BMW Z Series E85/6 (2003-2008)

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Autel - Corporate Logo
T#:641919
Part#: AUL1SENSOR
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Sale - Save 29% $ 60.96

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05-15-2026

$ 43.02 USD
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Sale - Save 29%
$ 60.96

This product was last offered at the strikethrough price on
05-15-2026

$ 43.02 USD
Free Shipping on orders $49 and up
12g Lower MX-Sensor weight is significantly lighter than most sensors ensures greater security and stability for durable use
JB Racing - Corporate Logo
T#:2801
Part#: 520-200-240
In Stock
$ 714.00 USD
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$ 714.00 USD
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Aluminum flywheels are much lighter than the stock steel flywheel and that produces better throttle response and more available horsepower to the wheels for faster acceleration. The JB Racing aluminum flywheels are a direct replacement for the stock flywheel and work with stock clutch components for an easy upgrade with very little downside.

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. The weight difference between an aluminum and steel flywheel is huge - sometimes more than 50% less. Without the additional mass, 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. Again, the difference is huge as you watch the revs build 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.

The JB lightweight flywheel is designed to be used with a factory organic clutch - the same clutch kit that you would get from any BMW dealer. This makes replacement clutch components easy to source and inexpensive when compared to specialized racing clutches. By using the factory BMW clutch, JB has also made the whole assembly easy to live with when used on the street. The clutch behaves the same as it originally did - just with better throttle response and more power! The JB flywheel can also be rebuilt with a new clutch contact surface - you don't have to buy a new flywheel.

Aluminum 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).

This JB flywheel replaces the stock flywheel and can be used with either the stock 228mm or stock 240mm clutch discs. Depending on the model you may have either clutch size in your car but this flywheel is compatible with both. You can install a 240mm clutch as a mild upgrade.

Stock Flywheel Weight = 24-31.0lbs
JB Flywheel Weight = 12.0lbs

This item fits the following BMWs:
2006-2010 E60 BMW - 525i, 528i, 530i
2006-2013 E90, E91, E92, E93 BMW - 325i, 328i, 330i
2007-2013 E82 BMW - 125i, 128i
2006-2008 E85, E86 BMW - Z4 3.0i, Z4 3.0si
2009-later E89 BMW - Z4 3.0i
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JB Racing - Corporate Logo
T#:3474
Part#: 520-190-240
Ships in 8 Business Days
$ 672.00 USD
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$ 672.00 USD
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This is a performance replacement for BMW Part # 21207533868 Aluminum flywheels are much lighter than the stock steel flywheel and that produces better throttle response and more available horsepower to the wheels for faster acceleration. The JB Racing aluminum flywheels are a direct replacement for the stock flywheel and work with stock clutch components for an easy upgrade with very little downside.

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. The weight difference between an aluminum and steel flywheel is huge - sometimes more than 50% less. Without the additional mass, 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. Again, the difference is huge as you watch the revs build 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.

The JB lightweight flywheel is designed to be used with a factory organic clutch - the same clutch kit that you would get from any BMW dealer. This makes replacement clutch components easy to source and inexpensive when compared to specialized racing clutches. By using the factory BMW clutch, JB has also made the whole assembly easy to live with when used on the street. The clutch behaves the same as it originally did - just with better throttle response and more power! The JB flywheel can also be rebuilt with a new clutch contact surface - you don't have to buy a new flywheel.

Aluminum 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).

The JB Flywheel includes the pilot bearing mounted in the flywheel hub, just like the factory configuration.

Stock Flywheel Weight = 25.0lbs
JB Flywheel Weight = 10.5lbs

This item fits the following BMWs:
2002-2005 E46 BMW 325i 330i (with 6-speed manual transmission)
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Shark Injector - Corporate Logo
T#:387575
Part#: N745Z430
Ships on Aug 11, 2026
Sale - Save 10% $ 349.00

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

$ 314.10 USD
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Sale - Save 10%
$ 349.00

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

$ 314.10 USD
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Revitalize your BMW's performance effortlessly with the Shark Injector, the easiest solution to add power and torque. Dyno-tuned by BMW legend Jim Conforti, this software optimizes high-octane (91+) pump gas, enhancing mid-range torque and high-RPM horsepower. The rev limit is raised, and fuel and spark maps are fine-tuned for improved performance without compromising driveability. A true plug-and-play solution, each unit is shipped with detailed instructions, ensuring a swift installation in just an hour.

  • Dyno-tuned by BMW legend Jim Conforti for optimal performance
  • Designed for high-octane (91+) pump gas
  • Boosts mid-range torque and high-RPM horsepower
  • Fine-tuned fuel and spark maps for enhanced power
  • Maintains driveability and improves responsiveness
  • Easy plug-and-play installation with detailed instructions
  • Rev limit raised to 7,000 RPM for an exhilarating driving experience
  • Compatible with NORTH AMERICAN SPEC BMWs
  • +4 HP at 6,100 RPM, +7 torque @ 3,400 RPM

Unleash the full potential of your BMW's M54 engine with the Shark Injector, designed for a superior driving experience.

