EOS C7 Rear Diffuser Fins Extension Kit | Carbon Flash & Hydro-Dipped Carbon | 2014-2019 Stingray Z06
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EOS 2014-2019 Chevrolet Corvette C7 Rear Bumper Diffuser Fins Extension Kit

AERO PARTS
Confirmed Fit: 2014–2019 Chevrolet CORVETTE C7
4.00 · 1 review
  • C7 rear diffuser fins extension kit — Stingray / Z51 / Grand Sport / Z06 (2014-2019)
  • Complete kit — fin set + drilling template + mounting hardware
  • Two finishes — Carbon Flash painted ABS ($89.99) or Hydro-Dipped Carbon ($109.99)
  • Bolts to OEM rear diffuser — drilling template included, no measuring
  • 30-45 min install — intermediate-friendly with a drill
  • Two install videos in the description tab — watch before you drill

Authorized Extreme Online Store dealer — MAP-priced. Pick your finish below; SKU updates to match.

Vehicle Year
2014, 2015, 2016, 2017, 2018, 2019
Vehicle Make
Chevrolet
Vehicle Model
Corvette
Vehicle Trim
Grand Sport, Stingray, Z06, Z51
Exterior
Rear Diffuser
Material
ABS Plastic
Surface Finish
Carbon Flash, Hydro-Dipped Carbon
$89.99

or as low as $7.50/mo with Affirm

Verified In Stock Inventory Confirmed • Money-Back Guarantee

Available

Carbon Flash is ABS painted to match GM's factory Carbon Flash Metallic. Hydro-Dipped Carbon is the same ABS shell with a hydrographic real-carbon-look film overlay.

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SKU: DIFF-166-V2-ABS Brand: Extreme Online Store
California Prop 65 Warning
WARNING: This product can expose you to chemicals including those identified by the State of California as known to cause cancer, birth defects or other reproductive harm. For more information, visit www.p65warnings.ca.gov.
OVERVIEW
ON THE CAR
INSTALL VIDEO
FINISHES
FITMENT
INSTALL
SKU LINEUP

C7 Rear Diffuser Fins Extension Kit

Add the factory-aero-package look to any 2014-2019 Chevrolet Corvette C7 — Stingray, Z51, Grand Sport, or Z06. The Extreme Online Store add-on diffuser fins bolt onto the OEM rear diffuser using a precision-drilled template included with every kit. Same shape, two surface finishes, identical fitment.

What’s in the box

Rear diffuser fin set + drilling template + mounting hardware. Lightweight ABS plastic with the chosen surface finish.

Direct OEM bolt-on

Mounts to factory rear diffuser. Drilling template included for precise alignment. No body modifications.

Two surface finishes

Carbon Flash (painted to match GM’s factory Carbon Flash Metallic) or Hydro-Dipped Carbon (real-carbon-look hydrographic film over ABS).

All C7 trims

Same fit across Stingray, Z51, Grand Sport, and Z06. Both base and Z07-equipped diffusers supported.

On the Car

Installed on a white C7. Tap any image to expand — arrow keys or swipe to flip through, ESC or tap outside to close.

Install Walkthrough

Watch the install before you drill. Both videos open on YouTube in a new tab.

Drilling template ships with the kit. Test-fit before any drilling.

Carbon Flash vs Hydro-Dipped Carbon

CARBON FLASH
$89.99

ABS shell painted in Carbon Flash Metallic — the OEM color GM uses on the Carbon Flash trim package. Solid satin-black appearance, color-matched to existing factory carbon-look trim.

  • Best value finish
  • Color-coded to GM factory Carbon Flash
  • UV-stable paint, no yellowing
  • Touch-up paint matches stock
HYDRO-DIPPED CARBON
$109.99

Same ABS shape, hydrographic carbon-weave film overlay with a clear-coat finish. Reads as woven carbon fiber from a normal viewing distance for ~$700 less than real CF.

  • Visible woven pattern through clear coat
  • Same lightweight ABS base
  • $20 upgrade over Carbon Flash
  • Best look-for-price on the C7 market

Both finishes mount identically. Color-trim choice only.

Vehicle Compatibility

Trim Years Body Notes
Stingray 2014 – 2019 Coupe / Convertible Base + Z51
Grand Sport 2017 – 2019 Coupe / Convertible All trims
Z06 2015 – 2019 Coupe / Convertible Base + Z07

Fits OEM rear diffusers across all C7 trims. ZR1 owners: this is for the standard C7 rear diffuser — ZR1 ships with its own dedicated rear aero, do not use this kit on a factory ZR1.

Installation

The fins bolt onto the factory rear diffuser using the included drilling template. Mark, drill, fasten. The template handles the precision so you don’t have to measure twice.

Difficulty Intermediate — requires drilling the OEM diffuser
Tools needed Drill, drill bit (per template), masking tape, mounting hardware (included)
Typical bay time 30 – 45 minutes
Body modifications Drilling holes in OEM diffuser only (covered by fin assembly)
Reversibility Holes remain in diffuser if removed — consider permanence before drilling

Pro tip: Tape the template to the diffuser, dry-fit the fins through the template before drilling, mark the holes with a sharpie, then remove the template and drill. Triple-check alignment before any drill goes through fiberglass.

SKU Reference

Two surface finishes, identical shape and fitment. The selector above routes to the correct SKU automatically — this table is your verification reference.

Surface Finish Material Part Number Price
Carbon Flash ABS Plastic (painted) DIFF-166-V2-ABS $89.99
Hydro-Dipped Carbon ABS Plastic (hydrographic film) DIFF-166-CFLK $109.99

Authorized Extreme Online Store dealer. MAP-priced — same price as EOS direct across both finishes.

AUTHORIZED RETAILER
Direct from EOS
MAP-PRICED
Same price everywhere
DRILL TEMPLATE INCLUDED
No guess-work
Vehicle Year 2014, 2015, 2016, 2017, 2018, 2019
Vehicle Make Chevrolet
Vehicle Model Corvette
Vehicle Trim Grand Sport, Stingray, Z06, Z51
Exterior Rear Diffuser
Material ABS Plastic
Surface Finish Carbon Flash, Hydro-Dipped Carbon

1 review for EOS 2014-2019 Chevrolet Corvette C7 Rear Bumper Diffuser Fins Extension Kit

  1. TERRY BAHAM (verified owner)

    Very small gap at the top, still love it though. No one better get that close to my vehicle to see it!

    (3) (0)
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