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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
  • ANDREWS Stock Cluster Gear 206335

    ANDREWS Stock Cluster Gear 206335

    ANDREWS

    $216.95
    Sold individually, unless noted.
    DS199427
    SKU:
    DS199427
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    PRODUCT NAME:
    GEAR
    RIDING STYLE:
    STREET
    THIRD GEAR RATIO:
    1.23:1
    TYPE:
    STOCK CLUSTER
    UNITS:
    EACH
    STYLE:
    STANDARD RATIO
    $216.95
    Qty in Cart: 0
    Quantity:
    Price:
    $216.95
    Subtotal:
  • ANDREWS 4-Speed Mainshaft 258080

    ANDREWS 4-Speed Mainshaft 258080

    ANDREWS

    $341.95
    Sold individually, unless noted.
    DS199402
    SKU:
    DS199402
    Availability:
    Ships Same Business Day
    Weight:
    1.60 LBS
    PRODUCT NAME:
    MAINSHAFT
    RIDING STYLE:
    STREET
    STYLE:
    4-SPEED
    TYPE:
    TRANSMISSION
    UNITS:
    EACH
    $341.95
    Qty in Cart: 0
    Quantity:
    Price:
    $341.95
    Subtotal:
  • ANDREWS 4-Speed Mainshaft 258120

    ANDREWS 4-Speed Mainshaft 258120

    ANDREWS

    $263.95
    Sold individually, unless noted.
    DS199403
    SKU:
    DS199403
    Availability:
    Ships Same Business Day
    Weight:
    1.69 LBS
    STYLE:
    4-SPEED
    UNITS:
    EACH
    PRODUCT NAME:
    MAINSHAFT
    RIDING STYLE:
    STREET
    TYPE:
    TRANSMISSION
    $263.95
    Qty in Cart: 0
    Quantity:
    Price:
    $263.95
    Subtotal:
  • ANDREWS 3rd Gear Set - Close Ratio 203375

    ANDREWS 3rd Gear Set - Close Ratio 203375

    ANDREWS

    $331.95
    Sold individually, unless noted.
    DS199404
    SKU:
    DS199404
    Availability:
    Ships Same Business Day
    Weight:
    3.05 LBS
    PRODUCT NAME:
    GEAR SET
    RIDING STYLE:
    STREET
    STYLE:
    CLOSE RATIO
    THIRD GEAR RATIO:
    1.35:1
    UNITS:
    SET
    TYPE:
    THIRD GEAR
    $331.95
    Qty in Cart: 0
    Quantity:
    Price:
    $331.95
    Subtotal:
  • ANDREWS 1st Gear - Close Ratio 201105

    ANDREWS 1st Gear - Close Ratio 201105

    ANDREWS

    $175.95
    Sold individually, unless noted.
    DS199406
    SKU:
    DS199406
    Availability:
    Ships Same Business Day
    Weight:
    2.55 LBS
    PRODUCT NAME:
    GEAR SET
    FIRST GEAR RATIO:
    2.44:1
    RIDING STYLE:
    STREET
    TYPE:
    FIRST GEAR
    UNITS:
    SET
    $175.95
    Qty in Cart: 0
    Quantity:
    Price:
    $175.95
    Subtotal:
  • ANDREWS 5-Speed Gear Set - 3.24:1 First Ratio 296093

    ANDREWS 5-Speed Gear Set - 3.24:1 First Ratio 296093

    ANDREWS

    $1,428.95
    Gears are made from high-nickel alloy steel that is heat-treated and shot-peened for maximum durability and strength, Set includes gears, mainshaft and countershaft, Made in the U.S.A.
    DS194508
    SKU:
    DS194508
    Availability:
    Ships Same Business Day
    Weight:
    15.00 LBS
    TYPE:
    TRANSMISSION
    FIRST GEAR RATIO:
    3,24:1
    UNITS:
    SET
    PRODUCT NAME:
    GEAR SET
    RIDING STYLE:
    STREET
    STYLE:
    STANDARD RATIO
    $1,428.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,428.95
    Subtotal:
  • ANDREWS 4-Speed Gear Set - Stock Ratio 210450

    ANDREWS 4-Speed Gear Set - Stock Ratio 210450

    ANDREWS

    $989.95
    Gears are made from high-nickel alloy steel, heat-treated and shot-peened to give maximum durability and strength, Made in the U.S.A.
    DS194500
    SKU:
    DS194500
    Availability:
    Ships Same Business Day
    Weight:
    9.55 LBS
    UNITS:
    SET
    THIRD GEAR RATIO:
    1.23:1
    TYPE:
    TRANSMISSION
    STYLE:
    STANDARD RATIO
    FIRST GEAR RATIO:
    2.60:1
    PRODUCT NAME:
    GEAR SET
    RIDING STYLE:
    STREET
    $989.95
    Qty in Cart: 0
    Quantity:
    Price:
    $989.95
    Subtotal:
  • ANDREWS Countershaft - 2nd Gear 202160

