AASCO Lightweight Steel Flywheel & Sachs Performance Clutch Kit – Porsche 997.1 Carrera / S Manual 2005-2008

Part Number: 106437-12-PKG
Brand: AASCO Motorsports

Upgrade your manual Porsche 997 Carrera with a complete AASCO lightweight steel flywheel and Sachs Performance clutch package designed to reduce rotating mass, improve engine response, and refresh the clutch system at the same time. This kit pairs an approximately 20 lb AASCO lightweight steel flywheel with compatible Sachs Performance clutch components for select Porsche 997.1 Carrera manual applications.

Compared to the approximately 32 lb factory dual-mass flywheel setup, this AASCO lightweight steel flywheel removes about 12 lb of rotating mass from the engine. The result is a sharper, more responsive flat-six that revs more freely, responds more directly, 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 Carrera 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 complete kit is a great choice for drivers looking for a more responsive, motorsport-inspired feel from their manual 997 Carrera while also replacing the clutch, pressure plate, release bearing, and related hardware with a matched Sachs Performance clutch package. The AASCO flywheel is a lightweight steel design, which can be a nice balance for street-driven cars that want sharper response without moving to the lightest possible flywheel setup.

Fitment

Fits select manual transmission Porsche 997.1 911 models:

• 2005–2008 Porsche 911 Carrera, 997.1 chassis, 3.6L, manual transmission

• 2005–2008 Porsche 911 Carrera 4, 997.1 chassis, 3.6L, manual transmission

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

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

This kit is intended for select manual transmission Porsche 997.1 Carrera-family applications using the included AASCO lightweight steel flywheel and Sachs Performance clutch package.

Product Details

• Complete AASCO lightweight steel flywheel and Sachs Performance clutch kit

• Part number: 106437-12-PKG

• Includes AASCO lightweight steel flywheel

• Includes Sachs Performance pressure plate: 883082999736

• Includes Sachs clutch disc: 881861999856

• Includes release bearing and required installation hardware

• Designed for select Porsche 997.1 Carrera-family manual applications

• Compatible with select 3.6L and 3.8L applications listed by AASCO

• AASCO lightweight steel flywheel weight: approximately 20 lb

• Factory flywheel weight: approximately 32 lb

• Approximate rotational mass savings: 12 lb

• Complete package weight: approximately 36 lb

• Lightweight steel flywheel construction

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

• Helps the engine rev faster

• Improves throttle response and rev-matching feel

• Matched flywheel and Sachs Performance clutch package

• Complete kit 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 lightweight flywheel and clutch options across the Porsche 911 platform. The correct choice depends on your chassis, engine, transmission, and clutch package.

This listing is for the AASCO 106437-12-PKG complete kit. It is the right choice if you want the AASCO lightweight steel flywheel, Sachs Performance pressure plate, Sachs clutch disc, release bearing, and installation hardware together as a matched package for your compatible 997.1 Carrera-family manual.

Steel vs. Aluminum Lightweight Flywheel

AASCO offers both aluminum and steel lightweight flywheel options for many Porsche applications.

The lightweight steel flywheel is a good choice for drivers who want sharper response than the factory dual-mass flywheel while retaining a slightly more street-balanced setup than the lightest aluminum flywheel option.

The aluminum flywheel option is generally the more aggressive lightweight choice and may provide the quickest engine response, while the steel flywheel can offer a nice middle ground for street and performance use.

Complete Kit vs. Flywheel-Only

This is a complete flywheel and clutch package. It is the better choice if your clutch is worn, your pressure plate is worn or unknown, or you want the flywheel and clutch components matched together from the start.

Choose this 106437-12-PKG complete kit if:

• Your clutch is worn or due for replacement

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

• Your release bearing or related hardware needs replacement

• You want everything matched together as a complete AASCO / Sachs package

• You are converting from the factory dual-mass flywheel setup to a complete lightweight steel flywheel and Sachs Performance clutch setup

Choose the flywheel-only option instead if:

• Your existing clutch and pressure plate setup is compatible and in good condition

• You are specifically replacing only the flywheel

• Your release bearing and related clutch hardware are already being handled separately

• You already know which clutch and pressure plate setup will be used with the flywheel

For the flywheel-only listing, use AASCO part number 106437-12.

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.

Installation Notes

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

Before installation, confirm all supplied flywheel, clutch, pressure plate, release bearing, hardware, and related components match the vehicle and intended clutch configuration.

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 12 in

• Shipping weight: 38 lb