MQB Brake Duct Kit (DIY)
MQB Brake Duct Kit (DIY)
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Fast Shipping & FAQ
Fast Shipping & FAQ
- When will my order ship?
- Orders placed before 12pm EST typically ship the next business day if the product is in stock. Orders placed after 12pm EST will ship 48 hours later.
- Orders placed after 10am EST on Friday will ship on Monday.
- DHL Orders placed after 10am EST on Friday will ship on Monday.
- Tracking will be emailed as soon as we create the label.
- Do your products come with a warranty?
- Yes! We offer a manufacturer warranty on all of our products, the time period ranges by product line, so feel free to contact us for replacement parts. Please be sure to include which pieces you need.
- Do you ship international? What are the fees?
- We do ship direct to some countries outside the US.
- All international shipments are sent DDU and with signature required. You will be responsible for all duties and customs fees and arranging for delivery.
- The customer is responsible for all import duties and customs fees. They are not built into the product cost.
- What is your return & order cancellation policy?
- Please check it out here: Returns & cancelled orders
Still have a question that's not covered here?
Easy Returns
Easy Returns
Warranty:
For part replacements or destroyed products please contact us with the pieces you need! The warranty covers manufacturer defects and failed components for 1 year.
Cancelled Orders:
Once the order is placed, any cancelled orders will be charged a 3.5% credit card/Paypal fee that is deducted from the refund.
If tracking has already been created, cancelled orders will be charged a 10% restocking fee, based on the order total. The customer is responsible for shipping fees incurred and return shipping fees to send the product back for a refund.
We do not provide return labels for orders that ship out of the continental United States. You will have to create your own label to return the product.
Returns:
Our policy lasts 30 days. If 30 days have passed since your purchase, please contact us about the possibility for a refund, store credit or exchange.
Splitters, chassis brackets, diffusers and side skirts are not returnable or exchangeable.
To be eligible for a return, your item must be unused and in the same condition that you received it. There are certain situations where only partial refunds are granted.
25% restocking fee applies to products returned without all original packaging. We will provide a return label in the first 30 days (since ship date) and deduct the cost of the return label from the refund.
After 31+ days customer must ship the item themselves. Shipping charges on the original order are not refundable unless it was a CJM shipping error. We do not provide return labels for international shipments.
For example: $75 part + $6 shipping fee = $81 order total. Customer would like to return because they no longer need it, or ordered the wrong part.
$75 (part cost) - $14 (return shipping label) = $61 refund.
Refunds (if applicable)
Splitters, chassis brackets, diffusers and side skirts are not refundable.
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 few days.
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 Support@cjmind.com.
Exchanges (if applicable)
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at support@cjmind.com, we will issue a return number and provide a return address.
Shipping
Please contact us before returning any merchandise. We will provide a return label in the first 30 days (since ship date). Depending on where you live, the time it may take for your exchanged product to reach you, may vary. We don’t guarantee that we will receive your returned item. We are not responsible packages lost by the carrier.
Install Info
Install Info
Install sheets can be found on CJMinstall.com. We are in the process of digitizing all sheets. If you can't find the copy you need, please email us! support@cjmind.com
Ships in 4-5 business days.
All sales are final, no returns, refunds or order cancellations will be accepted on this part.
FITS THESE MODELS:
*We do not recommend using this on cars with front ride height sensors. The hose will rub on the sensor and mount.
- MK7 & MK7.5 GTI (2015-2022)
- MK7 Golf R (2015-2019)
- MK7 & MK7.5 Jetta & GLI (2019-2022)
- Sportwagen 1.4l/1.8L (2017-2019)
- Arteon 2.0L (2019-2023)
- Alltrack 1.8L (2017-2019)
- Audi A3 8V 1.8L & 2.0L (2015-2018)
- Audi S3 8V (2015-2017)
NOT confirmed yet:
- RS3 8V
- TTRS
This kit includes rotor plates, hose flanges and hoses only. We do not include an inlet for the ducts. You will need to source and route those parts yourself.
Every piece of this kit is available individually to service it or DIY a custom setup. Just like a splitter, you should anticipate some of this parts to be "wear items" due to their proximity to the ground and rubbing from steering.
Hoses will develop holes eventually from the frequent abrasion against the other parts of the suspension assembly. Listings for each part individually can be accessed by clicking on the item below.
Each kit includes a set of parts for both sides of the car:
- 2 - 5052 Aluminum brake shield backing plates
- 2 - billet 6061 brake hose adapter flanges (passenger & driver)
- 2 - 2.5”/65mm ID high temp silicone hoses with wire reinforcement - 36" per side
- Hardware pack & 4 - stainless hose clamps and zip tie pack
- 4 - OEM caliper carrier bolts - N91084901 (required to be replaced when removing the carrier bracket for a second time per VW spec.)
We took temp readings on a 2015 GTI with OEM non-PP calipers, EBC rotors & EBC red pads. Temp probes were installed to gather ambient temp data inside the top hat at the hub and on the caliper body. The data points were logged in 10 second intervals. The driver side was setup with a brake duct, the passenger side without. The car was warmed up and the brakes used from 70 mph -> 10mph, five times before data logging started. Both sessions were done on the same section of road, on the same day with the same ambient temp.
- Speed played a role in effectiveness. At 50mph+ the cooling was more notable both at the caliper and in the top hat. Under 50mph, caliper cooling was greatly reduced, however rotor temps were still significantly lower.
- The ducted brake recovered from peak temps about 40 seconds quicker than the un-ducted regardless of speed.
- Ambient temp in the hat was on average 23°F lower with ducting. However, this did correlate to vehicle speed.
- With our ducting kit, during a 20 minute session with an average speed of 45mph. The ambient temp in the rotor hat was reduced by 20%, and surface temp of the caliper body was 3% lower.
- With our ducting kit and RS3 brake deflectors, during a 20 minute session with an average speed of 58mph. Ambient temp in the rotor hat was 21% lower, and 8% lower on the caliper body.
- Our data is provided only for reference. There are many variables that can influence the brake cooling, we cannot guarantee you will have the same results.
FAQ:
Why didn't you use 3" hose?
1. Access to the back side of the rotor top hat is limited with OEM unmodified spindles. We can only make a 4.29 in² (~2.35 inch diameter area) slot in the brake shield. With this bottleneck, there was no gain by using a 3" hose.
2. We wanted to retain tire clearance at full lock in both directions. Packaging constraints around the spindle did not allow for 3" to fit, even if was oval duct.
Can't you just put a 3" pipe on the back of the brake shield and cut a hole?
You can, however cooling one side of some rotors can lead to stress cracking during the rapid heat cycle track use creates. In our opinion, that risk of losing a rotor is not worth it. Our duct is designed to dump air into the top hat only, so the vanes can cool the rotor more evenly. This does not apply to floating rotors, however we need to offer a kit that works on all cars.
Will these fix brake fade on my OEM calipers?
No, however a combination of proper pads, fluid, and cooling ducts will drastically reduce brake fade. Eventually OEM calipers will still fade with heavy track use especially later in the day after multiple sessions.
Anything else I can do to make these work better?
Pair them with a proper track pad, and fluid (or aggressive street pad for daily driving). Adding a fender vent will also help release pressure & heat in the fender well, allowing these ducts to work more efficiently.
Do you have rotor temp data?
Not yet. We ordered IR sensors to data log rotor temp data in October 2022, but they have been on backorder for six months at this point (4/2023). Once they arrive we will update our data charts with higher speed track data as well. Using handheld infrared temp guns after sessions, rotor temp is significantly cooler with the ducting. However we don't have enough data points during driving to specify percentages or recovery rate yet.
