KTM 450 SX-F is professionally crafted from hydroformed chromium molybdenum steel tubes that are robot welded to ensure the highest levels of consistent quality. The precisely calculated stiffness of the frame delivers responsive handling and works perfectly with the suspension to provide excellent agility and high-speed stability. All 2020 KTM SX frames feature a highly durable powder coating and come with standard frame protectors. The subframe is made from lightweight aluminum and provides great feeling for the rider, as well as easy movement across the seat
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 2019 EXC models, which are 6 mm higher than the SX versions.
All KTM SX models feature a seat that perfectly matches the range’s dynamic performance-oriented ergonomics. The seat cover features silicone strips that provide better feel and grip for the rider. The seat is conveniently fixed to the bike using one long, lateral screw
HANDLEBAR MAP SELECT SWITCH
With one touch of a button, the map switch gives the rider the chance to select between a standard map setting and a more aggressive map for loamy, high grip dirt conditions. This is particularly useful for changing track conditions or for a rider that is looking for more control as he begins to get tired.
All SX-F models feature a capable, super lightweight 2 Ah Lithium-Ion starter battery, ensuring quick and effective starting of the engine, especially in cold weather conditions. The voltage regulator and condenser, as well as all the electrical components, are packaged in a common area below the seat, making the entire system compact and reliable
2021 KTM 450 SX-F – Totalmotorcycle.com International Specifications/Technical Details
US MSRP Price: $ 10199 USD
Canada MSRP Price: $ 11699 CDN
Europe/UK MSRP Price: £ 8399 (On The Road inc 20% Vat)
- STARTERElectric starter
- STROKE63.4 mm
- BORE95 mm
- CLUTCHWet, DDS multi-disc clutch, Brembo hydraulics
- DISPLACEMENT449.9 cm³
- EMSKeihin EMS
- DESIGN1-cylinder, 4-stroke engine
- WEIGHT (WITHOUT FUEL)100 kg
- TANK CAPACITY (APPROX.)7 l
- FRONT BRAKE DISC DIAMETER260 mm
- REAR BRAKE DISC DIAMETER220 mm
- FRONT BRAKEDisc brake
- REAR BRAKEDisc brake
- CHAIN5/8 x 1/4″
- FRAME DESIGNCentral double-cradle-type 25CrMo4 steel
- FRONT SUSPENSIONWP XACT-USD, Ø 48 mm
- GROUND CLEARANCE370 mm
- REAR SUSPENSIONWP XACT Monoshock with linkage
- SEAT HEIGHT950 mm
- STEERING HEAD ANGLE63.9 °
- SUSPENSION TRAVEL (FRONT)310 mm
- SUSPENSION TRAVEL (REAR)300 mm
Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).