Overview

2026 KTM SX-F450 Factory Edition

Motorcycle

2026 KTM 450 SX-F FACTORY EDITION

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.

Starting at $13,699 MSRP

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Engine

Design

1-cylinder, 4-stroke engine

Displacement

449.9 cm³

Transmission

5-speed

Fuel-mixture generation

Keihin EFI, throttle body 44 mm

EMS

Keihin EMS

Clutch primary drive teeth

Primary drive

29:72

Engine cylinder

Single cylinder

Engine stroke

4-Stroke

Chassis

Frame design

Central double-cradle-type 25CrMo4 steel

Front brake

Disc brake

Rear brake

Disc brake

Rear subframe design

Aluminium / Polyamide Glass Fiber

Chain

520, Non-sealed

Suspension

Front suspension

WP XACT PRO 7548

Rear suspension

WP XACT PRO 8950

Suspension travel (front)

300 mm

Suspension travel (rear)

300 mm

Front suspension adjustment

Compression and rebound adjustable

Rear suspension setting

Compression and rebound adjustable, Preload Adjuster

Dimensions

Seat height

958 mm

Ground clearance

343 mm

Tank capacity (approx.)

7.2 l

Weight (without fuel)

106.4 kg

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.

Air filter box

Made to provide maximum airflow, the air filter box is designed with positioned inlet ducts aimed at preventing air deformation and maintaining filter protection. The Twin Air filter and air filter design involve a simple fail-proof mounting system for safe and accurate tool-less installation. Quickly removing the left side panel allows for easy track-side maintenance. A vented air filter box cover is also included for all SX and SX-F models in the buy-pack.

Serviceability

The 2026 KTM 450 SX-F FACTORY EDITION is engineered and designed to provide riders with easy-to-access service parts, as well as suspension adjustability. This permits faster trackside and off-season maintenance, as well as simplifying motocross for novice riders without pit crews. This year, to add the cooling process, the radiator has a new closure that means opening and access is much easier and without the need for a lot of force.