There’s another Factory-Edish in town folks.
The hydro-formed, laser-cut and robot-welded frame is crafted by WP Performance Systems. Constructed with specifically calculated parameters of longitudinal and torsional flex, the FC 450 ROCKSTAR EDITION frame features an increase in longitudinal rigidity. The frame is finished off in a premium black powder coating. A carbon fiber reinforced skid plate and frame protectors are there for protection and durability.
2.COMPOSITE CARBON FIBER SUBFRAME
Showcasing pioneering technologies and innovation the composite subframe is a design unique to Husqvarna Motorcycles. Using 70% polyamide and 30% carbon fiber, the new 2-piece subframe design claims to save 0.5 lb (250 g) for a total claimed weight of just over 2.2 lbs (1 kg). Apart from being robust, specific care is taken to create the perfect rigidity for optimal handling and rider comfort.
The hollow, cast aluminum swingarm is designed to offer stiffness and reliability at the lowest possible weight. The chain adjustment length has increased by 5mm extending the total wheelbase range for improved straight line stability on rough tracks and whoops. The machining on the side by Husqvarna Motorcycles engineers is a mark of premium quality that demonstrates Husqvarna’s attention to detail and superior craftsmanship.
4. WP AER 48 FRONT FORK
The 48 mm split air fork features a capsuled air spring and pressurized oil chamber. Damping is adjusted via the single air pressure valve for pre-load (on the left) as well as easy access clickers adjusting damping with 30 clicks (on the right). Additionally, the air pump needed to adjust the air pressure in the fork is provided as standard equipment. Standard on the FC 450 ROCKSTAR EDITION, the mechanical holeshot device compresses the front forks and decreases front wheel lift right off the start.
5. CNC-MACHINED TRIPLE CLAMPS
The 22 mm offset CNC-machined triple clamps feature an integrated rubber damping system that reduces vibration and increases rider comfort. Due to the increased longitudinal rigidity of the main frame, the upper triple clamp is now stiffer. A 3-way handlebar adjustment is standard and allows for customizable ergonomics. Additionally, the front number plate integrates a triple clamp protector which covers the lower triple clamp and protects it from wear.
6. WP REAR SHOCK
Featuring a new main piston and updated setting, the WP DCC is further refined to provide better damping characteristics while trying to keep that compact and lightweight design. Fully adjustable and matched to a linkage system with a specific geometry the system is said to deliver even more traction and absorption than the previous model. The rear wheel travel is 300 mm.
The standard of brakes in motocross is Brembo, we all know this. The 260 mm now floating front and 220 mm solid rear discs is there to deliver superior stopping power instilling confidence in any condition. A standard front disc protector is fitted as standard.
8. PROTAPER HANDLEBAR
The ProTaper handlebar has been one of my favorite handlebars to go to on any bike. The new bend is lower and has less sweep than the standard 2018 handlebar bend. Standard handguards are back again and can offer roost protection on those roost happy days.
9. 44 MM THROTTLE BODY
The FC 450 ROCKSTAR EDITION features a 44 mm Keihin throttle body. The injector is positioned accordingly to offer the most efficient flow into the combustion chamber. To ensure optimal throttle response the throttle cable is mounted directly and without a throttle linkage. This set-up claims to provide more immediate throttle response and feeling. A new throttle cable routing eases maintenance allowing the cable to be removed more seamlessly.
10. EXHAUST SYSTEM
The header pipe features a new flow-designed resonance chamber that is integrated into the header pipe. The new header pipe also features a new joining position allowing it to be removed without removing the rear shock. Hallelujah!!!! The new silencer is shorter and more compact while claiming to deliver the same damping volume and noise level. The unit is crafted from lightweight aluminum and is stylishly finished off in a new coating that proudly carries the Husqvarna Motorcycles logo.
11. ELECTRIC START & NEW LI-ION BATTERY
Along with the benefit of an easy electric starting system, a new generation Li-Ion 2.0 Ah battery is fitted to the FC 450 ROCKSTAR EDITION. The Li-Ion battery weighs approximately 2.2 lbs (1 kg) less than a conventional lead battery. Offering the convenience of electric starting, overall weight is being kept to a minimum.
12. INTEGRATED COOLING SYSTEM & RADIATORS
The radiators are expertly crafted by WP Performance Systems using high-strength aluminum. CFD (computational fluid dynamics) technology is used to channel air through the radiators more efficiently and provide optimal cooling in any condition. The cooling system is integrated into the frame. Channeling coolant through the frame allows for improved cooling says Husqvarna, with the application eliminating the need for additional hoses. New to the system is a larger center tube that runs through the frame. The new tube reduces the pressure at this point in the system allowing for a more consistent coolant flow.
13. FUEL TANK
The 1.85 gallon (7 liter) polythene fuel tanks incorporate a threaded filler cap and an integrated fuel pump. The fuel pump is optimized with a new internal line that routes directly from the pump to the flange for improved fuel flow. Additionally, the external fuel line has moved inward making it less exposed and susceptible to damage.
Black high-strength alloy rims by D.I.D are coupled to CNC-machined hubs using lightweight spokes and silver anodized aluminum nipples. The nipples have a new design reducing the frequency of checks or tightening.
The FC 450 ROCKSTAR EDITION features fresh bodywork. The new bodywork showcases Husqvarna Motorcycles’ pioneering design direction in motocross motorcycles. Apart from the Swedish inspired design, the ergonomics are specifically tailored to deliver greater comfort and control for the rider. Speaking with the R&D guys the contact points have been slimmed down making movement between riding positions as seamless as possible. Additionally, the new seat line and high grip seat cover add grip to the machine.
16. CYLINDER HEAD
The new SOHC cylinder head is now even more compact while being 15 mm lower and 1 lb (500 g) lighter. As a result of the more compact design, the camshaft is now closer to the center of gravity. Shorter valve timing is said to improve bottom end performance and responsiveness. The new camshaft features an improved cam surface and actuates four lightweight titanium valves. The diameter of the intake valves is 40 mm, with the exhaust valves featuring a diameter of 33 mm. Low-friction DLC coating on the rocker arm and low-friction chain guides are there for optimum efficiency and reliability.
The lightweight 5-speed gearbox is now produced by Pankl Racing Systems ensuring the highest level of durability and reliability. The gear lever features a design that prevents dirt build-up and keeps the lever tip in its original position even in the toughest conditions. An advanced gear sensor selects a specific engine map tailored for each gear.
18. DDS CLUTCH
The FC 450 ROCKSTAR EDITION features a DDS (Dampened Diaphragm Steel) clutch. The exclusive characteristics of this system include a single diaphragm steel pressure plate instead of traditional coil springs. It integrates a damping system for better traction and durability. The clutch basket is a single-piece CNC-machined steel component that allows the use of thin steel liners and contributes to the compact design of the engine. The billet clutch cover is exactly the same as the one used by the Rockstar Energy Husqvarna Factory Racing team.