    ANDREWS Countershaft - 2nd Gear 202160

    ANDREWS

    $89.95
    Sold individually, unless noted.
    DS199410
    SKU:
    DS199410
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    COUNTERSHAFT
    TOOTH COUNT:
    21
    TYPE:
    SECOND GEAR
    STYLE:
    STANDARD RATIO
    SECOND GEAR RATIO:
    1.82:1
    UNITS:
    EACH
    $89.95
    Qty in Cart: 0
    Quantity:
    Price:
    $89.95
    Subtotal:
  • ANDREWS 4-Speed Countershaft 207650

    ANDREWS 4-Speed Countershaft 207650

    ANDREWS

    $54.95
    Sold individually, unless noted.
    DS199413
    SKU:
    DS199413
    Availability:
    Ships Same Business Day
    Weight:
    0.81 LBS
    UNITS:
    EACH
    PRODUCT NAME:
    COUNTERSHAFT
    RIDING STYLE:
    STREET
    STYLE:
    4-SPEED
    TYPE:
    TRANSMISSION
    $54.95
    Qty in Cart: 0
    Quantity:
    Price:
    $54.95
    Subtotal:
  • ALLOY ART Combi Stabilizer - Black DC-1

    ALLOY ART Combi Stabilizer - Black DC-1

    ALLOY ART

    $355.95
    Kits feature CNC-machined aluminum link arms with stainless steel Heim joints and hardware, Feature a long link arm with the most leverage available that provides maximum stabilization, Increase frame stiffness for better cornering and in panic...
    11110014
    SKU:
    11110014
    Availability:
    Ships Same Business Day
    Weight:
    2.45 LBS
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    TYPE:
    BOLT-ON
    COLOR/FINISH:
    BLACK ANODIZED
    UNITS:
    KIT
    PRODUCT NAME:
    STABILIZER KIT
    $355.95
    Qty in Cart: 0
    Quantity:
    Price:
    $355.95
    Subtotal:
  • ALLOY ART Combi Stabilizer - Polished DC-2 ALLOY ART Combi Stabilizer - Polished DC-2

    ALLOY ART Combi Stabilizer - Polished DC-2

    ALLOY ART

    $335.95
    Kits feature CNC-machined aluminum link arms with stainless steel Heim joints and hardware, Feature a long link arm with the most leverage available that provides maximum stabilization, Increase frame stiffness for better cornering and in panic...
    11110015
    SKU:
    11110015
    Availability:
    Ships Same Business Day
    Weight:
    2.10 LBS
    COLOR/FINISH:
    POLISHED
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    STABILIZER KIT
    TYPE:
    BOLT-ON
    UNITS:
    KIT
    $335.95
    Qty in Cart: 0
    Quantity:
    Price:
    $335.95
    Subtotal:
  • ALLOY ART Cush Drive Sprocket - Gold - 51 Tooth G2CC51-32

    ALLOY ART Cush Drive Sprocket - Gold - 51 Tooth G2CC51-32

    ALLOY ART

    $759.95
    CNC-machined aluminum carrier, 1026 medium-to-high carbon steel CNC-machined sprocket, Includes stainless steel lock spring, two bearing and bearing spacer, Use with a .750" offset front sprocket (sold separately), Made in the U.S.A.
    12102506
    SKU:
    12102506
    Availability:
    Ships Same Business Day
    Weight:
    7.05 LBS
    COLOR/FINISH:
    GOLD
    UNITS:
    EACH
    PRODUCT NAME:
    SPROCKET
    TOOTH COUNT:
    51
    TYPE:
    CUSH DRIVE
    COLOR/FINISH:
    MACHINED
    RIDING STYLE:
    STREET
    $759.95
    Qty in Cart: 0
    Quantity:
    Price:
    $759.95
    Subtotal:
  • ALLOY ART TXR Stabilizer TXR-3

    ALLOY ART TXR Stabilizer TXR-3

    ALLOY ART

    $347.95
    CNC-machined from 6061 T-6 aluminum, Improve handling by triangulating motor and transmission in the chassis to eliminate frame wobble at high speeds and while cornering, Adjustable intermediate member with integrated patented Gooden-Tite polyurethane...
    11110007
    SKU:
    11110007
    Availability:
    Ships Same Business Day
    Weight:
    3.40 LBS
    PRODUCT NAME:
    STABILIZER KIT
    UNITS:
    EACH
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    BLACK ANODIZED
    MATERIAL:
    6061 ALUMINUM
    TYPE:
    BOLT-ON
    $347.95
    Qty in Cart: 0
    Quantity:
    Price:
    $347.95
    Subtotal:
  • ALLOY ART Stabilizer - Black 09TS-2

