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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
  • DRAG SPECIALTIES Transmission Top Cover - Chrome 302091-BX-LB2

    DRAG SPECIALTIES Transmission Top Cover - Chrome 302091-BX-LB2

    DRAG SPECIALTIES

    $89.56
    Beautifully complements other chrome or flat black engine and transmission pieces, Kit 2401-0618 includes two 1/4" - 24 long screws, OEM #1765W; nine 1/4" - 24 short screws, OEM #1766W and one breather screw, OEM #34720-56, Made in the U.S.A.
    DS325530
    SKU:
    DS325530
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    COLOR/FINISH:
    CHROME
    COLOR/FINISH:
    POWDER-COATED
    RIDING STYLE:
    STREET
    TYPE:
    TRANSMISSION TOP
    MOUNTING STYLE:
    5 HOLE
    $89.56
    Qty in Cart: 0
    Quantity:
    Price:
    $89.56
    Subtotal:
  • DRAG SPECIALTIES Offset Sprocket Kit - 22-Tooth 191368-BX-LB1

    DRAG SPECIALTIES Offset Sprocket Kit - 22-Tooth 191368-BX-LB1

    DRAG SPECIALTIES

    $45.71
    Allows installation of extra-wide tires, Kit include offset sprocket and machined spacer
    DS191053
    SKU:
    DS191053
    Availability:
    Ships Same Business Day
    Weight:
    2.25 LBS
    COLOR/FINISH:
    BLACK
    TYPE:
    MAINSHAFT
    OFFSET IMPERIAL:
    0.200'
    PRODUCT NAME:
    SPROCKET
    TOOTH COUNT:
    22
    UNITS:
    KIT
    CHAIN SIZE:
    530
    RIDING STYLE:
    STREET
    $45.71
    Qty in Cart: 0
    Quantity:
    Price:
    $45.71
    Subtotal:
  • DRAG SPECIALTIES Primary Cover - Chrome - '71-'85 FX 210093-BX60

    DRAG SPECIALTIES Primary Cover - Chrome - '71-'85 FX 210093-BX60

    DRAG SPECIALTIES

    $314.10
    Die-cast outer primary covers, Standard eight-hole application, Hardware and bushing not included, Starter shaft bearing must be purchased separately
    DS375623
    SKU:
    DS375623
    Availability:
    Ships Same Business Day
    Weight:
    5.31 LBS
    MOUNTING STYLE:
    8 HOLE
    TYPE:
    OUTER PRIMARY
    COLOR/FINISH:
    CHROME
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $314.10
    Qty in Cart: 0
    Quantity:
    Price:
    $314.10
    Subtotal:
  • DRAG SPECIALTIES Primary Cover - Chrome - '70-'84 FL 210094-BX60

    DRAG SPECIALTIES Primary Cover - Chrome - '70-'84 FL 210094-BX60

    DRAG SPECIALTIES

    $290.41
    Die-cast outer primary covers, Standard eight-hole application, Hardware and bushing not included, Starter shaft bearing must be purchased separately
    DS375624
    SKU:
    DS375624
    Availability:
    Ships Same Business Day
    Weight:
    5.38 LBS
    MATERIAL:
    ALUMINUM
    MOUNTING STYLE:
    8 HOLE
    TYPE:
    OUTER PRIMARY
    UNITS:
    EACH
    COLOR/FINISH:
    CHROME
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    STREET
    $290.41
    Qty in Cart: 0
    Quantity:
    Price:
    $290.41
    Subtotal:
  • On Sale
    Belt Drives Ltd C-Clip for 3in Electric Start 1970-2006 Harley Davidson FLH Electra Glide CC-244

    Belt Drives Ltd C-Clip for 3in Electric Start 1970-2006 Harley Davidson FLH Electra Glide CC-244

    BELT DRIVES LTD.

    MSRP: $11.95
    Now: $10.76
    Was: $11.95
    The BELT DRIVES LTD. C-Clip Hub Bearing CC-244 is specifically designed for optimal performance in BDL Belt Drive clutches. Engineered for durability and precision, this bearing ensures smooth operation and longevity, making it an essential component for...
    DS360407
    SKU:
    DS360407
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    PRODUCT NAME:
    C-CLIP
    RIDING STYLE:
    STREET
    TYPE:
    BEARING
    UNITS:
    EACH
    MSRP: $11.95
    Now: $10.76
    Was: $11.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $11.95
    Now: $10.76
    Was: $11.95
    Subtotal:
  • On Sale
    Belt Drives Ltd C-Clip for 1990-2013 Harley Davidson FLSTF Fat Boy 3in Belt Drive CC-158

    Belt Drives Ltd C-Clip for 1990-2013 Harley Davidson FLSTF Fat Boy 3in Belt Drive CC-158

    BELT DRIVES LTD.

