Corvette Gears Extreme Duty Rear Differential Package - 3.73 / 3.90 / 4.11 Exchange : C5 & Z06

Corvette Gears Extreme Duty Rear Differential Package - 3.73 / 3.90 / 4.11 Exchange : C5 & Z06

Sale price $1,995.95

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Availability: Usually Ships In 3-5 Days In Stock - Ships Next Business Day Brand: Unitrax SKU: SKU:11110374
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  • Description

    1997-2004 C5 & Z06


    For the serious drag racer who wants the strongest C5 rear end available. If you have 450HP + and plan to drag race we recommend this for your 1997-2004 C5 or Z06 Corvette.

    All parts are specially treated for strength, the gears are also Micro Polished for strength and fit, before assembly with a custom severe duty output shaft. For additional improvements in your 60' times and 1/4 mi. ET.
    • 1 Year Warranty

    A description of the treatment process. No, we don't send your parts to the moon! We place them in a processor where they are gradually cooled with nitrogen gas to -300 degrees Fahrenheit. That temperature is maintained for at least eight hours. The length of time varies by material and desired results. After the cooling cycle is complete, the item is slowly warmed back to room temperature. Then the object is heat-treated, with temperatures of 100 to 400 degrees Fahrenheit, depending on the composition of the item. Finally, the item is gradually returned to room temperature. The complete process takes a minimum of 24 hours. What is actually happening to the object? This one-time process tightens grain structure creating a denser micro-structure while increasing surface area. This improves the path of energy and provides increased stress relief and dimensional stability. The bottom line — components last longer and perform better.


    *NOTE: There is a $1000 core charge for this performance package.

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  • Shipping

    All items will be shipped via Standard Ground Service unless otherwise requested. Many carriers require a physical street address; they will not deliver to a P.O. Box. All freight charges are the customer’s responsibility. Please note that all freight charges quoted are for Standard Ground Service on the price list. We will be happy to quote you charges for other shipping methods. All Items shipped on Friday Next Day Air will be delivered on the following Monday. If you would like Saturday delivery for items shipped on Friday only, please contact us for shipping arrangements. If an item is custom order or on back order, it will ship with the selected shipping service as soon as it is ready. To check if an item is in stock and ready to ship, please call our parts department.

  • Return & Policy

    Customers may return new, unused items within 90 days of delivery for a full refund to the original payment method. West Coast Corvette is not responsible for return shipping costs unless it was our error. Please refer to the tables below for return restrictions.


    Time Period Refund Policy
    90 days Full refund to original payment method
    After 90 Days 10% Restocking fee and store credit


    Item Restrictions Products Refund Policy
    Oversized Oversize fees are noted on the product listing. Including but not limited to, wheels, spoilers, splitters, side skirts, any items with initial oversize shipping fees 10% Restocking fee
    Custom Items MGP Calipers, Lloyd mats, Racemesh grills, Speed Lingerie, American Car Craft, Oracle Lighting Not eligible for return
    Final Sale Used parts, clearance items and parts that have been installed. Not eligible for return

Corvette Gears Extreme Duty Rear Differential Package - 3.73 / 3.90 / 4.11 Exchange : C5 & Z06

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