Crankcases

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  • S&S MK-Series "B" Crankcase | Matte Black (310-1326) S&S MK-Series "B" Crankcase | Matte Black (310-1326)

    S&S MK-Series "B" Crankcase | Matte Black (310-1326)

    Stock deck height Large volume sump Machined, close-fitting oil scraper (stock is as cast) A solid foundation for building a big-bore engine Made in the USA NOTES: Includes Manufacturers Statement of Origin (MSO) document. Can be paired with a...
    $3,020.95
    $2,456.32
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  • S&S MK-Series Engine Case Kit M8 Touring (310-1170)

    S&S MK-Series Engine Case Kit M8 Touring (310-1170)

    Stock deck height Large volume sump Fits stock touring frame Designed to accept larger bores Accepts all OEM style components Reinforced case prevents cracking in high stress areas for increased reliability Machined oil scraper allows better oil...
    $2,649.95
    $2,034.42
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  • S&S Special Application Crankcase (31-0047)

    S&S Special Application Crankcase (31-0047)

    Cam chest is moved outward .250" to allow crankcases to handle large cylinder bore sizes Relocated cam chest oil pick-up increases gear case scavenging and virtually eliminates oil carry-over at sustained high rpm Machined to accept the stock...
    $2,115.71
    $1,626.67
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  • S&S Steel Breather Gear (33-4241)

    S&S Steel Breather Gear (33-4241)

    All-steel construction Welded-in screen Higher flow than stock Elongated breather pocket scavenge hole for increased suction Compatible Vehicles Years Make Make Notes 1995-1997 Harley-Davidson Bad Boy FXSTSB 1983 Harley-Davidson Disc Glide...
    $133.51
    $106.93
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  • S&S Steel Breather Gear +.03" (33-4242)

    S&S Steel Breather Gear +.03" (33-4242)

    All-steel construction Welded-in screen Higher flow than stock Elongated breather pocket scavenge hole for increased suction Compatible Vehicles Years Make Make Notes 1995-1997 Harley-Davidson Bad Boy FXSTSB 1983 Harley-Davidson Disc Glide...
    $229.95
    $162.37
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  • S&S Steel Breather Gear Kit +.030" (33-4263)

    S&S Steel Breather Gear Kit +.030" (33-4263)

    Kit comes with gear and spacer Require the use of corresponding cam and pinion gear Made in the U.S.A. Compatible Vehicles Years Make Make Notes 1958-1964 Harley-Davidson Duo Glide FL 1958-1964 Harley-Davidson Duo Glide...
    $211.95
    $163.38
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  • S&S Stock Bore Alternator-Style Crankcase (31-0003)

    S&S Stock Bore Alternator-Style Crankcase (31-0003)

    Cast from A356 T-6 heat-treated aluminum alloy Machined to accept an oil filter assembly that mounts on the front of stock motor cases All races are line-honed and breather cavity is precision-machined to optimize breather timing for maximum oil...
    $2,009.71
    $1,547.50
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  • S&S Super Stock Engine Cases Black Big Bore (31-0078)

    S&S Super Stock Engine Cases Black Big Bore (31-0078)

    S&S - Super Stock Engine Cases Cases are available for 3.5 inch stock and 3.625 inch big bore (specified in title) motors for any stroke up to and including 5 inch and most stock length connecting rods. Machined to accept an oil filter...
    $2,115.71
    $1,626.67
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  • S&S Super Stock Engine Cases Silver (31-0000)

    S&S Super Stock Engine Cases Silver (31-0000)

    S&S - Super Stock Engine Cases Cases are available for 3.5 inch stock and 3.625 inch big bore (specified in title) motors for any stroke up to and including 5 inch and most stock length connecting rods. Machined to accept an oil filter...
    $2,009.71
    $1,547.50
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