Product Summary

Dirt Late Model, Modified, Pavement Late Model

    Key Specs

    MFG. Part #517213
    Shock TypeTwin Tube
    Shock Body MaterialSteel
    Shock Body TypeSmooth
    Shock Body SizeLarge Body

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    QA1 517213 Details

    Introduced in 2013, QA1's 51 Series is an improved version of the popular 50 Series. The 51 Series features an in-house machined body with a larger inside diameter for increased oil volume for better cooling. Crafted with hard anodized internals and a zero gas pressure design, the 51 Series provides the most grip on slick tracks and the best feel of any shock. Popular choice for many racers from dirt and asphalt in nearly every type of class. Works best on dry-slick dirt and asphalt tracks where traction is limited and also as an axle wrap up shock. Gives superior feel and grip on smooth asphalt tracks.

    • 2-1/16" Steel twin tube body
    • Deflective disc valving
    • Linear valving provides a more stable car and allows the driver to feel the car better
    • Racer revalveable and rebuildable designed for unparalleled repeatability
    • Custom valving available
    • Non-fading
    • 100% Dyno tested & serialized
    • Made in the USA

    QA1 517213 Specifications

    MFG. Part #517213
    Shock TypeTwin Tube
    Shock Body MaterialSteel
    Shock Body TypeSmooth
    Shock Body SizeLarge Body
    Shock Stroke Range7.00" to 7.99"
    Compression Valving2
    Rebound Valving13
    Shock Stroke7.00
    Mount PositionBody-Up
    Upper Shock MountSpherical Rod End
    Lower Shock MountSpherical Rod End
    Extended Length Range20.00" to 20.99"
    Extended Length20.3"
    Compressed Length Range13.00" to 13.99"
    Compressed Length13.38"
    Schrader ValveNo
    FinishPowder Coated
    Coil-Over CompatibleYes
    Body Diameter2.06"
    Sold in QuantityEach
    NotesRequires QA1 CK5009 Coil Over Kit (Speedway Part # 7215009) for coil over applications
    Gas ChargedNo
    Boot IncludedNo