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Product Summary

401, Dome Piston Style, Cast Aluminum Piston Material

    Key Specs

    MFG. Part #9102078-030
    BrandSpeedway Motors
    Piston StyleDome
    Piston MaterialCast Aluminum
    Piston Diameter4.218"

    Need To Know

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    Details

    Replacement cast aluminum 4.1875" bore piston set for '59-'66 Buick 401 Nailhead. Specify .030", .040" or .060" oversize.

    • Cast from high silicon A-332 aluminum alloy
    • Machined on modern CNC machinery
    • Precision balanced & weight-matched sets
    • Balanced to within 8 grams from the lightest to the heaviest piston
    • The 401 rings are a cast top, and a cast second ring. 

    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    Specifications

    KEY SPECS
    MFG. Part #9102078-030
    BrandSpeedway Motors
    Piston StyleDome
    Piston MaterialCast Aluminum
    Piston Diameter4.218"
    GENERAL
    Notes="Compression height is 2.2968""
    Sold in QuantitySet