3/8" Thick Aluminum Ceramic Coated Tunnel Plate

16.00 LBS
$10 Domestic U.S. shipping | AK, HI & Int'l calculated at checkout

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3/8" Aluminum Tunnel Plate

This is very similar to our Most Popular ALC-250 exept it's an extra 1/8" thicker.  At a full 3/8" thick 6061-T6 aluminum, this plate is three times as thick as your stock OEM Tunnel Plate;  Coated on all sides with a specially engineered ceramic coated.  

This is the a great choice to offer both chassis stiffening and heat shielding to reduce the amount of heat transfer from the exhaust.  Primarily designed for the Road or Autocross Racer.

Due to possible fitment issues, not recommended for the C6 Z06 Corvette


Since its release, the redesigned Tunnel Reinforcement Plate has been one of the hottest suspension mods for the C5 and C6 Corvette.  Installed on both the C5R and C6R Race Corvettes, it has been proven over and over again to reduce the amount of torsional flex in the chassis.  In addition, our ceramic coating adds another benefit by offering some heat shielding from your exhaust system.

The engineers at General Motors acknowledged the benefits of a stiffer more rigid Tunnel Reinforcement Plate and improved their original design and incorporated something similar into the new

We have Taken their design one step further!

Featured in both Corvette Fever and SPEED, STYLE, & SOUND magazine.

We have re-engineered the undercarriage tunnel plate on the C5 and C6 with strength and performance in mind. CAD designed and computer precision cut, our 1/4” thick (6061-T6 Aluminum) “Abs-of-Aluminum” Tunnel Reinforcement Plate is twice the thickness of the stock OEM plate.  The benefits of this added thickness is a much more rigid and stiffer tunnel plate.  Therefore reducing the amount of flex in the chassis and improving the overall functionality of the Corvette suspension.  

Below is a picture comparing the stock OEM C5 and C6 tunnel plates to our most popular
1/4”  thick aluminum version (Abs-of-Aluminum)

elites2.jpg    elites3.jpg

In addition to improved stiffening, another major advantage or our Tunnel Reinforcement plate is the heat shielding it offers.  All our Tunnel Plates are coated on all sides with a specially engineered Ceramic Coating to reduce the amount of heat transfer from the exhaust into the interior console.   For similar heat shielding, check out our ALTA-250 1/4" Thick Aluminum Ceramic Coated Tunnel Plate WITH Thermal-Abs

Upgrading your exhaust?
If you are changing or upgrading your exhaust, now is the time to install one of our Tunnel Reinforcement Plates.


Need more information about Tunnel Plates, Click HereTunnel Reinforcement Plate 


The “Abs-of-Aluminum” is a direct replacement for your stock
OEM tunnel reenforcement plate and bolts in place using the existing hardware.   
Installation is very simple and instructions are included.


Other benefits include:
● Rigidly ties the right and left inner chassis rails together
● (2x) Access Holes for O2 Sensor Wires    ● A must for Coupes and Convertibles!
● Direct, bolt-on replacement
● Greater sense of control behind the wheel when cornering
● Reduced squeaks, creaks and noises while driving
● Significantly decreases the
heat transferred to the interior console
● Sound deadening qualities


Product Reviews

  • 5

    Posted by Mike Bauer on 26th Sep 2020

    2001 Corvette, targa top, 120k miles. Replaced it the stock, sheet metal tunnel plate with the 3/8 inch plate and I’m stunned! Completely changed the feel of the Corvette, drives likes it’s on rails! Greatly reduced Squeaks and rattles! Beautiful appearance too. I do recommend longer bolts but not necessarily needed, the OE bolts will hold it by about 3 threads. All in all, an absolute MUST have for driving enthusiasts!

  • 5
    Great product!

    Posted by Unknown on 22nd Dec 2014

    I bought a 2005 C6 with 50k, and I also own a 2000 911. I wanted to get the same feel in the corners as my 911, stable and solid. I read that the tunnel was a weak point in the car design so I researched the improvements and tunnel plate just made sense. Install was easy and wow! what a difference! no more squeaks, rattles or rolls. This product is a must for any C6 owner that wants the see what this car can really do.