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      09-21-2011, 01:53 PM   #1
Eddy@ApexRaceParts
BimmerPost Supporting Dealership

 
Drives: E30 M3, 2011 335d
Join Date: Jun 2009
Location: Bay Area, CA

Posts: 1,597
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ApexRaceParts - GT4 style brake duct

ApexRaceParts GT4 style duct kit



$199 for the pair
Click HERE to purchase
In stock and ready to ship!


Design:
The Carbon ducts were white light scanned and then modifications were made to the CAD profile before producing a prototype with a 3D printer
A mold was created using that sample pair to produce the ducts from ABS plastic.

Improvement:
These ABS ducts have been modified to include a thicker ring where the hose connects
The carbon ducts are only 2.75" OD and not a true 3" connection
The added ring results in a tighter more secure fit
It helps prevent hoses from sliding off, or hose clams from crushing the tube if tightened too hard.
The factory Carbon ducts are $599 a pair. These ducts are 1/3 the price

Weight:
The original carbon ducts are 0.8 ounces each
The new ABS ducts are 1.6 ounces each
This is such a low weight, that the benefits of carbon fiber weight savings on such a small part is negligible in addition to costly

Hardware:
No mounting hardware is included
These are sold on their own

Installation:
These install under the factory bumper, directly into the black foam under tray
cutting of the foam is required to install these

Backing Plates and hoses:
At this time the ducts are being sold on their own for those who want to fabricate their own kit
These ducts were originally intended to be sold as part of a complete kit including hoses and plates
Another vendor is still working on producing backing plates that can be used with these ducts on both OEM and BBK applications
Customers who wish to use these ducts will need to supply their own 3" duct and hose clamps at this time






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Carbon Fiber vs. ApexRaceParts duct




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