2026 KTM SX 450 -F FACTORY EDITION Single-Cylinder 449.9

Price:
$13,699.00
  • Year: 2026
  • Make: KTM
  • Model: SX
  • Condition: New
Description

2026 KTM 450 SX-F Factory Edition

TEARING AHEAD

The 2026KTM 450 SX-F FACTORY EDITION is a limited-run machine built to erase the final gap between stock and factory, delivering true READY TO RACE performance with elite-level upgrades. Designed for riders chasing every tenth of a second, it features race-proven componentry straight from the top level of motocross competition. For 2026, this includes the industry-leading WP XACT PRO 7548 front fork and WP XACT PRO 8950 rear shock fitted as standard.

Features may include:

Before The Gate
  • Factory-level hardware

The KTM 450 SX-F FACTORY EDITION raises the bar with a factory-level suspension upgrade that redefines READY TO RACE performance. Fitted as standard with the WP XACT PRO 7548 front fork and WP XACT PRO 8950 rear shock, this exclusive setup delivers unmatched precision, comfort, and control. The 48 mm WP XACT PRO 7548 fork features a closed-cartridge design with a unique valve system and friction-optimized internals, offering pinpoint response, rock-solid bottoming resistance, and consistent damping lap after lap. On the rear, the WP XACT PRO 8950 shock incorporates Supertrax technology and a linked damping system to maximize traction, smooth out harsh impacts, and boost rider confidence in every section of the track.

The strongest start
  • More Usable Power

When the gate drops you need to be the first to off the line in a bid to rule (and make) the roost. The 2026 KTM 450 SX-F FACTORY EDITION boasts one of the strongest and most versatile 4-stroke powerplants in the pits, with its SOHC engine proving to be the perfect example of advanced engineering. With class-leading peak power output, and an overall engine weight of only 59 lb (26.8 kg), you'll leave the competition with more than a little mud on the face. The 2026 KTM 450 SX-F FACTORY EDITION features an updated Akrapovic muffler, intake, and mapping, which increases rideability while meeting the latest FIM and AMA sound regulations. Crafted from lightweight titanium, the muffler's premium finish reflects its high-performance design -- and is available exclusively on this limited-run model.

Establishing the edge
  • Absolute Control

The KTM 450 SX-F FACTORY EDITION frame is built for riders who demand sharp handling and full control. Its refined flex characteristics let you carve berms, launch jumps, and tackle technical terrain with confidence. A streamlined rear shock mount boosts stability and traction, while optimized engine mounts and wall thickness ensure a balanced, responsive feel from front to back.

Tackling the tough
  • New WP PRO Suspension

The 2026 KTM 450 SX-F FACTORY EDITION now features the class-leading WP XACT PRO 7548 fork and WP XACT PRO 8950 rear shock. This means you'll be lining up at the setting gate with the ultimate set-up, reduced weight, pristine weight distribution and acute responsiveness.

Pacing the race
  • Connectivity Unit Offroad

The Connectivity Unit Offroad - or CUO for short - comes as standard on the KTM 450 SX-F FACTORY EDITION. It offers a wide range of functionalities and adjustability options via the KTMconnect app. The CUO gives you a new insight into your riding, allows you to alter your engine behavior, and even provides you with optimized suspension settings based on individual preferences and riding conditions. Get extra 'Factory'