    MSRP: $10.95
    Now: $9.86
    Was: $10.95
    This high-quality C-Clip is specifically designed for use with BDL Belt Drive clutches, ensuring a secure and reliable fit. Crafted for durability and performance, it helps maintain optimal functionality in your belt drive system. ...
    DS360409
    SKU:
    DS360409
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    C-CLIP
    TYPE:
    CLUTCH HUB
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    MSRP: $10.95
    Now: $9.86
    Was: $10.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $10.95
    Now: $9.86
    Was: $10.95
    Subtotal:
  • On Sale
    Belt Drives Ltd Clutch Basket 68 Tooth for Softail and FXR Models EV-475

    Belt Drives Ltd Clutch Basket 68 Tooth for Softail and FXR Models EV-475

    BELT DRIVES LTD.

    MSRP: $338.95
    Now: $305.06
    Was: $338.95
    Experience unmatched performance with the BELT DRIVES LTD. Clutch Basket EV-475, expertly crafted from high-quality aluminum and enhanced with a hard anodized finish. Proudly made in the U.S.A., this clutch basket ensures durability and precision for...
    DS360411
    SKU:
    DS360411
    Availability:
    Ships Same Business Day
    Weight:
    5.80 LBS
    COLOR/FINISH:
    ANODIZED
    PRODUCT NAME:
    CLUTCH BASKET
    NUMBER OF TEETH:
    68
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    MSRP: $338.95
    Now: $305.06
    Was: $338.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $338.95
    Now: $305.06
    Was: $338.95
    Subtotal:
  • On Sale
    Belt Drives Ltd 2" Open Belt Drive Kit for 2017-2019 Harley-Davidson Touring Models EVO-16BH-2B

    Belt Drives Ltd 2" Open Belt Drive Kit for 2017-2019 Harley-Davidson Touring Models EVO-16BH-2B

    BELT DRIVES LTD.

    MSRP: $3,884.95
    Now: $3,496.46
    Was: $3,884.95
    Elevate your ride with the Belt Drive EVO-16BH-2B, engineered for high-performance enthusiasts. This innovative open belt drive kit features a robust one-piece motor plate design, ensuring enhanced stability and a sleek appearance. With a precise 1.32:1...
    11200399
    SKU:
    11200399
    Availability:
    Ships Same Business Day
    Weight:
    42.03 LBS
    SIZE IMPERIAL:
    2'
    COLOR/FINISH:
    BLACK
    TYPE:
    PRIMARY BELT DRIVE
    UNITS:
    KIT
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    BELT DRIVE KIT
    RIDING STYLE:
    STREET
    TOOTH COUNT:
    52
    TOOTH COUNT:
    69
    MSRP: $3,884.95
    Now: $3,496.46
    Was: $3,884.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,884.95
    Now: $3,496.46
    Was: $3,884.95
    Subtotal:
  • On Sale
    Belt Drives Ltd 3" 8mm Drive Belt for Harley-Davidson Dyna 1991-2005 EVOB-122S Belt Drives Ltd 3" 8mm Drive Belt for Harley-Davidson Dyna 1991-2005 EVOB-122S

    Belt Drives Ltd 3" 8mm Drive Belt for Harley-Davidson Dyna 1991-2005 EVOB-122S

    BELT DRIVES LTD.

    MSRP: $2,871.95
    Now: $2,584.76
    Was: $2,871.95
    Enhance your ride with the BELT DRIVES LTD. 3"/8mm Drive Belt EVOB-122S, engineered for optimal performance and reliability. This complete kit offers everything you need for a seamless installation, ensuring a powerful and smooth driving experience. ...
    11200245
    SKU:
    11200245
    Availability:
    Ships Same Business Day
    Weight:
    37.60 LBS
    MATERIAL:
    6061 T-6 BILLET ALUMINUM
    MATERIAL:
    STEEL
    WIDTH IMPERIAL:
    3'
    MATERIAL:
    KEVLAR
    PRODUCT NAME:
    BELT DRIVE KIT
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    MSRP: $2,871.95
    Now: $2,584.76
    Was: $2,871.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $2,871.95
    Now: $2,584.76
    Was: $2,871.95
    Subtotal:
  • On Sale
    Belt Drives Ltd 3" Belt Drive 1986-1989 Softail FXST EVOB-9T

    Belt Drives Ltd 3" Belt Drive 1986-1989 Softail FXST EVOB-9T

    BELT DRIVES LTD.

