HKSTUDIE Exhaust for BMW M3/M4 G80/G81/G82/G83

– FEATURES –

A one-of-a-kind tail tip design

A specially designed tail tips paid homage to the legendary “BMW 3.0 CSL“. It has a thick-walled slash-cut tail tips, emphasizing the texture of the edges, and the surface is blasted to express a dull glossy finish. Features a sound deadening inner slits to create a one-of-a-kind tail tip design.

Gentle yet powerful sound

The OEM exhaust of the G8X generation M produces a sporty sound that is distinctive of the M series. Since replacing only the main muffler does not produce a significant change in sound, the HKSTUDIE exhaust features a layout that deletes the middle muffler. The unique sound tuning based on frequency analysis has achieved gentle yet powerful sound.

Compliant with Japan’s vehicle inspection regulations

Although it gives off a powerful sound, it still meets the strict sound regulation in Japan. This products can be used safely for daily use and is compliant with Japan’s vehicle inspection regulations.

Reduce exhaust pressure by up to 35%

Optimized pipe layout and a main muffler without restrictions reduce exhaust pressure by up to 35% compared to the OEM muffler. This results in increased boost responsiveness and higher output at high RPM range and increases power output by up to 5kw and torque by up to 15Nm.

 A 2-year or 30,000 km product warranty

By manufacturing in-house at our factory in Japan and conducting strict quality control, we are able to offer a 2-year or 30,000 km product warranty from the time of purchase.　

– CONFIGURATION –

Certification Number	JARI10240006P
Main Material	SUS304
Tail Tips Outer Diameter	101.6mm (Quad Exit Style)
Main Pipe Diameter	70mm x2⇒60.5mm x2
Sound Level (OEM)	94dB (Idle: 63dB)
Sound Level (HKSTUDIE)	97dB (Idle: 64dB)
Minimum Ground Clearance	135mm (#2 Mid Pipe)

　

– PERFORMANCE –

35% reduction in exhaust resistance (max.)

By optimizing the layout, adopting a straight pipe without squeezing and the internal structure of the main muffler without restrictions, exhaust resistance is significantly reduced compared to the OEM exhaust as shown in the graph below as a result of in-house testing.

 Flow Bench Testing

　

 Power/Torque Curve

　

　

Increases output ＋5kw and torque +15Nm

Lowering exhaust pressure leads to higher engine power output. As shown in the figure below, the response of the turbo boost is improved in the low rpm range, and torque is increased by up to 15Nm. As for power output, the better exhaust flow leads to more power at higher engine speeds, increasing the power by up to 5kw. All tests at our headquarters were conducted using vehicles in stock condition except for the exhaust system. The difference in power output between OEM and HKSTUDIE exhaust systems will widen further when the ECU is analyzed and tuned to increase power output.

　

 Sound Features

Exhaust sound tuning based on frequency analysis

Generally, low-frequency noise below 100 Hz are said to be unpleasant and oppressive, and are described as drone sounds in the cabin of a car. HKSTUDIE produced various prototype exhausts and conducted sound frequency analysis.

General exhaust with internally constructed mufflers will have a marked drone sound (see the graph below around 100 Hz), while the OEM exhaust successfully muffles the low-frequency sound.

This drone sound is especially noticeable when cruising at 80 to 100 km/h on highways. HKSTUDIE exhaust has newly designed the inside of the muffler silencer to suppress the muffled sound and to emphasize the mid-frequency sound above 200Hz, which is considered to be a sporty sound.

Thanks to its gentle sound during cruising, the driver and passengers will not feel any discomfort, and once the driver steps on the gas pedal, they will enjoy the powerful sound.

