Ninemeister Ultralight Flywheel and Performance Clutch Kit for Porsche 718 GT4, Spyder, and GTS (4.0L)

Description

The Ninemeister Lightweight Flywheel and Clutch Kit for 718 GT4 / Spyder / GTS 4.0L in a purpose-built single-mass flywheel and a high-capacity clutch assembly designed to sharpen throttle response and improve drivetrain efficiency. By dramatically reducing the rotating mass, this kit helps your flat-six engine rev more freely and deliver more of its power directly to the wheels — ideal for spirited driving or track-toned street builds. It also raises clutch load capacity and thermal resistance to support aggressive driving or high-gearbox stress without compromising daily usability.

Fitment Notes

• Compatible with Porsche 718 GT4, Boxster Spyder, and 718 GTS 4.0L models — any 4.0 L manual-transmission 718 platform (2020 onward).

• Designed as a direct-replacement for OEM flywheel and clutch — uses factory bell-housing, input shaft, and clutch linkage

• Intended for manual transmission only — not compatible with PDK/automatic variants. 

• Installation requires full clutch/flywheel removal; recommended to check and replace throw-out bearing as part of install.

Included

• Single-mass lightweight flywheel (CNC-machined, high-carbon forged billet) replacing the stock dual-mass flywheel

• Upgraded clutch assembly with reinforced pressure plate, high-capacity friction disc, and all necessary hardware for installation

• Spigot bearing and flywheel bolts (new) to complete install and ensure secure fitment

Product Specs

• Flywheel material: high-carbon forged billet / carbon-steel billet (per Ninemeister spec)

• Flywheel weight: approximately 13.6 lbs (6.2 kg) vs. stock dual-mass ~24.9 lbs (11.3 kg) — ~45% reduction in inertia

• Clutch capacity: capable of handling 550+ Nm torque, exceeding stock spec for handling higher power or track use.

• Compatibility: OEM clutch actuation and pedal feel maintained — clutch engagement remains smooth and manageable even with the performance upgrade.

Product Features

• Reduced Rotating Mass → More Power to the Wheels — By slashing flywheel inertia nearly in half, this kit allows the engine to rev quicker and deliver faster acceleration with less power lost turning heavy components.

• Sharper Throttle Response & Faster Rev-Matching — Quicker RPM transitions make downshifts, rev-matching, and throttle inputs more immediate and engaging.

• Higher Clutch Capacity & Durability — Uprated clutch materials and pressure plate handle increased torque and heat, making the kit suitable for aggressive driving or track use.

• Direct Replacement, OEM-Compatible — No custom fabrication required — installs using stock mounting points and retains original pedal feel and clutch actuation characteristics.

• Better Power Delivery Under Load — With lower drivetrain inertia, more of the engine’s torque reaches the wheels, improving launch, gear changes, and throttle response under stress.

• Balanced Daily-Use & Performance — While optimized for track or spirited driving, the clutch portion is sprung and maintains manageable pedal effort, keeping it usable for daily driving too.

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