Wind buffeting diffuser for MK7 & MK7.5 Golf, GTI, R
Wind buffeting diffuser for MK7 & MK7.5 Golf, GTI, R
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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
If you found this product, you likely already know what it is for.
This part significantly reduces wind buffeting noise at highway speeds. This wind noise or wind buffeting is also known as Helmholtz resonance.
Wind buffeting is particularly bad on 2 door vehicles, but anyone in a 4 door will also notice the helicopter-like noise in your inner ear when you open just the front windows.
This part is most effective from 0-80mph. Above 80mph the buffeting noise will begin to overcome this parts ability to reduce the resonance. Cross winds can also reduce their effectiveness. These work best when they are diverting air flow from vehicle movement.
This is designed for USDM models. It may not fit international models outside of North America
IMPORTANT NOTE: As with any aerodynamic part, other parts upstream on the exterior of the car can effect this part’s function. Splitters, endplates, tire spats, hood vents, fender vents can all change airflow feeding into this part. Our testing was done on a car with our V3 aero kit, fender and hood vents. Your results may vary.
Our serrated design is more effective than the small curved profiles you commonly see on Supra's, and Porsche's to combat this noise. Those options do reduce wind noise at some speeds, however they often cause noise at lower speeds. Their effectiveness tapers off above 70mph in most cases (Go read product reviews if you don't believe it).
Do these really work!? - don't take our word for it, read the reviews on our website, or check out some video reviews:
Made of 3D printed satin black UV resistant ABS composite plastic. Adheres to the front triangle window with included 3M VHB tape. The inside edge is contoured to match the curve of the window, and a pocket recessed into the surface for the VHB tape. The side mirrors can still be folded with this installed.
Why 3d print this? Because it keeps this part affordable for everyone. Most people don't want to spend hundreds of dollars on milled plastic or carbon versions for a part this small.
You can lightly sand and paint this plastic if you prefer gloss black finish.
Each Order Includes:
- 1 Driver Side Reducer
- 1 Passenger side Reducer
- Pre-applied 3M VHB Tape
- Alcohol Swab to clean the window
Want to further reduce wind noise on track at higher speeds? Add some vortex generators to the A-pillar from our friends at Yeti Race Craft. These compliment our diffusers function and will also reduce drag at higher speeds.
**Using this part in conjunction with window wind deflectors will create noise at lower speeds.**