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Shark Injector - Corporate Logo
T#:387566
Part#: N745Z425
Ships on Aug 11, 2026
Sale - Save 10% $ 349.00

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

$ 314.10 USD
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Sale - Save 10%
$ 349.00

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

$ 314.10 USD
Free Shipping

Unlock the full potential of your BMW effortlessly with the Shark Injector, offering the easiest way to enhance power and torque. Tuned by BMW legend Jim Conforti, this software optimizes high-octane pump gas for mid-range torque and high-RPM horsepower. The Shark Injector is designed for seamless installation, providing a true plug-and-play performance solution that takes only an hour. Enjoy improved performance without compromising driveability.

  • Easy Installation: Simply connect the Shark Injector using a battery charger, push a button, and witness a quick, hassle-free installation process.
  • Performance Boost: Gain an impressive 7 HP at 5,800 RPM, 7 lb/ft of torque at 4,700 RPM, and experience a raised rev limit to 7,000 RPM.
  • Enhanced Driving Experience: Jim Conforti's tuning improves engine response, removes the speed limiter, and elevates the driving experience under various throttle conditions.
  • North American Compatibility: Exclusively designed for North American SPEC BMWs; not suitable for Euro-SPEC BMWs.
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Shark Injector - Corporate Logo
T#:386540
Part#: SHARK-UPGRADE
In Stock
Sale - Save 10% $ 150.00

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

$ 135.00 USD
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Sale - Save 10%
$ 150.00

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

$ 135.00 USD
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You may be able to upgrade the Shark Injector file to another version to better meet your tuning needs. Depending on the model we may have better tunes for things such as intakes, larger air sensors, camshafts, headers, and others. For a small fee the current Shark Injector tune can be removed and a new file added instead (the original Shark file you were using would no longer be available). To do this, we need the car restored to stock settings with the current Shark Injector and then returned to us (updating via USB is not yet available). Sharks that were not Restored to stock cannot be upgraded and the unit will be returned to you (at your expense). We also perform other work on the Shark Injector while it is here, including diagnostic tests and re-packaging with the most current instructions. The Shark that you get back is virtually new and ready to be reinstalled!

To get started, review the catalog of current Shark Injector files for one that better matches your tuning spec.
1. Enter the new tuning file in the form below. Include any other relevant information.
2. Click the Update Price or Add To Cart button.
3. Complete the online transaction with your address and payment information.
4. A Turner Motorsport sales rep will contact you after your order has been submitted. Do not send in your Shark Injector until someone has contacted you with a reference number and return shipping address.

Turn-around time for upgrades is typically the same day we receive it. UPS Ground is the normal return shipping method unless you specify faster shipping on your order. 

Helpful Links:

  • Shark Injector File List - listing of all Shark Injector files by vehicle model. Select a file from this list to upgrade to.
  • Shipping Instructions - specific instructions for packaging and shipping. Also includes a contact form to include when you send back your Shark.
  • Emissions Waiver - some tunes require this emissions/smog waiver before we can program the new file to your Shark. These are noted in the catalog listing in the links above. Print and include this Waiver when you send in your Shark.

Shark Injector installation instructions

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Autel - Corporate Logo
T#:3529121
Part#: AUL1SENSORKT
In Stock
$ 243.99 USD
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$ 243.99 USD
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Autel - Corporate Logo
T#:2914116
Part#: AL329
Ships in 1 Business Day
$ 49.99 USD
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OBDII Code Reader

JB Racing - Corporate Logo
T#:878
Part#: 520-010S-S873G
Ships in 9 Business Days
$ 1,488.61 USD
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$ 1,488.61 USD
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This lightweight aluminum flywheel w/ Heavy Duty "sprung-hub" clutch package is the best-engineered solution for E46 325 and 330 models with the 6-speed transmission, Z4 2.5/3.0, and Z4 M Roadster and M Coupe. Instead of picking a clutch from another car that may or may not work at all, the engineers at JB Racing have taken all of the guess work out of this upgrade and incorporated a Sachs sport sprung-hub clutch with the correct pressure plate and combined it with their most-popular aluminum lightweight flywheel. The Sachs HD clutch disc has a sprung hub to minimize noise and vibration and organic linings to give the feel and engagement of a stock clutch. Mixing and matching of the incorrect clutch, pressure plate, and flywheel components can lead to inconsistent engagement and feel -- why make your clutch feel worse?

In addition, the Sachs HD pressure plate will clamp with greater force -- allowing approximately 350 ft-lbs of torque, which makes it an obvious upgrade from the stock clutch kit. And with the aluminum flywheel weight savings is substantial over the stock dual-mass flywheel - which allows your motor to spool up faster and transmit more HP to the ground.

Because Sachs is an OE supplier to most German cars, replacement parts are just a phone call away. This kit uses the stock throw-out bearing (included in the price).

