Genuine BMW
Genuine BMW BMW G09 XM OEM Front Brake Discs/Rotors Pair
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Pay in 3 interest-free instalments
Spread the cost of your purchase into 3 interest-free instalments. The first payment is made at point of purchase, with remaining instalments scheduled automatically every 30 days. No interest or fees. Select the Klarna option and enter your debit or credit card information. To check your eligibility, Klarna will perform a soft search with a credit reference agency. This will not affect your credit score.
No interest. No fees. No impact to your credit score.
- A new way to pay that's an alternative to a credit card.
- 3 instalments gives you flexibility to shop without interest or hidden fees. - Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort.
You must be 18+ and a UK resident to be eligible for this credit offer. Pay in 3 Terms and Conditions
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Review your latest purchases and make payments in the Klarna app or online.
● Download the Klarna app: https://www.klarna.com/app
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With Klarna, you are always covered through Klarna’s Buyer Protection policy. Modern safeguards protect your information to prevent unauthorized purchases.Frequently asked questions
Visit our FAQ (https://www.klarna.com/uk/customer-service/) page to find out more about using Klarna.About Klarna
At Klarna, we have a relentless focus on creating the best shopping experience in the world. We believe payments are so much more than just a way to send money. That’s why our smooth checkout options give you more time and control so you can focus on the things you love.● More than 90 million shoppers are using Klarna.
● 200,000 retailers are working with us worldwide.
● We’re one Europe’s largest banks and we’ve been powering online checkouts for over 15 years.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
R44 Performance Ltd. is not a lender and acts only as an introducer. The credit product is provided by Klarna Bank AB (publ). Credit is only available to permanent UK residents aged 18 and over, depending on their status. Terms and conditions apply. Please note that Pay in 30 days and Pay in 3 instalments are not regulated by the FCA.
Choose options
BACKORDER - AVAILABLE
Pay later options
Spread the cost of your order. Choose your provider at checkout — nothing to set up here.
KLARNA FINANCE
Part 1: How it works
Shop now. Pay later with Klarna.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
Step 1: Add products to your cart and select “Klarna” when you check out
Step 2: Enter a few personal details and you’ll know instantly if you’re approved
Step 3: Klarna will send you an email confirmation and reminders when it’s time to pay and you can manage your orders and payments in the Klarna app.
Part 2: Payments information
Pay in 30 days
Make your purchase today so you can try before you buy. Only pay for what you keep. Pay up to 30 days later. No interest. No fees. No impact to your credit score.
Paying after delivery allows you to try before you buy and is the easiest way to shop online.
- Complete the payment in full after purchase at no added cost.
- Report returns directly in our app and only pay for the items that you keep.
- Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort
You must be 18+ and a UK resident to be eligible for this credit offer. Pay Later Terms and Conditions
Pay in 3 interest-free instalments
Spread the cost of your purchase into 3 interest-free instalments. The first payment is made at point of purchase, with remaining instalments scheduled automatically every 30 days. No interest or fees. Select the Klarna option and enter your debit or credit card information. To check your eligibility, Klarna will perform a soft search with a credit reference agency. This will not affect your credit score.
No interest. No fees. No impact to your credit score.
- A new way to pay that's an alternative to a credit card.
- 3 instalments gives you flexibility to shop without interest or hidden fees. - Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort.
You must be 18+ and a UK resident to be eligible for this credit offer. Pay in 3 Terms and Conditions
Part 3: About Klarna
Pay online or in the app
Review your latest purchases and make payments in the Klarna app or online.
● Download the Klarna app: https://www.klarna.com/app
● Log in online: https://app.klarna.com/login
● Chat with customer service: https://www.klarna.com/uk/customer-service/
Safe and secure
With Klarna, you are always covered through Klarna’s Buyer Protection policy. Modern safeguards protect your information to prevent unauthorized purchases.Frequently asked questions
Visit our FAQ (https://www.klarna.com/uk/customer-service/) page to find out more about using Klarna.About Klarna
At Klarna, we have a relentless focus on creating the best shopping experience in the world. We believe payments are so much more than just a way to send money. That’s why our smooth checkout options give you more time and control so you can focus on the things you love.● More than 90 million shoppers are using Klarna.
● 200,000 retailers are working with us worldwide.
● We’re one Europe’s largest banks and we’ve been powering online checkouts for over 15 years.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
R44 Performance Ltd. is not a lender and acts only as an introducer. The credit product is provided by Klarna Bank AB (publ). Credit is only available to permanent UK residents aged 18 and over, depending on their status. Terms and conditions apply. Please note that Pay in 30 days and Pay in 3 instalments are not regulated by the FCA.
BACKORDER - AVAILABLE
Pay later options
Spread the cost of your order. Choose your provider at checkout — nothing to set up here.
KLARNA FINANCE
Part 1: How it works
Shop now. Pay later with Klarna.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
Step 1: Add products to your cart and select “Klarna” when you check out
Step 2: Enter a few personal details and you’ll know instantly if you’re approved
Step 3: Klarna will send you an email confirmation and reminders when it’s time to pay and you can manage your orders and payments in the Klarna app.
