Flywheels

XACT Streetlite Single Mass Flywheel - N51/N52

T#:29002055

Part#: 601170

In Stock at Vendor

$ 830.00 USD

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$ 830.00 USD

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The ACT Streetlite flywheel offers the following benefits:

Noticeably improved engine response and acceleration: Experience a significant boost in engine performance and acceleration with this component. OE to mild gear rattle: Expect only minimal gear rattle, from Original Equipment (OE) standards to a mild level, ensuring a smoother drive. Heat-treated forging for strength and toughness: Crafted using heat-treated forging, this part guarantees enhanced strength and durability. Induction-hardened ring gears for maximum life: The ring gears undergo induction hardening, providing maximum lifespan and reliability. One-piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc: The one-piece design reduces potential failure points and ensures uniform and efficient heat transfer from the clutch disc, preventing issues like warped inserts or loose ring gears. Recommended for street and race use: This component is ideal for both everyday street driving and competitive racing environments.

Forged, CNC machined, and dynamically computer balanced for smooth high RPM reliability: Expertly forged, CNC machined, and dynamically balanced via computer to ensure smooth and reliable performance at high RPMs.

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Clutch Kit - E46 M3 (All) Factory

T#:56580210

Part#: 348569TCKTDXJQ3P

In Stock

$ 499.99 USD

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$ 499.99 USD

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The Turner E46 Clutch Refresh Kit bundles everything you need to replace your worn factory setup with OE-quality components. Built around a trusted Sachs clutch assembly, this kit is the perfect solution for restoring factory driving dynamics to your 3-Series without compromising daily driveability.

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ACT 04-05 BMW 330i (E46) 3.0L XACT Flywheel Streetlite

T#:35087395

Part#: ACT601160

In Stock

$ 752.00 USD

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$ 752.00 USD

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XACT Flywheel Streetlite

For production vehicles with a 6 bolt flywheel and build date from 01/2009

T#:7828840

Part#: 601030

Ships in 7 Business Days

$ 968.00 USD

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$ 968.00 USD

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Note: Single mass flywheel conversion. For 6-bolt crankshaft. Can be used with both factory clutch kit and ACT clutch kits. Gear rattle is expected 601130 is a Streetlite flywheel, which is considerably lighter than stock and is the most durable flywheel offering from ACT. Materials are properly distributed for maximum strength, lower inertia, good heat tolerance and rigidity. ACT's Streetlite flywheels are preferred for street or drag racing. ACT flywheels are serviceable and can be resurfaced with no need to purchase additional parts. Features: Improved engine response and acceleration Heat-treated forging for strength and toguhness with induction-hardened ring gears for maximum life. One piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc. No more warped inserts or loose ring gears Forged, CNC machined and dynamically computer balanced for smooth high RPM reliability Recommended for street and race use. Gear rattle is expected.

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JB Racing Lightweight Aluminum Flywheel & Clutch Kit

T#:15777312

Part#: 520-040-215-KT

Back Ordered

$ 1,003.99

This product was last offered at the strikethrough price on
05-07-2026

$ 994.99 USD

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$ 994.99 USD

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A lightweight aluminum flywheel is a great way to increase throttle response and free up horsepower by reducing drivetrain loss. Factory flywheels are built to minimize engine and transmission vibrations, making them heavier and requiring more energy to make them spin. An aluminum flywheel can save lots of weight over the stock steel unit - sometimes over 50%. While the dampening effect of the stock flywheel is reduced, most enthusiasts would agree that the increase in performance is well worth it. In addition, the lighter flywheel allows the engine to spin more freely, improving throttle response. This JB Racing lightweight aluminum flywheel kit and is designed to be used with the included factory clutch, making replacement and service easy and inexpensive, especially compared to specialized racing clutches. It also preserves the driveability of your car on the street, and enthusiasts tolerant of a mild to moderate NVH increase will be especially taken with this setup. In addition, the JB Racing flywheel can be easily rebuilt with a new clutch contact surface, allowing you to enjoy faster revs and superior response for many years to come. Stock Flywheel Weight: 27 lbs. JB Racing Lightweight Aluminum Flywheel: 9 lbs.

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BMW E36 M3 Z3 XACT Flywheel Streetlite

T#:31390578

Part#: 601011

Ships in 7 Business Days

$ 694.00 USD

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$ 694.00 USD

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BMW E36 M3 Z3 XACT Flywheel Streetlite is a high-performance upgrade designed to enhance engine response and acceleration. This Streetlite flywheel is significantly lighter than the stock flywheel, offering superior durability and strength. Crafted from Chromoly Steel, it provides excellent heat tolerance and rigidity, making it ideal for both street and drag racing applications.

Improved Performance: Noticeably enhances engine response and acceleration with minimal gear rattle.
Durability: Heat-treated forging ensures strength and toughness, while induction-hardened ring gears extend lifespan.
Quality Construction: One-piece design prevents failure, ensuring uniform heat transfer and preventing issues like warped inserts or loose ring gears.
Recommended Use: Suitable for both street and race applications.
ACT Advantage: Forged, CNC machined, and dynamically balanced for reliable high RPM performance.

