Harley-Davidson Engine Parts & Performance Upgrades

Get more out of your Harley-Davidson with engine and performance parts from Kruesi Originals. Explore camshafts, cam chest kits, air cleaners, fuel system components, and tuning upgrades.

Find engine components for Twin Cam, Milwaukee-Eight, Sportster, and other Harley-Davidson motorcycles to support your performance build.

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  • Blud Lubricants HAWGBLUD™ Engine Oil

    Blud Lubricants HAWGBLUD™ Engine Oil

    Blud Lubricants HAWGBLUD™ Engine Oil

    $24.20
    Sale price  $24.20 Regular price 
  • Big Bear Dyna Front Motor Mount

    Big Bear Dyna Front Motor Mount

    Big Bear Dyna Front Motor Mount

    $450.00
    Sale price  $450.00 Regular price 
  • Oil Filters

    Oil Filters

    Oil Filters

    $15.70
    Sale price  $15.70 Regular price 
  • S&S Complete Cam Chest Kits for M8 Models

    S&S Complete Cam Chest Kits for M8 Models

    S&S Complete Cam Chest Kits for M8 Models

    $1,721.95
    Sale price  $1,721.95 Regular price 
  • Motul Synthetic Primary Chaincase Oil for Big Twin

    Motul Synthetic Primary Chaincase Oil for Big Twin

    Motul Synthetic Primary Chaincase Oil for Big Twin

    $26.50
    Sale price  $26.50 Regular price 
  • Kruesi Originals Race-Spec Oversized Radiator for RH975 Nightster Models

    Kruesi Originals Race-Spec Oversized Radiator for RH975 Nightster Models

    Kruesi Originals Race-Spec Oversized Radiator for RH975 Nightster Models

    $994.95
    Sale price  $994.95 Regular price 
  • Alloy Art Gooden-Tite ISO Front Motor Mount for 1999-2008 Touring Models

    Alloy Art Gooden-Tite ISO Front Motor Mount for 1999-2008 Touring Models

    Alloy Art Gooden-Tite ISO Front Motor Mount for 1999-2008 Touring Models

    $112.95
    Sale price  $112.95 Regular price 
  • UltraCool Side Mount Oil Cooler Kit for 1991-2017 Harley-Davidson Dyna

    UltraCool Side Mount Oil Cooler Kit for 1991-2017 Harley-Davidson Dyna

    UltraCool Side Mount Oil Cooler Kit for 1991-2017 Harley-Davidson Dyna

    $589.99
    Sale price  $589.99 Regular price 
  • Feuling Rocker Stud Kit for M8 Models

    Feuling Rocker Stud Kit for M8 Models

    Feuling Rocker Stud Kit for M8 Models

    $145.95
    Sale price  $145.95 Regular price 
  • Drag Specialties Crankcase Breather Kit for 1999-2017 Big Twin

    Drag Specialties Crankcase Breather Kit for 1999-2017 Big Twin

    Drag Specialties Crankcase Breather Kit for 1999-2017 Big Twin

    $75.95
    Sale price  $75.95 Regular price 
  • S&S Tappet Cuffs Lifter Guides for 2017+ M8 Models

    S&S Tappet Cuffs Lifter Guides for 2017+ M8 Models

    S&S Tappet Cuffs Lifter Guides for 2017+ M8 Models

    $79.95
    Sale price  $79.95 Regular price 
  • S&S Cycle Quickee Adjustable Pushrod Kit for Twin Cam Models

    S&S Cycle Quickee Adjustable Pushrod Kit for Twin Cam Models

    S&S Cycle Quickee Adjustable Pushrod Kit for Twin Cam Models

    $336.95
    Sale price  $336.95 Regular price 
  • S&S Cycle Quickee Pushrod Kits (M8)

    S&S Cycle Quickee Pushrod Kits (M8)

    S&S Cycle Quickee Pushrod Kits (M8)

    $314.95
    Sale price  $314.95 Regular price 
  • Feuling Vented Dipstick

    Feuling Vented Dipstick

    Feuling Vented Dipstick

    $299.95
    Sale price  $299.95 Regular price 
  • Complete Transmission Gasket Kit for 1999–2017 Dyna Models

    Complete Transmission Gasket Kit for 1999–2017 Dyna Models

    Complete Transmission Gasket Kit for 1999–2017 Dyna Models

    $47.20
    Sale price  $47.20 Regular price 
  • Complete Twin Cam Top End Rebuild Gasket Kit

    Complete Twin Cam Top End Rebuild Gasket Kit

    Complete Twin Cam Top End Rebuild Gasket Kit

    $183.70
    Sale price  $183.70 Regular price 
  • Arlen Ness Stage 1 Big Sucker Replacement Air Filter

    Arlen Ness Stage 1 Big Sucker Replacement Air Filter

    Arlen Ness Stage 1 Big Sucker Replacement Air Filter

    $75.95
    Sale price  $75.95 Regular price 
  • Arlen Ness Big Sucker Stage 1 Air Cleaner for 1991–2022 Sportster XL

    Arlen Ness Big Sucker Stage 1 Air Cleaner for 1991–2022 Sportster XL

    Arlen Ness Big Sucker Stage 1 Air Cleaner for 1991–2022 Sportster XL

    $239.95
    Sale price  $239.95 Regular price 
  • Dark Horse Man O-War Motor Sprocket for 2017–2026 M8 Models

    Dark Horse Man O-War Motor Sprocket for 2017–2026 M8 Models

    Dark Horse Man O-War Motor Sprocket for 2017–2026 M8 Models

    $579.95
    Sale price  $579.95 Regular price 
  • Chrome Cam Cover for Twin Cam Models

    Chrome Cam Cover for Twin Cam Models

    Chrome Cam Cover for Twin Cam Models

    $129.27
    Sale price  $129.27 Regular price 
  • Feuling Crankshaft Runout Measuring Tool

    Feuling Crankshaft Runout Measuring Tool

    Feuling Crankshaft Runout Measuring Tool

    $129.95
    Sale price  $129.95 Regular price 
  • Trask Assault Charge High-Flow Air Cleaner for Gen 2 M8 Models

    Trask Assault Charge High-Flow Air Cleaner for Gen 2 M8 Models

    Trask Assault Charge High-Flow Air Cleaner for Gen 2 M8 Models

    $539.95
    Sale price  $539.95 Regular price 
  • S&S Precision Hydraulic Lifters for Twin Cam, M8 & Sportster XL

    S&S Precision Hydraulic Lifters for Twin Cam, M8 & Sportster XL

    S&S Precision Hydraulic Lifters for Twin Cam, M8 & Sportster XL

    $279.95
    Sale price  $279.95 Regular price 
  • Feuling HP+ Cam Chest Kits for M8 Models

    Feuling HP+ Cam Chest Kits for M8 Models

    Feuling HP+ Cam Chest Kits for M8 Models

    $1,795.95
    Sale price  $1,795.95 Regular price