Part 2: Payments information
Pay in 30 days
Make your purchase today so you can try before you buy. Only pay for what you keep. Pay up to 30 days later. No interest. No fees. No impact to your credit score.
Paying after delivery allows you to try before you buy and is the easiest way to shop online.
- Complete the payment in full after purchase at no added cost.
- Report returns directly in our app and only pay for the items that you keep.
- Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort
You must be 18+ and a UK resident to be eligible for this credit offer. Pay Later Terms and Conditions
Pay in 3 interest-free instalments
Spread the cost of your purchase into 3 interest-free instalments. The first payment is made at point of purchase, with remaining instalments scheduled automatically every 30 days. No interest or fees. Select the Klarna option and enter your debit or credit card information. To check your eligibility, Klarna will perform a soft search with a credit reference agency. This will not affect your credit score.
No interest. No fees. No impact to your credit score.
- A new way to pay that's an alternative to a credit card.
- 3 instalments gives you flexibility to shop without interest or hidden fees. - Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort.
You must be 18+ and a UK resident to be eligible for this credit offer. Pay in 3 Terms and Conditions
Part 3: About Klarna
Pay online or in the app
Review your latest purchases and make payments in the Klarna app or online.
● Download the Klarna app: https://www.klarna.com/app
● Log in online: https://app.klarna.com/login
● Chat with customer service: https://www.klarna.com/uk/customer-service/
Safe and secure
With Klarna, you are always covered through Klarna’s Buyer Protection policy. Modern safeguards protect your information to prevent unauthorized purchases.Frequently asked questions
Visit our FAQ (https://www.klarna.com/uk/customer-service/) page to find out more about using Klarna.About Klarna
At Klarna, we have a relentless focus on creating the best shopping experience in the world. We believe payments are so much more than just a way to send money. That’s why our smooth checkout options give you more time and control so you can focus on the things you love.● More than 90 million shoppers are using Klarna.
● 200,000 retailers are working with us worldwide.
● We’re one Europe’s largest banks and we’ve been powering online checkouts for over 15 years.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
R44 Performance Ltd. is not a lender and acts only as an introducer. The credit product is provided by Klarna Bank AB (publ). Credit is only available to permanent UK residents aged 18 and over, depending on their status. Terms and conditions apply. Please note that Pay in 30 days and Pay in 3 instalments are not regulated by the FCA.
Restore the braking system on your BMW G09 XM with this pair of Genuine BMW OEM Front Brake Discs, measuring an substantial 420 x 40mm and supplied as a complete left and right front axle pair.
This package includes BMW part number 34108840339 for the front left and 34108840340 for the front right, providing the correct Genuine BMW replacement brake rotors for compatible G09 XM applications.
At 420mm in diameter and 40mm thick, the XM's front brake discs are substantial components designed around the braking requirements of BMW M's high-performance luxury SUV. When the original rotors require replacement, fitting Genuine BMW components retains the correct dimensions, left/right configuration and compatibility with the vehicle's factory braking system.
Sold as a pair, this package allows both front brake discs to be replaced together during a complete front brake service.
Key Features
- 100% Genuine BMW OEM brake discs
- Designed for the BMW G09 XM
- Complete pair for the front axle
- Includes front left and front right brake rotors
- Large 420 x 40mm disc dimensions
- Correct left and right-specific Genuine BMW components
- Direct replacement for the corresponding factory brake discs
- Designed for the original BMW XM braking system
- Ideal for routine brake servicing and replacement
- Supplied as two brake discs
- Genuine BMW manufacturing quality
Genuine BMW 420mm Front Brake Discs
The BMW G09 XM uses substantial 420 x 40mm front brake discs to meet the braking requirements of the high-performance XM platform.
With a diameter of 420mm, these are among the largest brake discs found on a modern BMW road car and form a critical part of the XM's factory front braking system.
When replacement becomes necessary, using Genuine BMW discs ensures the vehicle retains the correct rotor dimensions and compatibility with the corresponding factory braking components.
This package contains both sides required for a complete front axle replacement.
Includes Left & Right Front Brake Rotors
The G09 XM uses separate BMW part numbers for the left and right front brake discs.
This pair includes:
| BMW Part Number | Component | Position | Disc Size | Quantity |
|---|---|---|---|---|
| 34108840339 | Front Brake Disc | Front Left | 420 x 40mm | 1 |
| 34108840340 | Front Brake Disc | Front Right | 420 x 40mm | 1 |
Total Quantity: 2 Genuine BMW Front Brake Discs
Supplying both components together makes this package ideal for carrying out a complete front brake disc replacement rather than purchasing the left and right rotors individually.
Designed for the BMW G09 XM
These brake discs are Genuine BMW components for the G09-generation BMW XM.
The XM combines substantial vehicle mass with extremely high power outputs, placing considerable demands on its braking system. The large 420mm front rotors provide the braking surface required by the factory front brake setup.
Rather than fitting a generic aftermarket rotor, these Genuine BMW discs allow owners and workshops to replace the original components with the corresponding OEM parts.