　

　

Exhaust Sound Level

In-house measurements of UN-ECE R51, a rough guide to the volume of an exhaust system, are shown below. It is a comparison of three different types of mufflers: a stock exhaust, a prototype of a general muffler, and an HKSTUDIE exhaust.

dB(A)	Left		Right
	Partial Throttle	Throttle Off	Partial Throttle	Throttle Off
OEM	85.9	93.7	89.0	94.0
HKSTUDIE	88.5	95.8	92.2	96.6
General	84.6	92.6	87.0	92.6

　

– DETAILS –

 Exclusive tail tip design

 Sound muffling inner slits

 High-quality exhaust flap reputed by auto manufacturers

 R51-03 certification plate

 Welding by very skilled Japanese “Takumi” craftsman

　

　

– REMARKS –

 Japanese Exhaust Noise Regulation

This product has been inspected and certified for UN-ECE R51.03. The vehicles equipped with the exhaust certified by R51.03 is applied the Japanese noise regulation of year 2016, and the noise value indicated on the performance confirmation label shall be the standard value, and the standard value + 5dB shall be the regulation value. (In the case of this product, the noise value indicated on the performance confirmation plate is 97 dB, so the Japanese exhaust noise regulation limit value is 102 dB)

The measurement RPM for exhaust noise is taken at 3,750 rpm, which is the RPM indicated in the remarks column of the vehicle inspection certificate. The measurement point is as described in R51-03. As shown in the figure above, the microphone should be placed at a position 0.5 m away from and at a 45-degree angle to the furthest outside exhaust tip from the longitudinal centerline of the vehicle.

Vehicle Fitment

• 2021+ BMW M3 G80/G81
• 2021+ BMW M4 G82

If you're unsure whether this will fit your vehicle, contact our team of experts via email at support@zerooffset.com.au and send through a few photos of the car for us to verify fitment.

Check Note   

All pictures shown are for illustration purposes only. Unauthorised reproduction and distribution are strictly prohibited. Actual product may vary due to product enhancements.

Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.

We are just as keen as you to start your new modification journey. Our team works tirelessly on getting all your orders fulfilled as soon as possible.

When will I receive my item?

Dispatch Times

All orders are usually processed and dispatched within 1-3 business days of the order being confirmed and contingent to stock availability. Please note, during high sales periods, there may be some delays. For more accurate shipping times, please get in contact with us.

Delivery Times

Once dispatched, delivery time will vary dependent on its destination. For most states including VIC, NSW, QLD and SA, we expect delivery times ranging between 1-5 business days. For WA, NT and TAS we do expect slightly longer freight times. Zero Offset cannot be held accountable to reasonable shipping delays incurred by the freighting company.

While we do our best to have your order delivered within the listed timeframes above, we're not able to guarantee an exact delivery date.

Please note items from your order may be delivered separately. You can keep up to date with delivery times via the tracking link sent to you.

Why is my item taking longer than usual?

Sometimes things go astray, and it is completely out of our control. However, we are here to help the best we can. If your item has not been delivered and the ETA for delivery has well and truly passed (more than 10 business days past the expected delivery date), get in contact with the courier and lodge claim. Then contact us and let us know what is happening so we can monitor it on our end as well. If the item is deemed ‘lost’ we will send out a replacement to you. If a replacement is unavailable, we will issue store-credit, refund or initiate an exchange for another item from our store. Please note, that the courier must officially deem the package as "lost" before we can send out a replacement.

My package arrived damaged

We are sorry to hear this. Don’t panic, we are here to help. To resolve any claims as quickly as possible, please send us photos of the items damaged in transit. You must notify us of the damages within 7 days of delivery. This will ensure that the claim damages fall within the warranty window. Please contact our team through the Contact Form. Our team will then request photos and other evidence to progress the claim.

The tracking says delivered, but I have not received the item

Unfortunately, this can occur for many reasons including parcel mishandling, theft or system error made by the Courier. In this event, we urge you to contact the courier service immediately. For those who have selected our package protection at checkout, we will send out a replacement to you without delay. If a replacement is unavailable, we will issue store-credit.

Please note: Each claim is assessed by our team and reviewed thoroughly to ensure a timely resolution for any of the delivery issues. Zero Offset reserves the right to reject any claims that do not meet the criteria, therefore the customer will need to seek resolution through the courier or local authorities in the event of delivery theft.

Rural Areas Shipping

Our shipping prices are fixed for Metro areas in each state. However, additional shipping charges may apply if the postal address is in a rural area.

Return Postage

If there is a change of mind return or exchange, the buyer is responsible for all return postage fees and costs.

