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20+ Years of Alcon Experience. FREE SHIPPING on all Brake Kits (USA) - Open M-F 8-5
20+ Years of Alcon Experience. FREE SHIPPING on all Brake Kits (USA) - Open M-F 8-5
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DBA3417S Street Series T2 Slotted Front Brake Rotor - 2021 BMW 430i

by DBA
SKU DBADBA3417S
Save 15% Save 15%
$289.57 USD
$289.57 USD - $289.57 USD
$289.57 USD
$245.02 USD
$245.02 USD - $245.02 USD
$245.02 USD

Lead Time: Good: 1-2 Days


Est. Ship By: Monday, August 31

Est. Delivery: Wednesday, September 02 - Monday, September 07


These estimates are based on recent lead times for this item and are not guaranteed. We will contact you if your order will be outside this estimate.

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Explore common maintenance and service items recommended.

Street Brake Fluids:

Racing/Hi Temp Fluids:

Caliper Temp Strips: Wide Band Temp Strips

Rotor Temp Paint: Genesis Temp Paint

For ✔guaranteed fit (only applicable if you buy direct from Alconkits.com) check our certified applications below:

PRODUCT INFORMATION

DBA DBA3417S provides a vehicle-specific front direct-replacement brake rotor for the 2021 BMW 430i.

The T2 slot pattern continually refreshes the pad surface and provides exit paths for friction dust and gases during repeated stops. DBA positions this configuration for daily driving, dependable replacement service and occasional spirited use, conditions that can expose the limitations of basic replacement friction components.

How This Rotor Is Used

This part is intended for daily driving, dependable replacement service and occasional spirited use. It retains the vehicle-specific mounting dimensions shown in the fitment data and installs in the original component location.

Technical Details

  • Position: Front axle
  • Product: Street Series T2 Slotted direct-replacement brake rotor
  • Direct-replacement Street Series construction
  • CNC-machined T2 bi-symmetrical slot pattern
  • Quantity: Sold individually; order two to service both sides of the axle
  • Manufacturer part number: DBA3417S

Alconkits Technical Note: This is the sensible direct-replacement choice for normal road service; move to the 4000 Series when the vehicle repeatedly operates at higher brake temperatures. Always verify the caliper, rotor and hub configuration against the fitment table before installation.

Common Questions

Is DBA DBA3417S sold individually or as a set?

It is sold individually. Order two rotors to service both sides of the listed axle.

What type of driving is this part designed for?

It is best matched to daily driving, dependable replacement service and occasional spirited use. The Street Series T2 Slotted specification determines its balance of response, heat capacity, noise and serviceability.

What should be verified before installation?

Confirm the axle, brake package, hub pattern and rotor dimensions against the fitment table before installation.

This Part Fits:

Year Make Model Submodel
2021 BMW 430i Base
2018 BMW 530e Base
2018 BMW 530e xDrive Base
2017 BMW 530i Base
2017-2018 BMW 530i xDrive Base
2019,2021 BMW 540i Base
2019-2020 BMW 540i xDrive Base
2018-2019 BMW 640i xDrive Gran Turismo Base
2016-2017 BMW 740i Base
2017-2022 BMW 740i xDrive Base
2020-2022 BMW 840i Base
2020-2022 BMW 840i xDrive Gran Coupe Base
2019 BMW X3 M40i
2019 BMW X3 sDrive30i
2019 BMW X3 xDrive30i
2022 BMW X4 M
2022 BMW X4 M Competition
2022 BMW X4 M40i
2022 BMW X4 xDrive30i
2021 BMW X5 M
2021 BMW X5 M50i
2021 BMW X5 sDrive40i
2021 BMW X5 xDrive40i
2021 BMW X5 xDrive45e
2021 BMW X7 M50i
2021 BMW X7 xDrive40i
2020 BMW Z4 M40i First Edition
2020 BMW Z4 sDrive M40i
2020 BMW Z4 sDrive30i
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How do you primarily use your vehicle?
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Daily Driver
Commuting, errands, highway — normal street conditions
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🛣️
Spirited Street
Street-driven but you enjoy pushing it on backroads and canyons
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Dual Purpose
Street-driven but you take it to track days or HPDE events
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Track / Race
Regular track days, time attack, club racing, or dedicated race car
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Off-Road / Heavy Duty
Off-road, overlanding, towing, armored vehicles, or military/LE use
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How would you describe your braking style?
Be honest — this helps match bite and pedal feel to how you actually drive.
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Smooth & Progressive
I want easy, linear feel. Comfort and predictability over outright bite.
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Firm but Controlled
I brake firmly when needed but don't threshold brake every corner.
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Maximum initial bite. I brake deep and hard, every time.
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I carry braking into corners — I need consistent release and feel.
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What's the highest heat scenario your brakes will see?
Compounds are engineered around specific temperature windows. Choose the most extreme situation you'll regularly encounter.
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Street
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❄️ Cold Climate / Gentle Use (under 100°C)
Mountain driving in cold temps or very gentle braking — needs immediate cold bite from the first stop
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🟢 Normal Street (100–400°C)
Typical daily driving — brakes rarely see sustained heat buildup
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🟡 Spirited / Mountain Passes (400–600°C)
Long descents, heavy vehicles, spirited canyon driving or repeated hard stops
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🔴 Track / HPDE (600–900°C)
Sustained hard braking on circuit — brakes get genuinely hot every session
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⚫ Racing (900°C+)
Endurance, sprint, or club racing — maximum sustained heat every lap
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How do you feel about brake dust and noise?
Higher-performance compounds often produce more dust and occasional squeal. Tell us your tolerance.
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Keep It Clean & Quiet
Clean wheels and silent operation matter to me. I'll trade some peak bite for this.
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Some Dust Is Fine
Happy to clean wheels more often if it means better braking.
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Performance Only
Dust, squeal, smell — I don't care. Give me the best stopping power.
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How important is rotor longevity to you?
Aggressive compounds can accelerate rotor wear. On Alcon-grade rotors, this is especially worth considering.
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Rotor Life Matters
I want pads that are gentle on rotors. Replacement costs are a real concern.
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Balanced Trade-off
I'll accept moderate rotor wear for meaningfully better stopping power.
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Performance First
Rotors are a consumable. I'll replace them as needed. Max stopping power wins.
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What's your budget per axle set?
Our catalog ranges from ~$100 to $500+ per axle. Every tier has excellent options — this helps us match you to realistic choices.
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Strong performance at an accessible price point
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$200–$350
Premium compounds — the sweet spot for most performance applications
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$350+
Race-grade, motorsport-proven friction materials
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⚠️ These recommendations are based on your stated usage profile. Availability varies by vehicle — use our year/make/model fitment lookup to confirm compatibility. Questions? Contact our team.

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