034 Motorsport 2-Piece Floating Front Brake Rotor Upgrade for BMW G8x M2/M3/M4
- Description
- Fitment
- Refund Policy
The 034Motorsport 380mmx36mm 2-Piece Floating Front Brake Rotor Upgrade for BMW G8x M3/M4 is a complete replacement brake rotor, designed to work flawlessly with the factory front calipers. This is a true high-performance and racing-quality rotor that won’t let you down when you need hard braking the most! Weighing in at approximately 30.0 lbs, our lightweight design retains proper thermal mass in the rings to adequately capture heat while utilizing 72 enhanced directionally curved vanes to forcefully flow cool air through the rotor to dissipate heat.
NVH Levels: None-Low
NVH is the measurement of how much noise, vibration, & harshness gets transmitted into the cabin of your vehicle. The 034Motorsport 2-Piece Brake Rotors transfer none to low amounts of noise to the cabin based on user feedback. This NVH is relative to the brake pad installed with the brake rotor. Different brake pads will have different resonances when passing over a rotor with slots, which can sometimes make a slight whirring noise. The sounds from these rotors are the direct result of the performance improvements they make to the braking. The J-slots release gas from under the brake pad, and the high-density directional aero veining in the rotors move substantial air, all resulting in more sounds of air moving. The installation of other suspension components can also affect the NVH transferred. NVH is subjective, so some users may find NVH to be increased or decreased from our rating. If you are experiencing higher than quoted NVH with this product, please email techsupport@034motorsport.com for further assistance.
Product Description:
The 034Motorsport 380mmx36mm 2-Piece Floating Front Brake Rotor Upgrade for BMW G8x M3/M4 is a complete replacement brake rotor, designed to work flawlessly with the factory front calipers. Upgrading your front rotors will increase overall braking performance in street, track, and HDPE driving conditions, as they keep your brakes cool and strong all day long!
Weighing in at approximately 30.0lbs, our lightweight design retains proper thermal mass in the rings to adequately capture heat while utilizing 72 directionally curved vanes to forcefully flow cool air through the rotor to dissipate heat.
Advantages of J-Slot over Drilled Rotors:
Typically, OEM rotors that are drilled are first cast and then drilled, which creates additional stress points that weaken structural integrity, making them more prone to cracking as they go through heat cycles and wear over time. To address these concerns, 034Motorsport engineers opted for a J-Slot design over a drilled rotor, which effectively clears contaminants from the pad and rotor surfaces while allowing for hot pad outgassing without reducing the structural integrity of the rotor.
True 2-Piece Design:
While BMW employs a 2-piece rotor design utilizing pins in which the rotor ring can slightly expand and contract compared to the rotor hat, the rotor ring is not fully floating. Additionally, the outer friction surface cannot be replaced individually, adding unnecessary cost to brake services.
034Morsport employs a high-strength steel bobbin-style floating 2-piece rotor design versus the BMW OEM pin-style design. 034Motorsport’s 2-Piece Rotors allow the rotor ring to “float” on the central hat while the rotor ring expands and contracts, preventing the likelihood of cracks and rotor warpages in high-performance driving scenarios.
The central hat on 034Motorsport 2-Piece rotors is crafted from 6061-T6 aircraft-grade aluminum, while the brake disc is made from a proprietary alloy that is able to withstand extreme braking temperatures while maintaining structural integrity. The high carbon content of the brake disc also allows for the rotor to take a lot of heat and dissipate it quickly. The brake disc utilizes 72 directionally curved vanes within the rotor itself to channel cool air through the rotor, significantly improving heat dissipation and thermal efficiency without reducing thermal mass.
Features:
- Lightweight Construction (30.0lb 034Motorsport Rotor), the Same Weight as OEM, but with Improved Metallurgy and Thermal Capacity, despite Lightweight Construction to Match OEM Rotor Lightweight Design Elements
- Floating, 2-Piece Design
- Aerospace Grade Aluminum Hats
- CM-250 Special Alloy Rotor Rings
- J-slotted Friction Face
- OEM Fitment & Functionality
- 72 Curved Vanes Force Cooling Air through Brake Disc
- Floating Bobbins Mounting System
- Replaceable Rotor Rings
- Lower Long-term Maintenance Cost
OE Part Interchange:
- 34 10 7 889 661 (Left)
- 34 10 7 889 662 (Right)
What's Included:
- 380x36 Left Rotor
- 380x36 Right Rotor
- Installation and Break-in Instruction Sheet
**Please Note: Type III hard anodizing of aluminum is considered as a functional surface coating process. While we always aim for color consistency, color variations may exist from batch to batch due to the nature and variables in the anodizing process.
| Make | Model | Years | Chassis | Engine |
|---|---|---|---|---|
| BMW | M2 | 2023-Present | G87 | S58 3.0L |
| BMW | M3 | 2021-Present | G80 | S58 3.0L |
| BMW | M3 Competition | 2021-Present | G80 | S58 3.0L |
| BMW | M3 Competition xDrive | 2021-Present | G80 | S58 3.0L |
| BMW | M4 | 2021-Present | G82 | S58 3.0L |
| BMW | M4 Competition | 2021-Present | G82 | S58 3.0L |
| BMW | M4 Competition xDrive | 2021-Present | G82 | S58 3.0L |
| BMW | M4 Competition xDrive | 2021-Present | G83 | S58 3.0L |
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