1. General Warranty Policy

Shop with confidence knowing that Zero Offset is committed to the quality of our products. Our warranty policies cover manufacturing defects in accordance with the applicable product warranty terms and Australian Consumer Law (ACL).

Where a product is eligible for a warranty remedy, the available remedy will depend on the nature of the issue and the requirements of applicable law. This may include repair, replacement, a refund or another appropriate remedy.

If you experience an issue with a Zero Offset product and believe it may be covered under the applicable warranty, please contact our team via our Contact Us page to discuss your claim.

Please note the following conditions:

• Proof of purchase must be provided (e.g. your Zero Offset order number, #XXXXX) before we can assess your warranty claim.
• Cosmetic damage and general wear and tear resulting from normal product use are not covered under our voluntary warranty, except where required by applicable law.
• Damage or failures resulting from improper care, maintenance, handling or use may not be covered under our voluntary warranty, subject to the ACL.
• The use of unsuitable or acid-based cleaning products that damage or adversely affect automotive products may affect voluntary warranty coverage for the resulting damage. Please contact our team for recommended product care and maintenance instructions.

Nothing in this policy excludes, restricts or modifies any rights or remedies available to consumers under the ACL or other applicable legislation.

2. Parts & Accessories Warranty

Zero Offset offers a one-year voluntary warranty on Zero Offset body kits and accessories, including pre-painted products. This warranty covers manufacturing defects only and does not extend to Zero Offset products purchased second-hand, subject to any rights available under applicable law.

This voluntary warranty does not cover damage, defects or failures resulting from:

• Improper handling, installation or fitment.
• General wear and tear.
• Breakages, scuffs, scratches or other damage caused by external impacts.
• Improper care, maintenance or use.
• Modifications, alterations or repairs carried out incorrectly.

Where a product has been installed incorrectly or modified, any warranty claim may be assessed to determine whether the reported issue resulted from the installation, modification or repair.

All other branded products sold by Zero Offset are subject to the applicable manufacturer's warranty terms and conditions. We recommend reviewing the relevant manufacturer's warranty before purchasing. If you require clarification, please contact our team, who will be happy to assist.

Zero Offset is not responsible for extending a third-party manufacturer's voluntary warranty beyond the terms offered by that manufacturer. However, nothing in this policy limits any rights or remedies you may have against Zero Offset under the ACL.

3. Self-Installation Disclaimer

Customers who choose to install products themselves, or engage a third party to carry out the installation, do so at their own risk with respect to installation-related damage or failures.

Zero Offset cannot be held responsible for damage, defects, product failures or other issues to the extent that they are caused by or result from incorrect installation, improper fitment, misuse or unauthorised modification, subject to applicable consumer rights under the ACL.

Customers are responsible for ensuring that products are installed properly, using appropriate tools, equipment and installation procedures. At all times, we recommend reaching out to our team if you have any questions.

Recommended Installation – Dealers & Installers Across Australia

To ensure the best possible fitment and minimise the risk of installation-related issues, Zero Offset recommends having your products installed by a professional.

We work with a network of dealers and installers across Australia who can assist with the correct installation and fitment of your products. We strongly encourage customers to utilise our network to help minimise the risk of incorrect fitment, product damage and installation-related failures.

To find a dealer or installer near you, please visit our Zero Offset Dealers & Installers Directory.

Customers who choose to undertake installation themselves should ensure they have the appropriate knowledge, tools and equipment to complete the installation correctly.

Where a warranty claim relates to a product that has been self-installed or installed by a third party, Zero Offset may request relevant information and assess the product to determine the cause of the reported issue. If the failure is found to have resulted from incorrect installation or other installation-related factors, the claim may be excluded from coverage under the applicable voluntary warranty to the extent permitted by law.

Self-installation does not automatically void a customer's rights under the ACL. Where a product has a manufacturing defect or fails to meet an applicable consumer guarantee, the customer's rights will be assessed in accordance with the ACL and the circumstances of the claim.

Zero Offset recommends that products requiring specialist knowledge, tools or technical expertise be installed by a suitably qualified professional.

