AASCO Lightweight Flywheel – Porsche 997.1 Carrera S / Carrera 4S Manual 2005–2008

Part Number: 106417-11
Brand: AASCO Motorsports

AASCO Fitment Guide

Upgrade your manual Porsche 997.1 Carrera S or Carrera 4S with an AASCO billet aluminum lightweight flywheel designed to reduce rotating mass and dramatically improve engine response while retaining the factory OEM pressure plate setup. This 14 lb flywheel replaces the heavier factory 32 lb dual-mass flywheel setup on compatible 2005–2008 Porsche 997 Carrera S and Carrera 4S 3.8L models, removing roughly 18 lb of rotating mass. The result is an engine that revs more freely, responds more sharply, and feels more alive during downshifts, heel-toe shifting, and spirited driving.

At DasMotoring, this is one of our favorite upgrades for a manual Porsche. A lightweight flywheel can completely change the character of the car — making it feel sharper, more mechanical, and more connected. If your 997.1 Carrera S or Carrera 4S has started to feel a little too slow or soulless, this is one of those upgrades that can reignite your love for the car and give it some of that 911 S/T-inspired character and flair.

We have run AASCO lightweight flywheels on our own manual Porsches for years through daily driving, traffic, backroad driving, and track use with excellent results.

This is a great choice for drivers looking for a more responsive, motorsport-inspired feel from their manual 997.1 Carrera S or Carrera 4S while retaining the factory OEM pressure plate configuration. The AASCO flywheel also uses a serviceable friction surface. With proper maintenance and normal use, the flywheel body is designed to be reused long-term — so future clutch services typically only require replacing the friction surface rather than the entire flywheel.

Fitment

Fits select manual transmission Porsche 911 models:

• 2005–2008 Porsche 911 Carrera S, 997.1 chassis, 3.8L

• 2005–2008 Porsche 911 Carrera 4S, 997.1 chassis, 3.8L

This flywheel is intended for 2005–2008 Porsche 997 Carrera S / Carrera 4S manual applications using the factory OEM pressure plate setup.

This flywheel is not intended for Tiptronic, PDK, Turbo, GT3, Carrera, Carrera 4 non-S, or non-3.8L applications unless specifically confirmed.

Product Details

• AASCO billet aluminum lightweight flywheel

• Part number: 106417-11

• Designed for 2005–2008 Porsche 997.1 Carrera S / Carrera 4S 3.8L manual applications

• For use with the factory OEM pressure plate

• Flywheel weight: approximately 14 lb

• Factory flywheel weight: approximately 32 lb

• Approximate rotational mass savings: 18 lb compared to the factory flywheel

• Replaceable friction surface design

• Long-term serviceable flywheel body

• Reduces rotating engine mass compared to the factory dual-mass flywheel

• Helps the engine rev faster

• Improves throttle response and rev-matching feel

• Flywheel-only listing

Driving Feel

A lightweight flywheel reduces rotating mass at the engine, allowing the engine to gain and lose RPM more quickly. The result is a sharper, more immediate connection between your right foot, the engine, and the gearbox. Rev-matched downshifts feel cleaner, throttle blips feel more natural, and the car takes on a more responsive, motorsport-style personality.

Because the flywheel is significantly lighter than the factory dual-mass flywheel setup, some additional drivetrain noise, gear rollover sound, or chatter may be present. This is normal for many lightweight flywheel conversions and is part of the more mechanical driving experience.

The best way to minimize NVH and gearbox chatter is to avoid lugging the engine. Drivers should never lug the engine to begin with, and this is especially important with a lightweight flywheel. Keeping the engine above approximately 2,000 rpm, or selecting a lower gear when climbing hills or accelerating from low speed, will help keep the drivetrain happier and reduce unwanted chatter. The higher the rpm, the less drivetrain chatter and NVH you will have.

Which Version Should I Buy?

AASCO offers several similar-looking lightweight flywheel and clutch options for the 996 / 997 Carrera platform. The correct choice depends on your model, engine, and pressure plate configuration.

This listing is for the AASCO 106417-11 flywheel only. It is the right choice if your 2005–2008 Porsche 997.1 Carrera S / Carrera 4S 3.8L is retaining the factory OEM pressure plate setup.

How This Differs From 106411-11

The 106411-11 and 106417-11 flywheels are both AASCO lightweight flywheel options for the 996 / 997 Carrera family, but they are not interchangeable for every setup.

For 2005–2008 Porsche 997.1 Carrera S / Carrera 4S 3.8L applications using the factory OEM pressure plate, AASCO lists 106417-11.

Do not assume the standard 106411-11 flywheel-only listing is correct for a 997.1 Carrera S / Carrera 4S with the factory pressure plate. For factory pressure plate applications, use 106417-11.

Factory Pressure Plate vs. Sachs Performance Pressure Plate

For 2005–2008 Porsche 997.1 Carrera S / Carrera 4S 3.8L applications, the correct AASCO option depends on the clutch and pressure plate setup:

• If your 997.1 Carrera S / Carrera 4S is using the factory OEM pressure plate, use 106417-11.

• If your 997.1 Carrera S / Carrera 4S is being converted to the Sachs Performance clutch / pressure plate setup, use the complete 106411-11-PKG-02-04 kit.

Good Candidates for This Flywheel-Only Listing

This flywheel-only listing is generally intended for:

• 2005–2008 Porsche 997.1 Carrera S 3.8L manual applications using the factory OEM pressure plate

• 2005–2008 Porsche 997.1 Carrera 4S 3.8L manual applications using the factory OEM pressure plate

• Cars that already have a compatible factory pressure plate setup in good condition

• Cars replacing an existing AASCO 106417-11 flywheel

• Drivers who want the lightweight flywheel only rather than a complete clutch package

When to Buy the Complete Kit Instead

Choose a complete AASCO flywheel and Sachs Performance clutch kit instead of this flywheel-only listing if:

• Your clutch is worn or due for replacement

• Your pressure plate is worn, heat-spotted, damaged, or unknown

• You are converting from the factory pressure plate setup to the Sachs Performance clutch / pressure plate setup

• You want everything matched together as a complete flywheel, clutch, pressure plate, release bearing, and hardware package

For 2005–2008 Porsche 997.1 Carrera S / Carrera 4S applications converting to the Sachs Performance clutch / pressure plate setup, use 106411-11-PKG-02-04 instead.

If you are unsure which version you need, contact us with your year, model, engine, transmission, and current clutch setup so we can help point you toward the correct AASCO option.

Service Parts

• Replaceable friction surface: HS9587T-POR

• Friction surface bolt package: HS9587T-POR-BLT-PKG

Important Notes

This listing is for the flywheel only. Clutch components, pressure plate, release bearing, hardware, and related installation parts are not included unless specifically stated.

This flywheel is specifically for 997.1 Carrera S / Carrera 4S applications using the factory OEM pressure plate. Fitment may depend on the vehicle’s model year, engine, transmission, and clutch / pressure plate configuration. Always confirm compatibility with your exact vehicle before ordering.

Professional installation is recommended. However, there are DIY how-to guides linked below if you have the tools and equipment at home.

Before installation, compare the new flywheel and related components to the original components being replaced.

Availability

AASCO Motorsports parts are specialty performance components. Although many items are available from stock, occasional delays may occur if an item is backordered or if AASCO is manufacturing a new batch. If there is a delay, we will provide an updated ETA before fulfillment.

Shipping

• Shipping dimensions: 15 x 15 x 4 in

• Shipping weight: 15 lb