Z4 M Sport Clutch and Flywheel Applications:
2006-2008 E85 Z4, E86 Z4 Z4 M Roadster, Z4 M Coupe
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Autel - Corporate Logo
T#:2914129
Part#: AL529HD
Ships in 6 Business Days
$ 264.99 USD
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Autel’s latest member of its code reader family of tools, the AL529HD can not only diagnose OBDII/EOBD-compatible vehicles but also heavy duty vehicles utilizing SAE-J1939 and SAE-J1708 protocols.
Shark Injector - Corporate Logo
T#:339102
Part#: TMS1875
Ships on Aug 11, 2026
Sale - Save 10% $ 349.00

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

Starting at $ 314.10 USD
Free Shipping
Sale - Save 10%
$ 349.00

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

Starting at $ 314.10 USD
Free Shipping
  • Unlock torque and horsepower
  • Smoother engine with less hesitation
  • Improved throttle response
  • Rev limit increased to 7000
  • Top speed limiter removed
  • Installs in minutes!
  • Performance software is a must-have upgrade on your BMW and you won't find an easier and better software solution than the Shark Injector. Developed by BMW tuning expert Jim Conforti, this device plugs into the car's diagnostic port and flashes new performance files into your car's engine computer (ECU). There's no removal of the ECU and shipping, no cables, no laptop required - only a battery charger! Installation takes just a few minutes and your engine will perform like never before!

    The M54 performance software was developed on the dyno to create maximum power and torque using premium 91+ octane fuel while maintaining BMW reliability and smoothness. The software makes changes to the ECU's maps and algorithms for fuel injection, ignition timing, VANOS and camshaft movement, and transitional fueling. We modify the maps for part throttle and full throttle so you get better response and more torque at all RPM. We also raise the rev limit to 7,000 and remove the top speed limiter. By fine tuning these maps we've been able to improve the M54 engine beyond what BMW did by making more power and torque and a smoother-running engine.

    The Shark Injector plugs into the diagnostic port inside the Z4 cabin. With the battery charger supplying power, press the Upgrade button and within minutes the ECU is reflashed with the new performance tune. No other software product on the market comes close to how easy it is to install. You can use the Restore button to re-install the stock BMW software at any time. Detailed instructions are included. Other tuners require you to remove the ECU and ship it to them or use a laptop to read and write a new file. The Shark Injector is ready to install right out of the box! A planned future upgrade will allow you to use the USB port to load different performance files.

    Z4 2.5 (M54 engine) Performance Software Peak Gains

    HP Gain Up To + 7 @ 5800 RPM

    Torque Gain Up To + 7 @ 4700 RPM

    New Rev Limit7000 RPM


    M54 engine dyno chart

    Z4 3.0i (M54 engine) Performance Software Peak Gains

    HP Gain+ 4 @ 6100 RPM

    Torque Gain+ 7 @ 3400 RPM

    New Rev Limit7000 RPM


    M54 engine dyno chart
    Shark Injector Installation Instructions

    (click to expand)

    Shark Injector installation instructions
    A capable battery charger is required for the installation. The charger provides backup power supply to the regular car battery during installation. It must be capable of holding a continuous 10amp charge for the full installation (15-20 minutes).
    The minimum octane fuel for this software is 91.Shark Injector FAQ

    (click to expand)

    Shark Injector FAQ
    This item fits the following BMWs:
    2003-2005 E85 BMW Z4 2.5i Z4 3.0i

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    Autel - Corporate Logo
    T#:5663676
    Part#: AULTS508K1
    Ships in 6 Business Days
    $ 739.99 USD
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    $ 739.99 USD
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    Pinpoint and replace bad TPMS Sensors


    Autel - Corporate Logo
    T#:2914145
    Part#: BT506
    Ships in 6 Business Days
    $ 402.99 USD
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    $ 402.99 USD
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    The BT506 is a battery and electrical system analysis tool that use as Adaptive Conductance an advanced battery analysis method, to produce a more accurate examination of the battery’s cold cranking ability and reserve capacity, vital to determining a b
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    Autel - Corporate Logo
    T#:2914136
    Part#: MSULTRA
    Ships in 6 Business Days
    $ 12,306.99 USD
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    The MaxiSys Ultra is Autel’s most ambitious diagnostics tablet designed to maximize technician intelligence.
    Autel - Corporate Logo
    T#:2914140
    Part#: MV400-55
    Ships in 6 Business Days
    $ 405.99 USD
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    This premier Autel MaxiVideo MV400 digital videoscope is an ideal tool for examining difficult- to- reach areas normally hidden from sight.

    Autel - Corporate Logo
    T#:40782369
    Part#: AUL-TS508WFK-1
    Ships in 6 Business Days
    $ 419.99 USD
    Free Shipping on orders $49 and up
    The TS508WFK-1 is a TPMS service tool that features Quick and Advance modes of TPMS service and a TPMS status screen. It can read/activate/relearn all known sensors, has 4 methods of MX-Sensor programming, and performs placard value resets on supported vehicles. This scanner displays on-tool MX-Sensor relearn procedures including OBDII and can do key fob signal tests. The TS508WFK-1 includes an OBDII cable, a 1-year tool warranty, and free lifetime software updates are available with purchase.
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    JB Racing - Corporate Logo
    T#:40748575
    Part#: 520010240SGA
    Ships on Aug 17, 2026
    $ 868.00 USD
    Free Shipping on orders $49 and up
    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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