    MSRP: $2,759.95
    Now: $2,483.96
    Was: $2,759.95
    Upgrade your ride with the Belt Drives Ltd. 3" Belt Drive EVOB-9T, designed for optimal performance and reliability. This comprehensive kit includes everything you need for a seamless installation, ensuring powerful engagement and minimal slippage...
    11200252
    SKU:
    11200252
    Availability:
    Ships Same Business Day
    Weight:
    37.90 LBS
    MATERIAL:
    KEVLAR
    PRODUCT NAME:
    BELT DRIVE KIT
    MATERIAL:
    6061 T-6 BILLET ALUMINUM
    MATERIAL:
    STEEL
    UNITS:
    EACH
    RIDING STYLE:
    STREET
    WIDTH IMPERIAL:
    3'
    MSRP: $2,759.95
    Now: $2,483.96
    Was: $2,759.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $2,759.95
    Now: $2,483.96
    Was: $2,759.95
    Subtotal:
  • On Sale
    Belt Drives Ltd 1-5/8" Belt Drive with Chain for 1980-1983 Harley-Davidson Tour Glide FLT EVBB-3T-5

    Belt Drives Ltd 1-5/8" Belt Drive with Chain for 1980-1983 Harley-Davidson Tour Glide FLT EVBB-3T-5

    BELT DRIVES LTD.

    MSRP: $1,116.95
    Now: $1,005.26
    Was: $1,116.95
    Experience superior performance with the Belt Drives Ltd. 1-5/8" Belt Drive system, designed for seamless integration and optimal efficiency. This kit includes everything you need for a direct bolt-in application, ensuring a hassle-free installation and...
    11200253
    SKU:
    11200253
    Availability:
    Ships Same Business Day
    Weight:
    15.80 LBS
    PRODUCT NAME:
    BELT DRIVE KIT
    RIDING STYLE:
    STREET
    MATERIAL:
    6061 T-6 BILLET ALUMINUM
    MATERIAL:
    STEEL
    UNITS:
    EACH
    WIDTH IMPERIAL:
    1-5/8'
    MATERIAL:
    KEVLAR
    MSRP: $1,116.95
    Now: $1,005.26
    Was: $1,116.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,116.95
    Now: $1,005.26
    Was: $1,116.95
    Subtotal:
  • On Sale
    BARNETT Drive Plate 401-30-047010

    BARNETT Drive Plate 401-30-047010

    BARNETT

    MSRP: $8.79
    Now: $7.91
    Was: $8.79
    Designed to perform under extreme heat conditions, Allow smooth, precise shifting, Can be run wet or dry, Steel plates are manufactured under strict quality-control standards, Made in the U.S.A.
    DS223746
    SKU:
    DS223746
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    RIDING STYLE:
    STREET
    DRIVE PLATE MATERIAL:
    STEEL
    TYPE:
    CLUTCH
    PRODUCT NAME:
    DRIVE PLATE
    UNITS:
    EACH
    MSRP: $8.79
    Now: $7.91
    Was: $8.79
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $8.79
    Now: $7.91
    Was: $8.79
    Subtotal:
  • On Sale
    BARNETT Drive Plate 401-30-063012

    BARNETT Drive Plate 401-30-063012

    BARNETT

    MSRP: $8.79
    Now: $7.91
    Was: $8.79
    Designed to perform under extreme heat conditions, Allow smooth, precise shifting, Can be run wet or dry, Steel plates are manufactured under strict quality-control standards, Made in the U.S.A.
    DS223747
    SKU:
    DS223747
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    RIDING STYLE:
    STREET
    DRIVE PLATE MATERIAL:
    STEEL
    TYPE:
    CLUTCH
    PRODUCT NAME:
    DRIVE PLATE
    UNITS:
    EACH
    MSRP: $8.79
    Now: $7.91
    Was: $8.79
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $8.79
    Now: $7.91
    Was: $8.79
    Subtotal:
  • On Sale
    ALTO PRODUCTS Clutch Friction Plate Set 095752KA

    ALTO PRODUCTS Clutch Friction Plate Set 095752KA

    ALTO PRODUCTS

    MSRP: $124.95
    Now: $80.00
    Was: $124.95
    Increased surface area for decreased slipping, Increased surface area for decreased slipping, Increase holding while decreasing heat generation, Increases holding while decreasing heat generation, Precision-made steel plates, Can be run wet or dry, Can...
    11310471
    SKU:
    11310471
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    PRODUCT NAME:
    FRICTION PLATE SET
    RIDING STYLE:
    STREET
    FRICTION PLATE MATERIAL:
    KEVLAR
    TYPE:
    CLUTCH
    UNITS:
    SET OF 7
    MSRP: $124.95
    Now: $80.00
    Was: $124.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $124.95
    Now: $80.00
    Was: $124.95
    Subtotal:
  • ALTO PRODUCTS Clutch Friction Plate Set 095752KC

