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Harley Drivetrain

Harley Drivetrain

Harley Drivetrain

Harley Bike Drivetrain Parts at JJ Motorsports

Upgrade your Harley's drivetrain for smoother power delivery and reliability with components from JJ Motorsports. Our selection includes transmission mounting plates, offset sprockets, mechanical reverse kits, starter spacers, pulley spacers, and primary covers designed for heavy-duty use, easy bolt-in installation, and enhanced performance. Compatible with Big Twins, Softail, Dyna, and more, these parts feature chrome finishes, billet aluminum, and CNC-machined steel for corrosion resistance and custom fitment.

Shop trusted brands like Paughco for primary covers and PBI for sprockets. Explore related categories such as Harley engine parts for rebuilds or Harley suspension for balanced setups.

Top Harley Drivetrain Products

Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • POWERSTANDS RACING Primary Chain Tensioner 12-02000-22

    POWERSTANDS RACING Primary Chain Tensioner 12-02000-22

    POWERSTANDS RACING

    $222.95
    Helps with over tightening; easy to adjust, Heavy-duty manual tensioner, Precision machined from billet aluminum, Mounts with OEM hardware
    11200408
    SKU:
    11200408
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    COLOR/FINISH:
    BLACK
    MATERIAL:
    BILLET ALUMINUM
    PRODUCT NAME:
    CHAIN TENSIONER
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $222.95
    Qty in Cart: 0
    Quantity:
    Price:
    $222.95
    Subtotal:
  • POWERSTANDS RACING Primary Chain Tensioner 12-02002-22

    POWERSTANDS RACING Primary Chain Tensioner 12-02002-22

    POWERSTANDS RACING

    $222.95
    POWERSTANDS RACING Primary Chain Tensioner
    11200424
    SKU:
    11200424
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    PRODUCT NAME:
    CHAIN TENSIONER
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $222.95
    Qty in Cart: 0
    Quantity:
    Price:
    $222.95
    Subtotal:
  • PANTHER Rear Drive Belt - 132-Tooth - 1 1/2" 62-0938

    PANTHER Rear Drive Belt - 132-Tooth - 1 1/2" 62-0938

    PANTHER

    $273.95
    Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...
    DS197001
    SKU:
    DS197001
    Availability:
    Ships Same Business Day
    Weight:
    1.88 LBS
    RIDING STYLE:
    STREET
    WIDTH IMPERIAL:
    1-1/2'
    PRODUCT NAME:
    BELT
    TOOTH COUNT:
    132
    TYPE:
    REAR DRIVE
    UNITS:
    EACH
    $273.95
    Qty in Cart: 0
    Quantity:
    Price:
    $273.95
    Subtotal:
  • PANTHER Rear Drive Belt - 136-Tooth - 1 1/2" 62-0964

    PANTHER Rear Drive Belt - 136-Tooth - 1 1/2" 62-0964

    PANTHER

    $282.95
    Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...
    DS197002
    SKU:
    DS197002
    Availability:
    Ships Same Business Day
    Weight:
    1.81 LBS
    TYPE:
    REAR DRIVE
    WIDTH IMPERIAL:
    1-1/2'
    PRODUCT NAME:
    BELT
    TOOTH COUNT:
    136
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $282.95
    Qty in Cart: 0
    Quantity:
    Price:
    $282.95
    Subtotal:
  • PANTHER Rear Drive Belt - 126-Tooth - 1 1/2" 62-0940

    PANTHER Rear Drive Belt - 126-Tooth - 1 1/2" 62-0940

    PANTHER

    $265.95
    Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...
    DS197003
    SKU:
    DS197003
    Availability:
    Ships Same Business Day
    Weight:
    1.75 LBS
    TYPE:
    REAR DRIVE
    UNITS:
    EACH
    WIDTH IMPERIAL:
    1-1/2'
    PRODUCT NAME:
    BELT
    RIDING STYLE:
    STREET
    TOOTH COUNT:
    126
    $265.95
    Qty in Cart: 0
    Quantity:
    Price:
    $265.95
    Subtotal:
  • PANTHER Rear Drive Belt - 130-Tooth - 1 1/2" 62-0941