4. Installation Warranty

Where a customer chooses to have their parts installed by Zero Offset in-store, we provide a one-year voluntary warranty on the installation work performed by our team.

This warranty covers defects in workmanship relating to the installation carried out by Zero Offset. It does not extend the manufacturer's product warranty or automatically cover defects in the product itself.

If you believe there is an issue with an installation performed by Zero Offset, please contact our team as soon as possible. We recommend that you do not attempt to rectify the issue yourself or engage another party to alter, remove or repair the installation before we have had an opportunity to assess it.

Unauthorised tampering or subsequent work carried out by a third party may affect coverage under this voluntary installation warranty to the extent that it causes or contributes to the reported issue.

This voluntary installation warranty does not cover issues arising from:

• Improper handling, care or maintenance after installation.
• General wear and tear.
• Breakages, scuffs, scratches or other damage caused by external impacts.
• Removal, alteration, tampering or repair by a third party, including the customer, where this causes or contributes to the issue.
• Natural disasters or other external events beyond our reasonable control, to the extent permitted by law.

If you have purchased extended care, the applicable terms and conditions of that plan will also apply. In the event of any inconsistency, applicable consumer rights under the ACL will prevail.

5. Warranty Claims & Assessment

All warranty claims are subject to assessment and must be supported by proof of purchase and any other reasonable information required to investigate the reported issue.

Depending on the circumstances, Zero Offset may request photographs, installation details, maintenance records or an inspection of the product.

Each claim will be assessed on its individual merits, including the cause of the reported failure and any applicable manufacturer warranty conditions.

Where a claim is accepted, the available remedy will be determined in accordance with the applicable warranty terms and the ACL. Nothing in this policy is intended to exclude, restrict or modify any consumer guarantee, right or remedy that cannot lawfully be excluded, restricted or modified under Australian law.

Shop with confidence at Zero Offset. If there is something wrong with the item, or the item isn't right for you, then tell us and we will do our best to assist. Before you get in contact, see our policy below.

How do I return or exchange my order?

If you have placed an order with us, and you decide that the item you have purchased from Zero Offset is not for you based on one of the following reasons below, you can return or exchange it within 30 days of receiving the product once approved by our team. The buyer is responsible for the return postage.

Factory fault or manufacturing defect

Sometimes things may go wrong during production, and that is okay. If your item arrives with a factory fault or manufacturing defect, please email photos to support@zerooffset.com.au with your order number. We urge you to get in contact within 7 days of delivery for our team to best assess the item. If the item is deemed defective, we will issue a replacement sent to you. If a replacement is unavailable, we will issue store-credit, refund or initiate an exchange for another item from our store.

Change of mind

We are confident you will love your new Zero Offset products. However, if you decide that this is not the product for you, then you may return the item if the product(s) meet the conditions set out in this policy. The products must be unused, in their original condition and in their original packaging.

We cannot accept a return if:

• Used items - products must be unused, in their original condition and in their original packaging
• The item has been fitted – screwed, drilled, cut etc.
• You have already returned or exchanged the item once previously (an item can be returned once per order. This does not apply if the original return or exchange was due to a factory fault or manufacturing defect)
• The order was purchased during a promotion where T & C's specified that the item is excluded from the returns policy
  
  

Is Packaging Required?

Zero Offset requires all returns & exchanged items to be re-packaged in its original packaging, including any hardware or promotional items such as stickers, booklets etc. If the returned item is not packaged accordingly, Zero Offset reserves the right to withdraw the order for refund or exchange. You will need to pay for any subsequent re-shipping fees.

Pre-order Cancellation

If you have secured an item(s) through our pre-order service and would like to cancel, we will offer a full refund if the expected time of delivery is delayed by more than two months from its original expected delivery date. For example, if the item was scheduled for mid-late July, you will be eligible for a full refund if the expected delivery date is pushed past the start of October. If our team does notify you of the delay within this period, to which you agree to keep the order with us, the period will then restart two months from the new expected delivery date.

However, if you would like to cancel a pre-order within this new period, the pre-order will be subject to a 20% cancellation fee if the item was paid in full. Please also be advised, if a deposit was made to secure an item(s) and you choose to cancel, you will forfeit that deposit.