    ALTO PRODUCTS Clutch Friction Plate Set 095752KC

    ALTO PRODUCTS

    $73.95
    Increased surface area for decreased slipping, Increased surface area for decreased slipping, Increase holding while decreasing heat generation, Increases holding while decreasing heat generation, Precision-made steel plates, Can be run wet or dry, Can...
    11310473
    SKU:
    11310473
    Availability:
    Ships Same Business Day
    Weight:
    2.82 LBS
    PRODUCT NAME:
    FRICTION PLATE SET
    FRICTION PLATE MATERIAL:
    KEVLAR
    TYPE:
    CLUTCH
    UNITS:
    SET OF 4
    RIDING STYLE:
    STREET
    $73.95
    Qty in Cart: 0
    Quantity:
    Price:
    $73.95
    Subtotal:
  • ALTO PRODUCTS Clutch Friction Plate Set 095752KD

    ALTO PRODUCTS Clutch Friction Plate Set 095752KD

    ALTO PRODUCTS

    $90.95
    Increased surface area for decreased slipping, Increased surface area for decreased slipping, Increase holding while decreasing heat generation, Increases holding while decreasing heat generation, Precision-made steel plates, Can be run wet or dry, Can...
    11310474
    SKU:
    11310474
    Availability:
    Ships Same Business Day
    Weight:
    3.41 LBS
    FRICTION PLATE MATERIAL:
    KEVLAR
    TYPE:
    CLUTCH
    UNITS:
    SET OF 5
    PRODUCT NAME:
    FRICTION PLATE SET
    RIDING STYLE:
    STREET
    $90.95
    Qty in Cart: 0
    Quantity:
    Price:
    $90.95
    Subtotal:
  • ALTO PRODUCTS Clutch Friction Plate Set 095752KF

    ALTO PRODUCTS Clutch Friction Plate Set 095752KF

    ALTO PRODUCTS

    $122.95
    Increased surface area for decreased slipping, Increased surface area for decreased slipping, Increase holding while decreasing heat generation, Increases holding while decreasing heat generation, Precision-made steel plates, Can be run wet or dry, Can...
    11310476
    SKU:
    11310476
    Availability:
    Ships Same Business Day
    Weight:
    1.45 LBS
    FRICTION PLATE MATERIAL:
    KEVLAR
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    FRICTION PLATE SET
    TYPE:
    CLUTCH
    UNITS:
    SET OF 7
    $122.95
    Qty in Cart: 0
    Quantity:
    Price:
    $122.95
    Subtotal:
  • ALTO PRODUCTS Clutch Friction Plate Set 095752KP

    ALTO PRODUCTS Clutch Friction Plate Set 095752KP

    ALTO PRODUCTS

    $126.95
    Increased surface area for decreased slipping, Increased surface area for decreased slipping, Increase holding while decreasing heat generation, Increases holding while decreasing heat generation, Precision-made steel plates, Can be run wet or dry, Can...
    11310477
    SKU:
    11310477
    Availability:
    Ships Same Business Day
    Weight:
    1.03 LBS
    PRODUCT NAME:
    FRICTION PLATE SET
    RIDING STYLE:
    STREET
    UNITS:
    SET OF 9
    FRICTION PLATE MATERIAL:
    KEVLAR
    TYPE:
    CLUTCH
    $126.95
    Qty in Cart: 0
    Quantity:
    Price:
    $126.95
    Subtotal:
  • ALTO PRODUCTS Steel Plate Set 095753A

    ALTO PRODUCTS Steel Plate Set 095753A

    ALTO PRODUCTS

    $42.95
    Precision-made
    11310479
    SKU:
    11310479
    Availability:
    Ships Same Business Day
    Weight:
    1.06 LBS
    PRODUCT NAME:
    PLATE SET
    RIDING STYLE:
    STREET
    MATERIAL:
    STEEL
    TYPE:
    CLUTCH
    UNITS:
    SET OF 5
    $42.95
    Qty in Cart: 0
    Quantity:
    Price:
    $42.95
    Subtotal:
  • ALTO PRODUCTS Steel Plate Set with Anti-Rattler - Big Twin '41-'67 095753AC

    ALTO PRODUCTS Steel Plate Set with Anti-Rattler - Big Twin '41-'67 095753AC

    ALTO PRODUCTS

    $48.95
    Precision-made with anti-rattler
    11310480
    SKU:
    11310480
    Availability:
    Ships Same Business Day
    Weight:
    2.31 LBS
    MATERIAL:
    STEEL
    TYPE:
    CLUTCH
    PRODUCT NAME:
    PLATE SET
    RIDING STYLE:
    STREET
    UNITS:
    SET OF 3
    Qty in Cart: 0
    Quantity:
    Price:
    $48.95
    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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