    PANTHER Rear Drive Belt - 130-Tooth - 1 1/2" 62-0941

    PANTHER

    $270.95
    Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...
    DS197004
    SKU:
    DS197004
    Availability:
    Ships Same Business Day
    Weight:
    1.81 LBS
    PRODUCT NAME:
    BELT
    TYPE:
    REAR DRIVE
    UNITS:
    EACH
    RIDING STYLE:
    STREET
    TOOTH COUNT:
    130
    WIDTH IMPERIAL:
    1-1/2'
    $270.95
    Qty in Cart: 0
    Quantity:
    Price:
    $270.95
    Subtotal:
  • PANTHER Rear Drive Belt - 128-Tooth - 1 1/2" 62-0943

    PANTHER Rear Drive Belt - 128-Tooth - 1 1/2" 62-0943

    PANTHER

    $253.95
    Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...
    DS197006
    SKU:
    DS197006
    Availability:
    Ships Same Business Day
    Weight:
    1.75 LBS
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    BELT
    TOOTH COUNT:
    128
    UNITS:
    EACH
    TYPE:
    REAR DRIVE
    WIDTH IMPERIAL:
    1-1/2'
    $253.95
    Qty in Cart: 0
    Quantity:
    Price:
    $253.95
    Subtotal:
  • PANTHER Rear Drive Belt - 150-Tooth - 1 3/8" 62-1232

    PANTHER Rear Drive Belt - 150-Tooth - 1 3/8" 62-1232

    PANTHER

    $281.95
    Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...
    23020001
    SKU:
    23020001
    Availability:
    Ships Same Business Day
    Weight:
    2.05 LBS
    PRODUCT NAME:
    BELT
    TOOTH COUNT:
    150
    WIDTH IMPERIAL:
    1-3/8'
    RIDING STYLE:
    STREET
    TYPE:
    REAR DRIVE
    UNITS:
    EACH
    $281.95
    Qty in Cart: 0
    Quantity:
    Price:
    $281.95
    Subtotal:
  • PANTHER Rear Drive Belt - 139-Tooth - 1 1/2" 62-1178

    PANTHER Rear Drive Belt - 139-Tooth - 1 1/2" 62-1178

    PANTHER

    $291.95
    Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...
    MBR139
    SKU:
    MBR139
    Availability:
    Ships Same Business Day
    Weight:
    1.90 LBS
    TOOTH COUNT:
    139
    PRODUCT NAME:
    BELT
    UNITS:
    EACH
    TYPE:
    REAR DRIVE
    WIDTH IMPERIAL:
    1-1/2'
    RIDING STYLE:
    STREET
    $291.95
    Qty in Cart: 0
    Quantity:
    Price:
    $291.95
    Subtotal:
  • MAGNUM Hydraulic Clutch Line - 74" 31274CVO

    MAGNUM Hydraulic Clutch Line - 74" 31274CVO

    MAGNUM

    $126.95
    Allows brake calipers to be moved to different mounting locations, including radial brake caliper relocations, Caliper lines are extended and incorporate EZ-Align banjos for easy installation, Plus 2 or plus 4-inch length stock style, two-line...
    11321479
    SKU:
    11321479
    Availability:
    Ships Same Business Day
    Weight:
    0.26 LBS
    MATERIAL:
    DUPONT™ KEVLAR®
    RIDING STYLE:
    STREET
    TYPE:
    HYDRAULIC
    CONNECTOR TYPE:
    10 MM 35° BANJO FITTING
    PRODUCT NAME:
    CLUTCH LINE
    LENGTH IMPERIAL:
    74'
    UNITS:
    EACH
    BRAND SPECIFIC COLOR:
    STERLING CHROMITE II
    MATERIAL:
    PTFE
    $126.95
    Qty in Cart: 0
    Quantity:
    Price:
    $126.95
    Subtotal:
  • MAGNUM Hydraulic Clutch Line - 70" 31270CVO

