01. Progressive performance
The FE 501 engine is the most powerful model in the Husqvarna Motorcycles FE line-up and benefits from advanced engineering techniques to deliver maximum performance. For 2024, the engine is tilted two degrees backwards for significantly improved anti-squat behaviour from the chassis, which further aids the centralisation of mass for improved overall handling. Servicing the FE 501 engine was a key focus during the design process, which is now much easier when compared to previous models thanks to the addition of service markers on the engine cases. Now lighter by 300 g and weighing just 29.5 kg, the 4-stroke engine is also more powerful with an exhilarating peak output.
The redesigned SOHC cylinder head is incredibly compact with the camshaft positioned as close to the centre of gravity as possible. A new, more durable fine-punched cam chain and Diamond-Like Carbon (DLC) coated rocker arm offer optimal efficiency and improved reliability while a single oil spray jet guarantees effective cooling. Redesigned intake ports contribute to creating a more efficient and powerful engine.
Cylinder and piston
The lightweight aluminium cylinder is an engineering masterpiece with a 95 mm bore and a stroke of 72 mm. Inside, the forged CP bridged-box-type piston features anodised annular grooves for added durability and extended service intervals. The compression ratio remains unchanged at 12.75:1.
Designed to be low in weight without sacrificing strength or reliability, the new crankcases are made using a high-pressure die-cast production process to create a thin-wall design. To centralise engine mass, the shaft arrangements are precisely positioned to harness rotating masses at the ideal centre of gravity.
The FE 501 features a 42 mm Keihin throttle body optimised for throttle response. The injector is positioned to ensure the most efficient flow into the combustion chamber with the throttle cable mounted directly without a linkage for an enhanced response.
The exhaust system is expertly designed to deliver class-leading performance at the lowest possible weight with the header pipe manufactured in two pieces. This design allows the header pipe to be removed without having to remove the rear shock. Further innovation allows for a short, compact silencer without increasing sound levels. The silencer is crafted from lightweight aluminium and stylishly finished with a black coating to highlight its premium quality.