
Helix Billet Steel Performance Single Mass Flywheel
by Helix
£459.79
MPNHF9201
Prices updated 17 Mar 2026
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Demon Tweeks
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Product Description
The Helix Billet Steel Performance Single Mass Flywheel is a lightweight solution designed for tuned engines and motorsport use, offering sharper engine response and improved reliability at high RPMs. Each unit is CNC machined from billet chromoly steel, finely balanced, and built to handle the demands of aggressive clutch use and elevated rev limits.Here are the key features, benefits, and outcomes that make this flywheel a performance upgrade worth considering:CNC machined billet chromoly steel construction: Manufactured from high-strength billet steel using precision CNC machining, this design offers superior durability under high revs and heavy loads, ensuring long-term reliability for performance engines.Reduced overall mass: Weighs less than most OEM flywheels thanks to efficient material removal, which reduces rotating mass and helps your engine build revs faster, improving throttle response and acceleration.Mass concentrated at the centre: The centralised weight distribution minimises rotational inertia, which makes the engine more responsive and helps improve gear change timing by allowing revs to rise and fall more rapidly.OEM ring gear fitment: Retains original ring gear dimensions and location, allowing for straightforward installation without the need for modification, saving time during fitting and ensuring starter compatibility.Finely balanced during production: Carefully balanced to a high tolerance to reduce vibration during operation, promoting smooth engine performance even at higher RPMs.High machining tolerances: Tight manufacturing tolerances provide consistent surface geometry and flatness, improving clutch engagement and overall drivetrain efficiency.Direct replacement fit: Compatible with standard OEM clutch covers in most cases, meaning you can upgrade flywheel performance without needing a full new clutch system.Options for race clutch compatibility: Selected versions are pre-drilled to accept smaller diameter competition clutches, including multi-plate variants, giving you flexibility for high-power builds.Ideal for high-output engines: Strength and durability make it well suited for engines producing significantly more power and torque than stock, withstanding the added stress of racing or aggressive road use.By reducing weight and centralising mass, this flywheel allows the engine to spin up more freely, helping you get off the line quicker and shift gears with more precision. The improved engine braking is especially useful when entering corners on track, making downshifts cleaner and more controlled. Its billet steel construction handles higher RPMs with ease, supporting reliable performance under the increased stresses of tuned engines. This makes it a strong choice for competition builds or any road car running well beyond factory spec.If you want sharper throttle response, quicker gear changes and more consistent performance under load, this flywheel delivers all three. Its strength, precision and lighter weight are built for engines that demand more.Please note: These flywheels are a single mass design, if they replacing an OEM dual mass flywheel is it recommended that a clutch drive plate with a sprung centre is used. An increase in noise and vibration, especially at idle speeds may be experienced.
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