    MAGNUM Hydraulic Clutch Line - 70" 31270CVO

    MAGNUM

    $126.95
    Allows brake calipers to be moved to different mounting locations, including radial brake caliper relocations, Caliper lines are extended and incorporate EZ-Align banjos for easy installation, Plus 2 or plus 4-inch length stock style, two-line...
    11321481
    SKU:
    11321481
    Availability:
    Ships Same Business Day
    Weight:
    0.24 LBS
    RIDING STYLE:
    STREET
    MATERIAL:
    PTFE
    PRODUCT NAME:
    CLUTCH LINE
    UNITS:
    EACH
    BRAND SPECIFIC COLOR:
    STERLING CHROMITE II
    TYPE:
    HYDRAULIC
    CONNECTOR TYPE:
    10 MM 35° BANJO FITTING
    LENGTH IMPERIAL:
    70'
    MATERIAL:
    DUPONT™ KEVLAR®
    $126.95
    Qty in Cart: 0
    Quantity:
    Price:
    $126.95
    Subtotal:
  • MAGNUM Hydraulic Clutch Line - 78" 31278CVO

    MAGNUM Hydraulic Clutch Line - 78" 31278CVO

    MAGNUM

    $129.95
    Allows brake calipers to be moved to different mounting locations, including radial brake caliper relocations, Caliper lines are extended and incorporate EZ-Align banjos for easy installation, Plus 2 or plus 4-inch length stock style, two-line...
    11321485
    SKU:
    11321485
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    MATERIAL:
    DUPONT™ KEVLAR®
    TYPE:
    HYDRAULIC
    BRAND SPECIFIC COLOR:
    STERLING CHROMITE II
    CONNECTOR TYPE:
    10 MM 35° BANJO FITTING
    LENGTH IMPERIAL:
    78'
    MATERIAL:
    PTFE
    PRODUCT NAME:
    CLUTCH LINE
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $129.95
    Qty in Cart: 0
    Quantity:
    Price:
    $129.95
    Subtotal:
  • MAGNUM Hydraulic Clutch Line - 78" 41278CVO

    MAGNUM Hydraulic Clutch Line - 78" 41278CVO

    MAGNUM

    $130.95
    Allows brake calipers to be moved to different mounting locations, including radial brake caliper relocations, Caliper lines are extended and incorporate EZ-Align banjos for easy installation, Plus 2 or plus 4-inch length stock style, two-line...
    11321487
    SKU:
    11321487
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    MATERIAL:
    DUPONT™ KEVLAR®
    MATERIAL:
    PTFE
    UNITS:
    EACH
    BRAND SPECIFIC COLOR:
    BLACK PEARL
    CONNECTOR TYPE:
    10 MM 35° BANJO FITTING
    LENGTH IMPERIAL:
    78'
    PRODUCT NAME:
    CLUTCH LINE
    RIDING STYLE:
    STREET
    TYPE:
    HYDRAULIC
    $130.95
    Qty in Cart: 0
    Quantity:
    Price:
    $130.95
    Subtotal:
  • MAGNUM Build-Your-Own Clutch Fitting - Hydraulic 391140

    MAGNUM Build-Your-Own Clutch Fitting - Hydraulic 391140

    MAGNUM

    $32.95
    Patented design meets all FMVSS-106 Standards for safe and reliable on-road use (see compatibility note below), Assembles in 5 minutes with only side cutters and 7/16?" wrench, All components and hoses are available separately to build your own clutch...
    11321122
    SKU:
    11321122
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    COLOR/FINISH:
    CHROME
    MATERIAL:
    STAINLESS STEEL
    MODEL:
    BUILD YOUR OWN (BYO)
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    FITTING
    TYPE:
    CLUTCH
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $32.95
    Subtotal:
  • On Sale
    MAGNUM Hydraulic Clutch Line - KARBONFIBR 71776

    MAGNUM Hydraulic Clutch Line - KARBONFIBR 71776

    MAGNUM

    MSRP: $127.95
    Now: $82.00
    Was: $127.95
    MAGNUM Hydraulic Clutch Line - KARBONFIBR
    11321593
    SKU:
    11321593
    Availability:
    Ships Same Business Day
    Weight:
    1.35 LBS
    MSRP: $127.95
    Now: $82.00
    Was: $127.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $127.95
    Now: $82.00
    Was: $127.95
    Subtotal:
  • MAGNUM Build-Your-Own Clutch Fitting - Stainless 391120

