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  • ENGINE KITS
  • SHORT BLOCKS
  • ROTATING ASSEMBLIES
  • ENGINE BLOCKS
  • CYLINDER HEADS
  • ENGINE COMPONENTS
  • AIR & FUEL DELIVERY
  • CAMSHAFTS & VALVE TRAIN COMPONENTS
  • COOLING SYSTEM
  • ENGINE DRESS-UP KITS
  • FASTENERS
  • FITTINGS & PLUMBING
  • FLEXPLATES AND FLYWHEELS
  • GASKETS
  • IGNITION & COMPONENTS
  • OIL SYSTEM
  • STARTERS
  • TOOLS
  • VALVE COVERS

    • Shop by Brand

  • PBM Performance Products
  • Erson Cams
  • ARP
  • Cometic
  • World Products
  • Fel-Pro
  • Clevite
  • Melling
  • Erson Cams / Morel
  • King Racing
  • LPC
  • Motorsports Unlimited
  • Pro-Filer
  • WISECO
  • Moroso
  • CVR Starters
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  • Milodon
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    • POLYLOCKS

    Our Polylocks are made from 4130 Crome moly(not zinc alloy) and are precision ground for minimum run-out. This design ensures that our polylocks will hold under the stress of high rpm engines. They are available in 3/8 or 7/16.

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