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    Sale!

    ACT XACT Streetlite Flywheel, 2011-2017 Ford Mustang | 600670

    Vendor: ACT
    Part Number: 600670
    Save $149
    Sale Price $637.00 Regular Price $786.00

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    The 600670 XACT Streetlite flywheel delivers noticeably improved engine response and acceleration, with OE-to-mild gear rattle. It is heat-treated forged for strength and toughness, with induction-hardened ring gears for maximum life. One-piece construction reduces the opportunity for failure and provides uniform, efficient heat transfer from the clutch disc, eliminating warped inserts or loose ring gears. Recommended for street and race use, the flywheel is forged, CNC machined, and dynamically computer balanced for smooth, reliable performance at high RPM.

    Warranty
    Installation Instructions

    Specifications

    • Construction: One-piece forged, heat-treated
    • Ring Gear: Induction-hardened
    • Balancing: CNC machined, dynamically computer balanced
    • Recommended Use: Street and race
    • Warranty: 1-year ACT limited warranty
    • Part Number: 600670

    Vehicle Applications

    Year Make Model Trim
    2011 Ford Mustang Base
    2012 Ford Mustang Base
    2013 Ford Mustang Base
    2014 Ford Mustang Base
    2015 Ford Mustang V6
    2016 Ford Mustang V6
    2017 Ford Mustang V6

    Frequently Asked Questions

    What is a Streetlite flywheel?

    It is a lightweight, one-piece forged flywheel designed to improve engine response and acceleration versus a stock flywheel, while remaining streetable with OE-to-mild gear rattle.

    Is the 600670 suitable for racing?

    Yes, ACT recommends this flywheel for both street and race use.

    Which Mustang years does the 600670 fit?

    It is confirmed for 2011-2017 Ford Mustang Base and V6 models, as listed in the Vehicle Applications table.

    What warranty applies to the 600670?

    ACT backs the 600670 with a one-year limited warranty.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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