    MAGNUM Build-Your-Own Clutch Fitting - Stainless 391120

    MAGNUM

    $34.95
    Patented design meets all FMVSS-106 Standards for safe and reliable on-road use (see compatibility note below), Assembles in 5 minutes with only side cutters and 7/16?" wrench, All components and hoses are available separately to build your own clutch...
    11320818
    SKU:
    11320818
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    COLOR/FINISH:
    CHROME
    MATERIAL:
    STAINLESS STEEL
    MODEL:
    BUILD YOUR OWN (BYO)
    UNITS:
    EACH
    PRODUCT NAME:
    FITTING
    RIDING STYLE:
    STREET
    TYPE:
    CLUTCH
    Qty in Cart: 0
    Quantity:
    Price:
    $34.95
    Subtotal:
  • MAGNUM Build-Your-Own Clutch Fitting - Stainless 391130

    MAGNUM Build-Your-Own Clutch Fitting - Stainless 391130

    MAGNUM

    $31.95
    Patented design meets all FMVSS-106 Standards for safe and reliable on-road use (see compatibility note below), Assembles in 5 minutes with only side cutters and 7/16?" wrench, All components and hoses are available separately to build your own clutch...
    11320819
    SKU:
    11320819
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    COLOR/FINISH:
    CHROME
    MATERIAL:
    STAINLESS STEEL
    MODEL:
    BUILD YOUR OWN (BYO)
    UNITS:
    EACH
    TYPE:
    CLUTCH
    PRODUCT NAME:
    FITTING
    RIDING STYLE:
    STREET
    $31.95
    Qty in Cart: 0
    Quantity:
    Price:
    $31.95
    Subtotal:
  • MAGNUM Clutch Line 31580

    MAGNUM Clutch Line 31580

    MAGNUM

    $129.95
    Constructed with PTFE inner tubing, DuPont Kevlar aramid fiber, premium Signature Magnum braids and an outer PVC jacket, Three unique stainless steel transmission fittings eliminate the use of adapters, Braid color and weave match all other Magnum...
    11321007
    SKU:
    11321007
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    CHROME
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    CLUTCH LINE
    UNITS:
    EACH
    CONNECTOR TYPE:
    10 MM 35° BANJO FITTING
    BRAND SPECIFIC COLOR:
    STERLING CHROMITE II
    LENGTH IMPERIAL:
    80'
    TYPE:
    HYDRAULIC
    $129.95
    Qty in Cart: 0
    Quantity:
    Price:
    $129.95
    Subtotal:
  • MAGNUM Clutch Line 41580

    MAGNUM Clutch Line 41580

    MAGNUM

    $131.95
    Constructed with PTFE inner tubing, DuPont Kevlar aramid fiber, premium Signature Magnum braids and an outer PVC jacket, Three unique stainless steel transmission fittings eliminate the use of adapters, Braid color and weave match all other Magnum...
    11321012
    SKU:
    11321012
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    BRAND SPECIFIC COLOR:
    BLACK PEARL
    CONNECTOR TYPE:
    10 MM 35° BANJO FITTING
    PRODUCT NAME:
    CLUTCH LINE
    COLOR/FINISH:
    BLACK
    TYPE:
    HYDRAULIC
    LENGTH IMPERIAL:
    80'
    MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $131.95
    Qty in Cart: 0
    Quantity:
    Price:
    $131.95
    Subtotal:
  • MAGNUM Clutch Line 41582

    MAGNUM Clutch Line 41582

    MAGNUM

    $137.95
    Constructed with PTFE inner tubing, DuPont Kevlar aramid fiber, premium Signature Magnum braids and an outer PVC jacket, Three unique stainless steel transmission fittings eliminate the use of adapters, Braid color and weave match all other Magnum...
    11321013
    SKU:
    11321013
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    BRAND SPECIFIC COLOR:
    BLACK PEARL
    CONNECTOR TYPE:
    10 MM 35° BANJO FITTING
    PRODUCT NAME:
    CLUTCH LINE
    TYPE:
    HYDRAULIC
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    LENGTH IMPERIAL:
    82'
    MATERIAL:
    STAINLESS STEEL
    $137.95
    Qty in Cart: 0
    Quantity:
    Price:
    $137.95
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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