Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Brakes› Brake Systems And Components
DBA
DBA Porsche 911/Boxster/Cayman Front Drilled & Slotted 4000 Series Rotor
SKU: D001 DBA42394XS
Easy — 1–2 hours
Overview
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Part #: DBA42394XS
DBA's 4000 Series XS rotors feature our best technology & materials for maximum performance. High carbon & heat treated iron, patented Kangaroo Paw ventilation and a unique drill & slot pattern makes the perfect direct replacement rotor.
Vehicle Symptoms
- Vibration when braking at highway speeds
- Squealing or grinding noise from front brakes
- Reduced stopping power, longer braking distance
- Pulsation in brake pedal under heavy braking
- Brake fade after repeated hard stops
Relevant Conversations
- DBA 4000 Series XS front rotors review
- Best performance brake rotors for street and track
- Vibration when braking at 60 mph fix
- DBA 42394XS cross drilled slotted rotors
- Brake pedal pulsation after new pads
- DBA vs StopTech slotted rotors comparison
- How to install DBA 4000 rotors
- Reduced braking performance after track day
- High carbon brake rotors benefits
- Kangaroo Paw ventilation rotor technology
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | DBA |
| Part Number | D001 DBA42394XS |
Videos
HOW TO: DBA 4000 Series Rotor and STILLEN Brake Pad Install
DBA v OEM braking test featuring Bathurst champion David Reynolds
DBA Street Series Brake Rotors
New Brake Rotors For My STI | DBA T3 4000
2-piece Disc Brake Rotors Review - Girodisc vs DBA Rotor Rings
Mustang DBA X-Gold Series Cross Drilled/Slotted Rotors Review
DBA Advanced Disc Rotor Technology
DBA 4000 & 5000 series performance brake rotors
Battle of the Brakes: Camaro ZL1 Rotor Showdown Featuring DBA, Girodisc, and Brembo OEM
About MOTORMIA
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
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