Direct OEM Replacement
BMW part numbers 34108840339 and 34108840340 are designed as direct replacements for the corresponding original front brake discs on compatible G09 XM vehicles.
Using Genuine BMW brake components maintains the intended relationship between the brake disc, caliper, pads and associated braking hardware.
This makes the pair particularly suitable for:
- Routine brake servicing
- Worn front brake disc replacement
- Replacement following brake disc damage
- BMW specialist workshop servicing
- Vehicle restoration or repair
- Owners who want to retain Genuine BMW brake components
When Should BMW XM Brake Discs Be Replaced?
Brake disc life varies depending on mileage, driving conditions and how the vehicle is used.
Replacement may be required due to:
- Brake disc wear
- Reaching the specified minimum thickness
- Surface damage
- Excessive scoring
- Heat-related damage
- Brake vibration associated with the rotor
- Damage following prolonged use with worn brake pads
The condition and thickness of the discs should be inspected during brake servicing.
Given the performance and weight of the G09 XM, R44 Performance recommends having the complete braking system inspected by a suitably qualified BMW specialist when replacing major brake components.
Replace Front Brake Discs as a Pair
Brake discs on the same axle should generally be replaced together to maintain consistent braking characteristics between the left and right sides.
This package therefore contains both front rotors:
Front Left: 34108840339
Front Right: 34108840340
When carrying out the replacement, the condition of the front brake pads and associated braking hardware should also be inspected. Worn components can then be replaced at the same time where necessary.
Genuine BMW Brake Components
The braking system is one area where correct component specification is particularly important.
These discs are manufactured as Genuine BMW OEM components, providing the dimensions and vehicle-specific configuration intended for the G09 XM.
Choosing Genuine BMW replacement rotors provides:
- Correct 420 x 40mm dimensions
- Correct left and right-specific components
- Factory brake system compatibility
- Direct replacement fitment
- Genuine BMW manufacturing specification
- Original BMW part numbers
For an XM retaining its factory braking system, these discs provide the OEM solution when the original front rotors require replacement.
Compatibility
Designed for compatible:
- BMW G09 XM
Brake Disc Size: 420 x 40mm
Position: Front Axle
Quantity: 2 discs – one left and one right
As brake specifications can vary according to vehicle configuration and production date, we recommend confirming compatibility using your VIN and the BMW part numbers 34108840339 and 34108840340 before ordering.
Product Specifications
Manufacturer: Genuine BMW
Product: Front Brake Disc / Rotor Pair
Vehicle: BMW G09 XM
Position: Front Axle
Disc Size: 420 x 40mm
Quantity: 2
Front Left Part Number: 34108840339
Front Right Part Number: 34108840340
Installation: Direct OEM Replacement
Product Type: Replacement Brake Discs / Rotors
Professional Installation Recommended
Due to the importance of the braking system, these Genuine BMW front brake discs should be installed by a BMW specialist or suitably qualified technician.
During installation, the technician should also inspect the:
- Front brake pads
- Brake calipers
- Associated brake hardware
- Brake hoses and lines
- Opposite braking components
- General condition of the braking system
Correct installation and inspection help ensure the new rotors operate as intended with the rest of the factory BMW braking system.
Why Choose Genuine BMW XM Brake Discs?
The G09 XM is an exceptionally powerful and substantial BMW M vehicle, making correct brake component specification particularly important.
Choosing Genuine BMW front brake discs provides a straightforward replacement for the original components without changing the factory brake setup.
Key benefits include:
- Genuine BMW OEM components
- Specifically intended for the G09 XM
- Correct 420 x 40mm dimensions
- Separate left and right-specific rotors
- Complete front axle pair
- Direct replacement for the original brake discs
- Retains compatibility with the corresponding factory braking system
For owners looking to maintain their XM using original BMW parts, this pair provides the correct OEM approach to front brake disc replacement.
Why Buy From R44 Performance?
R44 Performance specialises in BMW G09 XM parts, Genuine BMW replacement components, braking upgrades and servicing parts, with an extensive range of products for the latest BMW M platforms.
When you purchase your Genuine BMW G09 XM Front Brake Disc Pair from R44 Performance, you'll benefit from:
- 100% Genuine BMW OEM brake discs
- Complete left and right front pair
- Specialist BMW G09 XM product knowledge
- Support with BMW part number and vehicle compatibility
- Extensive range of complementary BMW brake components
- Fast UK and worldwide shipping
- Secure packaging for heavy braking components
- Dedicated customer support before and after purchase
For a BMW G09 XM requiring replacement front rotors, this pair of Genuine BMW 420 x 40mm Front Brake Discs 34108840339 and 34108840340 provides the correct OEM solution for restoring the factory front braking system.
Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.
It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.
We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
All in stock products ship the same day if ordered before 2pm GMT
For out of stock items we will contact you with an estimated wait time if not otherwise specified above.
We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy
All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.
PLEASE NOTE
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our London workshop.
- Shipping estimates are based on courier delivery times and don't include time to despatch from our warehouse.