Specifications:

Product Weight: 15.2 lbs
Material: Chromoly Steel
Friction Surface Diameter: 9.4 inches (240 mm)
Flywheel Type: Streetlite
Tooth Quantity: 113
Warranty: 12 Months
SFI Rating: 1.1

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JB Racing Lightweight Aluminum Flywheel & Clutch Kit

T#:15677572

Part#: 21217528209-KT

In Stock

$ 1,386.99

This product was last offered at the strikethrough price on
06-04-2026

$ 1,307.99 USD

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$ 1,307.99 USD

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A lightweight aluminum flywheel is a great way to increase throttle response and free up horsepower by reducing drivetrain loss. Factory flywheels are built to minimize engine and transmission vibrations, making them heavier and requiring more energy to make them spin. An aluminum flywheel can save lots of weight over the stock steel unit - sometimes over 50%. While the dampening effect of the stock flywheel is reduced, most enthusiasts would agree that the increase in performance is well worth it. In addition, the lighter flywheel allows the engine to spin more freely, improving throttle response. This JB Racing lightweight aluminum flywheel kit and is designed to be used with the included factory clutch, making replacement and service easy and inexpensive, especially compared to specialized racing clutches. It also preserves the driveability of your car on the street, and enthusiasts tolerant of a mild to moderate NVH increase will be especially taken with this setup. In addition, the JB Racing flywheel can be easily rebuilt with a new clutch contact surface, allowing you to enjoy faster revs and superior response for many years to come.

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JB Racing Lightweight Aluminum Flywheel & Clutch Kit

T#:56471617

Part#: 520-090-240KT2

Ships in 10 Business Days

$ 917.99 USD

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$ 917.99 USD

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The JB Racing Lightweight Aluminum Flywheel decreases rotational inertia, allowing your engine to spin up and drop revs significantly faster. Paired with a robust Sachs Clutch Kit, you get proven OEM quality friction materials designed to withstand aggressive shifting

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JB Racing Lightweight Aluminum Flywheel & Clutch Kit

T#:15710807

Part#: 520190240-KT

Ships in 3 Business Days

$ 1,060.99 USD

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$ 1,060.99 USD

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A lightweight aluminum flywheel is a great way to increase throttle response and free up horsepower by reducing drivetrain loss. Factory flywheels are built to minimize engine and transmission vibrations, making them heavier and requiring more energy to make them spin. An aluminum flywheel can save lots of weight over the stock steel unit - sometimes over 50%. While the dampening effect of the stock flywheel is reduced, most enthusiasts would agree that the increase in performance is well worth it. In addition, the lighter flywheel allows the engine to spin more freely, improving throttle response.

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JB Racing Lightweight Aluminum Flywheel & Clutch Kit

T#:15710788

Part#: 21217515146-KT

Ships in 9 Business Days

$ 1,518.99

This product was last offered at the strikethrough price on
03-05-2026

$ 1,322.99 USD

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$ 1,322.99 USD

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This JB Racing lightweight aluminum flywheel kit and is designed to be used with the included factory clutch, making replacement and service easy and inexpensive, especially compared to specialized racing clutches. It also preserves the driveability of your car on the street, and enthusiasts tolerant of a mild to moderate NVH increase will be especially taken with this setup. In addition, the JB Racing flywheel can be easily rebuilt with a new clutch contact surface, allowing you to enjoy faster revs and superior response for many years to come. A lightweight aluminum flywheel is a great way to increase throttle response and free up horsepower by reducing drivetrain loss. Factory flywheels are built to minimize engine and transmission vibrations, making them heavier and requiring more energy to make them spin. An aluminum flywheel can save lots of weight over the stock steel unit - sometimes over 50%. While the dampening effect of the stock flywheel is reduced, most enthusiasts would agree that the increase in performance is well worth it. In addition, the lighter flywheel allows the engine to spin more freely, improving throttle response.

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JB Racing Lightweight Steel Flywheel - Grand-Am Legal - E46, MZ3, Z4 ...

T#:40748575

Part#: 520010240SGA

Ships on Sep 4, 2026

$ 868.00 USD

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$ 868.00 USD

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This lightened steel flywheel is specifically designed (and approved) for use in Grand-Am road racing but can also be used as a mild street upgrade if a full aluminum lightweight flywheel is not called for. The Grand-Am flywheel is 20% lighter than stock to meet the rules for the GS and ST classes.Modern flywheels are built with additional components and features that are designed to dampen and minimize vibrations from the engine and transmission. As a result they have become bloated in weight and that means more energy is used up just making the flywheel spin. A lightweight flywheel does away with the dual mass design and its additional mass so more energy can be diverted to where it counts most - moving the car. The flywheel and clutch is one of the first areas that engine builders address when making the rotating assembly lighter for race engines. The dampening effect is just not needed on cars that are focused on performance.

In addition to releasing more power to the wheels, the lighter flywheel allows the engine to spin more freely, which improves throttle response. The engine revs much faster than before. With the engine spinning easier the power band comes up much sooner. The stock steel flywheel feels lazy in comparison. There is a driving adjustment required to get used to how much faster the engine revs but that's not really a downside.

Grand-Am approved this flywheel to be used with a factory E36 M3 clutch. This opens up a lot of clutch and pressure plate options but we typically used this with a stock Sachs OEM clutch kit. This makes replacement clutch components easy to source and inexpensive when compared to specialized racing clutches.

Lightweight flywheels are considered 'single-mass' flywheels because they do not have the same dampening designs as an original 'dual-mass' flywheel. With a single-mass design more noise and vibration may be noticeable. There are steps you can take to minimize the noise - heavier weight transmission oil and clutch discs with anti-rattle springs (sprung-hub clutch). In addition to the standard replacement clutches, we also sell Sachs Performance sprung hub clutches that also work with the JB flywheels.

If being used on a 330i 6-speed or Z4 6-speed an additional pilot bearing hub is required. Select your appropriate model and transmission from the list below.

Stock Flywheel Weight = 25.0lbs
JB Flywheel Weight = 20.0lbs

This item fits the following BMWs:
2001-2002 E46 BMW 330i 330ci 5-speed
2003-2006 E46 BMW 330i 330ci 6-speed
2001-2006 E46 BMW M3
1998-2002 Z3 BMW Z3 M Roadster M Coupe
2003-2005 E85 BMW Z4 2.5i Z4 3.0i

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