AASCO Lightweight Flywheel & Sachs Performance Clutch Kit – Porsche 986 Boxster S Manual 2000–2004

Part Number: 106412-11-S-PKG
Brand: AASCO Motorsports

AASCO Fitment Guide

Upgrade your manual Porsche 986 Boxster S with a complete AASCO billet aluminum lightweight flywheel and Sachs Performance clutch package designed to reduce rotating mass, dramatically improve engine response, and refresh the clutch system at the same time. This kit pairs the AASCO 13 lb lightweight flywheel with compatible Sachs Performance clutch components for 2000–2004 Porsche 986 Boxster S 3.2L manual applications.

Compared to the heavier factory 27 lb dual-mass flywheel setup, the AASCO lightweight flywheel reduces rotating engine mass by approximately 14 lb and helps the engine rev more freely, respond more sharply, and feel 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 986 Boxster S 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, mechanical feel from their manual Boxster S while also replacing the clutch, pressure plate, release bearing, and related hardware with a matched Sachs Performance clutch package. 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 Boxster S models:

• 2000–2004 Porsche Boxster S, 986 chassis, 3.2L

This kit is intended for select manual transmission Porsche 986 Boxster S 3.2L applications listed by AASCO. It is not intended for Tiptronic applications.

Product Details

• Complete AASCO lightweight flywheel and Sachs Performance clutch kit

• Part number: 106412-11-S-PKG

• Includes AASCO billet aluminum lightweight flywheel: 106412-11

• Includes Sachs Performance pressure plate: 883082999754

• Includes Sachs Performance clutch disc: 881861999856

• Includes Sachs release bearing and required installation hardware

• Flywheel weight: approximately 13 lb

• Factory flywheel weight: approximately 27 lb

• Approximate rotational mass savings: 14 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

• Matched flywheel and Sachs Performance clutch package

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 for the 986 Boxster platform. The correct choice depends on your model, engine, and clutch configuration.

This listing is for the AASCO 106412-11-S-PKG complete kit. It is the right choice if you want the AASCO lightweight flywheel, Sachs Performance pressure plate, Sachs Performance clutch disc, release bearing, and hardware together as a matched package for your 2000–2004 Porsche 986 Boxster S 3.2L manual.

How This Differs From 106412-11-PKG

The 106412-11-PKG and 106412-11-S-PKG kits use the same AASCO lightweight flywheel and the same Sachs Performance pressure plate. The key difference is the clutch disc included in the kit.

• 106412-11-PKG uses Sachs Performance clutch disc 881861000017

• 106412-11-S-PKG uses Sachs Performance clutch disc 881861999856

For 1997–1999 Porsche 986 Boxster 2.5L and 2000–2004 Porsche 986 Boxster 2.7L applications, use 106412-11-PKG.

For 2000–2004 Porsche 986 Boxster S 3.2L applications, use 106412-11-S-PKG.

How This Differs From 106412-11 Flywheel-Only

The 106412-11 listing is the flywheel only. It is the right choice if your car already has a compatible clutch and pressure plate setup in good condition, or if you are replacing an existing AASCO 106412-11 flywheel and reusing compatible clutch components.

This 106412-11-S-PKG listing is the complete 986 Boxster S-specific kit. 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.

Good Candidates for This Complete Kit

This complete kit is generally intended for:

• 2000–2004 Porsche 986 Boxster S 3.2L manual applications listed by AASCO

• Cars with a worn clutch, worn pressure plate, or unknown clutch service history

• Cars converting from the factory dual-mass flywheel setup to an AASCO lightweight flywheel and Sachs Performance clutch setup

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

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

Installation Notes

AASCO notes that the larger portion of the clutch disc spring carrier must face toward the flywheel. If the clutch disc is installed backwards, the clutch diaphragm spring may contact the clutch disc, which can result in clutch failure and may not be covered under warranty.

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

Important Notes

This listing is for the complete AASCO lightweight flywheel and Sachs Performance clutch package listed under part number 106412-11-S-PKG.

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.

Before installation, compare the new flywheel, clutch, pressure plate, release bearing, and hardware 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 ×12 in

• Shipping weight: 34 lb