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    S&S Cycle Forged Low Compression Piston Kit (.040") - 106-5773

    Forged Low Compression Piston Kit (.040
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    S&S Cycle Forged Low Compression Piston Kit (.040") - 106-5773

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    S&S Cycle Forged Low Compression Piston Kit (.040")
    • Forged "low compression" pistons for 74" stock motors with 3.4375" bore and 3.96875" stroke
    • 8:1 compression ratio
    • Deck height:  1.436"
    • All piston kits come with two pistons, rings, wrist pins, and wrist pin keepers
    • Compression ratios listed are approximate and are calculated using the correct length cylinders as specified by S&S
    • Require the use of connecting rods with a rod length of 7.440" (standard length OEM #24281-74A connecting rods); use of earlier connecting rods with a rod length of 7.470" (OEM #24281-41A) will result in a slight increase in the compression ratio of about 1/2 point, and may also result in clearance problems (check all piston to cylinder head clearances carefully when using the early style rods)
    • For Knuckleheads 41-47

    NOTE:  Using 80" pistons with 74" (3 31/32" stroke) flywheels will result in very low compression.  Using 74" pistons with 80" (4 1/4" stroke) flywheels will result in contact between piston and cylinder head, and potential engine damage.
    Mfg. Price Controlled Item
    Due to the manufacturer's advertising policy - this item is excluded from promotions and discounts details
    Specifications
    Bore Size 3.4775 in.
    Compression Ratio 8:1
    Mfg #: 106-5773
    Part #: 1334814
    Type Piston Kit
    Units Each
    Weight 0.00 lbs
    Vendor Part Number(s):
    09101922
    Resources & Manuals
    Instruction Manual 601.4 KiB
    Instruction Manual 637.3 KiB
    Fitment for S&S Cycle Forged Low Compression Piston Kit (.040")

    Part 1334814 fits the following machines

    Harley-Davidson
    1958 1959 1960 1961 1962 1963 1964
    1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978
    1977
    1965
    1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954
    1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979
    1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965
    1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
    1949 1950 1951 1952 1953 1954 1955 1956 1957
    1977 1978
    1971 1972 1973 1974 1975 1976 1977 1978
    1974 1975 1976 1977 1978
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