APEX EC-7 Wheel 18x9.5 ET38 for 2015+ Subaru WRX/STI
(Set of 4 wheels without tyres)
This product is by special order only, delivery is usually around 3 weeks from purchase. Price is listed in $NZ including GST for a set of 4 wheels without tyres.
* Contact us for pricing if you require a different quantity.
The APEX EC-7 is a strong and light weight flow-formed wheel which has been extremely well proven racing all around the world.
Wheel Specification:
Size: 18" x 9.5" (Diameter x Width)
Offset: ET 38 / +38
Face Profile: 2; moderate concavity
Wheel Construction: Flow Formed
Bolt Pattern: 5x114.3mm
Center Bore: 56.1mm
Weight: 21.7lbs / 9.84kg
** Wheel sales are not returnable, please confirm fitment on your vehicle before ordering. **
EC-7 Design
Fit Matters
A design fit to win
The APEX EC-7 wheel includes details specifically implemented to enhance the WRX/STI owners' track day and street performance experience. An optimized car setup begins with the right wheel and tire fitment, and without model-specific attention, maximum performance is compromised. These wheels were developed exclusively for the WRX/STI chassis in a square configuration which promotes a neutral handling experience while allowing drivers to efficiently rotate wheels and tires on all four corners of the car. This dramatically reduces the cost of tires over time. Simply put, our wheel was designed for long-term durability without sacrificing performance and fit, while also adhering to APEX’s mission of maximizing value. Corner carving & track enthusiasts: this is your wheel.
Please note, small spacers may be needed up front for proper strut clearance depending on suspension type, vehicle ride height and tire size and brand.
Brake Clearance - Spokes
Spokes that work for you
If the spokes of a wheel don't clear your brake calipers, then the wheel can’t be used at all. We made sure these wheels offer ample brake clearance, effectively clearing a variety of aftermarket BBK’s as well as popular factory BBK’s.
Brake Clearance - Barrel
A lot of room in a tight space
Designing a wheel with spokes that clear a Big Brake Kit, is only half of the battle. The inside of the barrel needs to be large enough to physically fit large calipers and rotors. Be warned— not all wheels are made equal. The barrel of the EC-7 wheel offers unmatched caliper clearance because wheels shouldn’t limit your choice of aftermarket brake kits, and brake kits shouldn’t force you to run heavier, oversized wheels. We 2D modeled most Big Brake Kits available in Solidworks and tweaked the wheel design of the EC-7 prior to production in order to fit as many brake kits as possible.
Face Profiles
One design, many levels of beauty
The EC-7 wheel is manufactured in three increasingly-concave face profiles; The shallowest face provides increased caliper clearance on narrow applications, while the deepest concave face reduces weight and creates a stunningly aggressive appearance on low offset and wide-width applications. This specific WRX/STI application boasts a profile 2 medium concave face.
Spokes
More than just a pretty face
The curved spokes of the EC-7 serve many purposes, both in terms of form and function. The split "Y" spokes were carefully evaluated from every aspect to ensure light weight and remarkable strength. Their curved design increases brake calipers in almost every application, allowing the EC-7 to fit where the ARC-8 design simply cannot. The unique curvature of each face profile reduces center pad material as they are optimally selected for each unique width and offset. The lack of a deep front lip and spokes that connect directly to the barrel's lip, producing a rigid wheel with even load distribution.
Hub Center
Form follows function
Race wheels can't just be light, they need to function in a high performance environment. Unlike the narrow lug recesses of most other wheels, the EC-7 wheel features bored-out lug recesses that easily accommodate over-sized race lugs and beefy impact sockets. This allows for quick and easy wheel changes and prevents chips and scratches from tools.
Hub Centric
No rings or adapters here
All APEX EC-7 wheels are purpose built for select vehicle applications, and centering rings are never required for any WRX/STI application. All 5x114.3mm bolt pattern wheels feature a direct-fit, 56.1mm centre bore.
Wheel Hardware
Original or Aftermarket, it all works
The EC-7 wheel can be used with all OEM and aftermarket mounting hardware with a 60° tapered seat. Lug bolts, wheel locks, and stud conversion kits all work perfectly. The EC-7 wheel also accepts wheel spacers without issue. The shallow rear chamfer allows the wheel to remain hub centric even when 5mm flat spacers are used. The chamfer is deep enough to clear the chamfered lip found on some aftermarket spacers that would typically cause improper seating of the wheel and, therefore, wheel vibration.
The APEX Standard
Flow Forming
Benefits of forging, without the pain
All APEX wheels, including the EC-7 wheel, are produced using the Flow-Forming technique. This process significantly reduces weight in the barrel, which has the greatest impact on rotational mass. During the manufacturing process, rollers apply high pressure to the inner barrel, compressing the aluminum into it's final shape. This effectively eliminates porosity and aligns the grain structure of the metal, which increases tensile strength. The end result of the Flow-Forming process is a light-weight and extremely strong barrel that equals that of a traditional forged wheel at a fraction of the cost.
Testing & Certifications
We break a lot of wheels
Computer simulated stress tests are no match for real world testing when designing a light-weight wheel that will see extreme loads. All APEX wheels are crush and load tested to exceed JWL standards and those results are independently tested in Japan by the 3rd party government agency known as the VIA. Countless wheel companies falsely claim they are tested and certified by the VIA, and so they lack the certificates to prove it. We test and certify each and every design, diameter, width, and offset, separately. We publicly list all our VIA registration numbers which are on file with the VIA for confirmation. Don't trust brands that claim testing, but can't provide verifiable registration numbers.
Weight & Strength Optimization
It’s all in the details
Various design features were implemented to ensure that the EC-7 wheel design was as light, but had even more strength to handle the abuses experienced in endurance racing. We began with a beefy, multi-spoke, one-piece design. We built and test this wheel with even higher load rating requirements. We added reliefs in the mounting pad to remove weight between lug holes, where we could safely save weight. The design was then run through Finite Element Analysis (FEA) to further optimize the spoke and barrel design. The result is a lightweight wheel with extra strength in all the right places. Use the EC-7 with confidence is over built for both street and track.
Finishes
Because being faster is just not enough
The EC-7 wheel is available in multiple finishes. All APEX wheels are finished using a comprehensive multi-stage liquid paint system over a powder coated base coat. Standard finishes include gloss-metallic finishes, and semi-gloss or matte finishes.
Often overlooked, painted or powder coated lug hole seats can cause hardware to loosen or begin the spread of paint chipping to more visible sections. The coating process of the EC-7 leaves lug holes, center bores and mounting pads untouched, which ensures proper fit and torque values.
APEX wheels are available in New Zealand from Autoform NZ Ltd, an authorized APEX dealer.