Options and Standard Features
Basic Information
  • Year: 2026
  • Make: KTM
  • Model: SX
  • Trim: 450 -F FACTORY EDITION
  • Stock Number: KTM1105D2
  • Condition: New
  • Type: Off-Road
  • Title: Clean
  • Color: Orange
Brakes
  • Brake Brand Name: Brembo
  • Front Brake: Hydraulic Disc
  • Front Brake Diameter (in): 10.2
  • Front Brake Diameter (mm): 260
  • Rear Brake: Hydraulic Disc
  • Rear Brake Diameter (in): 8.7
  • Rear Brake Diameter (mm): 220
Chassis & Suspension
  • Frame: Chromium Molybdenum
  • Front Adjustable Fork Pre-Load
  • Front Adjustable Rebound Damping
  • Front Suspension Brand Name: WP XACT
  • Front Suspension Size (in): 1.9
  • Front Suspension Size (mm): 48
  • Front Suspension Type: Inverted Fork
  • Front Travel (in): 12.2
  • Front Travel (mm): 310
  • Number Rear Shock Absorbers: 1
  • Rear Adjustable Rebound Damping
  • Rear Adjustable Shock / Spring Pre-Load
  • Rear Suspension Brand Name: WP XACT
  • Rear Suspension Material: Aluminum
  • Rear Suspension Type: Twin Sided Swing Arm
  • Rear Travel (in): 11.8
  • Rear Travel (mm): 300
Comfort
  • Adjustable Handlebars
Drivetrain
  • Number Of Speeds: 5
  • Primary Drive (Rear Wheel): Chain
  • Transmission: Manual
  • Primary Drive (Engine / Transmission): Gear
  • Transmission Final Drive Ratio: 3.69
  • Transmission Gear Ratio (1): 2
  • Transmission Gear Ratio (2): 1.67
  • Transmission Gear Ratio (3): 1.4
  • Transmission Gear Ratio (4): 1.18
  • Transmission Gear Ratio (5): 1
Engine
  • Bore (in): 3.74
  • Bore (mm): 95
  • Carburetion Brand: Keihin
  • Carburetion Type: Fuel Injected
  • Compression Ratio: 12.8:1
  • Cooling System: Liquid
  • Cylinders: 1
  • Engine Disp. to Weight (cc): 2
  • Engine Size (cc): 449
  • Engine Size (ci): 27.4
  • Engine Stroke: 4-Stroke
  • Engine Type: Single-Cylinder
  • Fuel Capacity (gal): 1.9
  • Fuel Injector
  • Fuel Injector Size (mm): 44
  • Fuel Requirements: Premium
  • Horsepower: 63
  • Horsepower (kW): 47
  • Starter: Electric
  • Stroke (in): 2.5
  • Stroke (mm): 63.4
  • Valve Configuration: SOHC
  • Valves: 4
  • Valves Per Cylinder: 4
Other Information
  • Chain Guard
  • Decal Kit
  • Exhaust Guard
  • Exterior Covers
  • Exterior Guards
  • Foot Pegs
  • Foot Peg Location: Driver
  • Fork Guards
  • Front Fender
  • Hand Grips
  • Radiator Cover
  • Rear Fender
  • Stand
  • Stand Type: Kick
Specifications
  • Body Material: Plastic
  • Dry Weight (kg): 102.6
  • Dry Weight (lbs): 226
  • Front Tire (Full Spec): Dunlop GEOMAX MX34 80/100 R21 51M
  • Front Tire (Inches): 21
  • Front Tire Aspect Ratio: 100
  • Front Tire Speed Rating: M
  • Front Tire Width: 80
  • Front Wheel Width (in): 1.6
  • Fuel Capacity (liters): 7
  • Ground Clearance (in): 13.5
  • Ground Clearance (mm): 343
  • GVWR (kgs): 335
  • GVWR (lbs): 739
  • Rear Tire (Full Spec): Dunlop GEOMAX MX34 110/90 R19 62M
  • Rear Tire (Inches): 19
  • Rear Tire Aspect Ratio: 90
  • Rear Tire Speed Rating: M
  • Rear Tire Width: 110
  • Rear Wheel Width (in): 2.15
  • Seat Height (inches): 37
  • Tube / Tubeless: Tubed
  • Wheelbase (in): 58.5
  • Wheelbase (mm): 1485
  • Wheels Composition: Aluminum
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Contact
XTREME MACHINES
700 STATE HWY ROUTE 33
MILLSTONE TOWNSHIP New Jersey 08535
Terms
We make every effort to present information that is accurate. However, it is based on data provided by the vehicle manufacturer and/or other sources and therefore exact configuration, color, specifications & accessories should be used as a guide only and are not guaranteed. We are not liable for any inaccuracies, claims or losses of any nature. Inventory is subject to prior sale and prices are subject to change without notice and cannot be combined with any other offer(s). The price for listed vehicles as equipped does not include other charges such as: License, Title, Registration Fees, State or Local Taxes, Smog Fees, Credit Investigation, Optional Credit Insurance, Physical Damage of Liability Insurance, Delivery Fees, Finance and/or Documentation Fees. Any and all differences must be addressed prior to the sale of this vehicle.