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Monster Flatheads

  • Billet Crankshaft, 3.00"X 1"

    6565 Billet Crankshaft, 3.00"X 1"

    ARC Billet Alloy Crankshaft, 3.00" Stroke X 1" Rod Journal. Designed with extra cam clearance om counter weights for the ZR4 and similiar aftermarket blocks. Will not fit Briggs Raptor and Blockzilla applications. 
    $765.19
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  • Billet Chromoly Crankshaft, 3.00"X 1"

    6565-C Billet Chromoly Crankshaft, 3.00"X 1"

    ARC Billet Chromoly Crankshaft, 3.00" Stroke X 1" Rod Journal. Designed with extra cam clearance om counter weights for the ZR4 and similiar aftermarket blocks. Will not fit Briggs Raptor and Blockzilla applications. 
    $596.58
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  • Sold out
    6575 ARC Billet Crankshaft, 3.100" X 1"

    6575 ARC Billet Crankshaft, 3.100" X 1"

    CNC machined toughest material ever used for small 4 stroke engines. Features a true 1/8" journal radius for strength and durability. Also features airplane wing style counter weights that are proportionaly designed for superior balance. ARC's...
    $765.19
    Out of stock
  • 6576 ARC Billet Crankshaft, 3.100" X 1" 3/8-24

    6576 ARC Billet Crankshaft, 3.100" X 1" 3/8-24

    CNC machined toughest material ever used for small 4 stroke engines. Features a true 1/8" journal radius for strength and durability. Also features airplane wing style counter weights that are proportionally designed for superior balance. ARC's new #6576...
    $705.53
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  • 6577 ARC Billet Crankshaft, 3.100" X 1" Spline

    6577 ARC Billet Crankshaft, 3.100" X 1" Spline

    NEW 6577 ARC Billet Crankshaft  3.100" X 1"  SplinedThe ARC Splined Crank utilizes a 10 tooth straight sided spline that creates a much greater load displacing area than a normal keyed crank. No more broken PTO shafts and makes clutch removal a...
    $805.54
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  • 6595 ARC Billet Crank +.563 Stroke X 1" Journal

    6595 ARC Billet Crank +.563 Stroke X 1" Journal

    CNC machined toughest material ever used for small 4 stroke engines. Features a true 1/8" journal radius for strength and durability. Also features airplane wing style counter weights that are proportionally designed for superior balance. The #6595...
    $765.19
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  • 6597 ARC Billet Splined Crankshaft +.563" X 1

    6597 ARC Billet Splined Crankshaft +.563" X 1

    The ARC Splined Alloy Crank utilizes a 10 tooth straight sided spline that creates a much greater load dispersion area than a normal keyed crank. No more broken PTO shafts and makes clutch removal a breeze. A must for today's high...
    $857.67
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