New Husqvarna FC450 model details, with links to new and used dealer listings and latest Husqvarna deals

Overview
The FC 450 serves as the flagship of Husqvarna’s motocross lineup, delivering class-leading performance with a combination of a perfectly balanced chromium-molybdenum chassis and a state-of-the-art engine. Equipped with race-tested components like Dunlop Geomax MX34 tyres, ProTaper handlebars, and WP suspension, it offers the fastest way around any circuit.

Faster and Wiser
Powerful Engine: A lightweight engine weighing just 59 lb (26.8 kg) precisely centralizes mass for enhanced handling and improved anti-squat characteristics. Service markers make maintenance easier.

• Cylinder Head: Compact SOHC layout with the camshaft positioned as close to the center of gravity as possible. It includes a fine-punched cam chain on low-friction guides and a single oil spray jet for efficient cooling.
• Cylinder & Piston: Features a 95 mm bore, 63.4 mm stroke aluminum cylinder with a CP bridged-box piston (327 g) and a 13.6:1 compression ratio for peak power and endurance.
• Crankshaft: Carefully positioned to optimize rotating mass for traction and rideability, using a plain big-end bearing with two force-fitted shells for durability and 90-hour service intervals.
• Crankcases: Die-cast for optimized mass centralization, boasting a thin yet strong wall design.
• DDS Clutch: Utilizes a dampened diaphragm steel clutch, replacing coil springs with a single steel pressure plate inside a compact CNC-machined steel basket.
• Gearbox: A lightweight, durable 5-speed gearbox from Pankl Racing Systems, featuring motocross-specific ratios (29:72) and an integrated Quickshifter via the Map Select Switch.

Ride Easier

• Lightweight Frame: A chromium-molybdenum chassis with optimized material distribution enhances cornering stability and confidence. Finished in metallic blue powder coating with frame protectors for durability and grip.
• Subframe: Made from 60% polyamide and 40% aluminum; two-piece design weighs just 1.8 kg and balances strength with weight.
• CNC Triple Clamps: Offer precisely tuned geometry and handlebar alignment, with options for vibration damping or fixed mounting.
• WP XACT Front Suspension: 48 mm closed-cartridge forks with mid-valve damping and a hydrostop feature ensure smooth control on harsh landings, with easy adjustments.
• WP XACT Rear Shock: CFD-optimized main piston for superior comfort, with hand-adjustable rebound and compression.
• Swingarm: Die-cast, rigid design with a 22 mm rear axle and integrated chain slider to maintain momentum through tough sections.

Effortless Ergonomics

• Functional Bodywork: Designed for comfortable rider control with smooth contact points and in-mold graphics. Tall, wide seat and high-grip cover minimize fatigue and maintain rider positioning.
• Airbox: One-piece design ensures deformation-resistant airflow and tool-free access to the Twin Air filter.
• Hydraulic Clutch: A Brembo hydraulic system ensures minimal maintenance, consistent pressure point, and reliability in all conditions.
• Hydraulic Brakes: High-performance Brembo calipers with 260 mm front and 220 mm rear discs resist mud buildup and deliver trusted stopping power.
• ProTaper Handlebars & ODI Grips: Ergonomic, lightweight, and durable handlebar configuration with lock-on grips for personalized throttle response.
• Footrests: CFD-engineered wide design for better control and reduced ruts or barrier snagging.

Master Your Art

• Wheels & Tyres: D.I.D alloy rims with CNC hubs and spokes matched to Dunlop MX34 tyres for precision cornering and traction.
• Exhaust System: Compact two-piece header with a resonance chamber and short silencer improves performance and keeps mass centralized—removable without taking off the rear shock.
• Cooling System: CFD-optimized aluminum radiators with a central frame tube for coolant pressure consistency and easy inspection via a threaded cap.
• Fuel Tank: A 7.2 l fuel tank is cushioned on rubber and integrates cleanly with bodywork, featuring protected routing and a cap that guards the fuel filter.

Technologically Advanced

• Map Select Switch: Handlebar-mounted switch to toggle engine maps, Quickshifter, Launch Control, and Traction Control on-the-fly.
• Quickshifter: Enables clutchless upshifts via ignition interruption from the shift drum signal; active from second gear up.
• Traction Control: Detects rapid RPM increases, reducing power to maximize rear-wheel grip in low traction conditions.
• Launch Control: Activated by pressing TC and Quickshifter buttons simultaneously to limit wheelspin until a gear change occurs.
• Engine Maps: Two maps are standard—Map 1 offers linear throttle, while Map 2 delivers a sharper, more aggressive response.
• EMS with Rollover Sensor: Fast, compact engine management system includes an ROS to shut off the engine in severe crashes.
• Hour Meter with Fuel Indicator: Displays operating hours and fuel status via LED FI warning.
• Start/Stop Switch: Integrated switch replaces a dedicated stop button, minimizing damage risks in the event of a fall.
• Electric Start: Features a lightweight Li-Ion 2.0 Ah battery (~1 kg lighter than traditional), delivering the convenience of electric starting without added weight.