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Engine Bottom End / Oil Pump

Today’s big inch, high performance Harley® engines produce a lot of power with just a twist of the throttle. That power can be a lot of fun, but can also create a lot of stress and wear on critical bottom end and oil pump components. Additionally, a healthy, well-performing oiling system is critical to ease the heat and stress of fast-moving, high demand parts like pistons and cams. If you’re considering a big inch build, or want to upgrade parts on an existing engine, Zipper’s Performance offers the strongest, most reliable and innovative components on the market. Here you’ll find the latest offerings from Zipper’s as well as notable manufacturers like Feuling®, JIMS®, S&S® and Timken®.
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    As low as: $1,350.00

    Want the strongest foundation for your Twin Cam® engine? Let us supply you with a new S&S® crankshaft assembly.
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    From: $1,259.95

    To: $8,033.70

    These S&S® crankshaft assemblies are perfect for reconditioning and high performance applications. These crankshafts are balanced and assembled by S&S® with standard diameter flywheels and S&S® heavy-duty rods. We can supply you with a balanced, assembled and trued crankshaft, stock stroke or stroker, that’s ready to install in your case.
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    From: $122.95

    To: $420.85

    “Some shafts drive you nuts... our shafts come with them!” is the slogan from S&S®. Sprocket shafts are specially designed with oversize 6 degree tapers and heavy-duty keyways for use with like-machined S&S ® flywheels. Big Twin pinion shafts can be used in S&S® or factory flywheels that have replaceable shafts. And, as stated, all come with the hardware required to install them into the flywheels.
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    From: $139.95

    To: $349.90

    Over the years, H-D® has made design changes in the cam drive system that compromised strength when output of the engine was increased. There have been many cases of the pinion gear shearing the key and spinning on the shaft, causing the valve train to crash in performance applications. S&S® crankshafts use the earlier, stronger design.