    ALLOY ART Stabilizer - Black 09TS-2

    ALLOY ART

    $149.95
    CNC-machined aluminum, stainless steel Heim joints and stainless mounting hardware, Prevent frame flex, frame wobble and motor oscillation, Improve handling and overall safety, Top-side design provides for a quicker, easier installation, Work with stock...
    11110012
    SKU:
    11110012
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    TOURING FRAME
    TYPE:
    STABILIZER
    COLOR/FINISH:
    BLACK
    UNITS:
    EACH
    $149.95
    Qty in Cart: 0
    Quantity:
    Price:
    $149.95
    Subtotal:
  • ALLOY ART Frame Stabilizer - Black M8TS-2

    ALLOY ART Frame Stabilizer - Black M8TS-2

    ALLOY ART

    $169.95
    CNC-machined aluminum, stainless steel heim joints and stainless mounting hardware, Prevents frame flex, frame wobble and motor oscillation, Improves handling and overall safety, Top-side design provides for a quicker, easier installation, Works with...
    11110017
    SKU:
    11110017
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    COLOR/FINISH:
    BLACK
    UNITS:
    KIT
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    TOURING FRAME
    RIDING STYLE:
    STREET
    TYPE:
    STABILIZER
    $169.95
    Qty in Cart: 0
    Quantity:
    Price:
    $169.95
    Subtotal:
  • ALLOY ART Cush Drive Sprocket - 51 Tooth G2CC51-31

    ALLOY ART Cush Drive Sprocket - 51 Tooth G2CC51-31

    ALLOY ART

    $759.95
    CNC-machined aluminum carrier, 1026 medium-to-high carbon steel CNC-machined sprocket, Includes stainless steel lock spring, two bearing and bearing spacer, Use with a .750" offset front sprocket (sold separately), Made in the U.S.A.
    12102505
    SKU:
    12102505
    Availability:
    Ships Same Business Day
    Weight:
    6.80 LBS
    COLOR/FINISH:
    BLACK
    TYPE:
    CUSH DRIVE
    COLOR/FINISH:
    MACHINED
    UNITS:
    EACH
    PRODUCT NAME:
    SPROCKET
    RIDING STYLE:
    STREET
    TOOTH COUNT:
    51
    $759.95
    Qty in Cart: 0
    Quantity:
    Price:
    $759.95
    Subtotal:
  • ALLOY ART Cush Drive Sprocket - Black - 53 Tooth G2CC53-31

    ALLOY ART Cush Drive Sprocket - Black - 53 Tooth G2CC53-31

    ALLOY ART

    $759.95
    CNC-machined aluminum carrier, 1026 medium-to-high carbon steel CNC-machined sprocket, Includes stainless steel lock spring, two bearing and bearing spacer, Use with a .750" offset front sprocket (sold separately), Made in the U.S.A.
    12102507
    SKU:
    12102507
    Availability:
    Ships Same Business Day
    Weight:
    8.10 LBS
    PRODUCT NAME:
    SPROCKET
    RIDING STYLE:
    STREET
    TYPE:
    CUSH DRIVE
    TOOTH COUNT:
    53
    UNITS:
    EACH
    COLOR/FINISH:
    BLACK
    COLOR/FINISH:
    MACHINED
    $759.95
    Qty in Cart: 0
    Quantity:
    Price:
    $759.95
    Subtotal:
  • ALLOY ART Cush Drive Sprocket - Gold - 53 Tooth G2CC53-32

    ALLOY ART Cush Drive Sprocket - Gold - 53 Tooth G2CC53-32

    ALLOY ART

    $759.95
    CNC-machined aluminum carrier, 1026 medium-to-high carbon steel CNC-machined sprocket, Includes stainless steel lock spring, two bearing and bearing spacer, Use with a .750" offset front sprocket (sold separately), Made in the U.S.A.
    12102508
    SKU:
    12102508
    Availability:
    Ships Same Business Day
    Weight:
    7.65 LBS
    COLOR/FINISH:
    GOLD
    UNITS:
    EACH
    TOOTH COUNT:
    53
    PRODUCT NAME:
    SPROCKET
    TYPE:
    CUSH DRIVE
    COLOR/FINISH:
    MACHINED
    RIDING STYLE:
    STREET
    $759.95
    Qty in Cart: 0
    Quantity:
    Price:
    $759.95
    Subtotal:
  • ALLOY ART Cush Drive Sprocket - Black - 51 Tooth G2CC51-11

    ALLOY ART Cush Drive Sprocket - Black - 51 Tooth G2CC51-11

    ALLOY ART

    $799.95
    CNC-machined aluminum carrier, 1026 medium-to-high carbon steel CNC-machined sprocket, Includes stainless steel lock spring, two bearing and bearing spacer, Use with a .750" offset front sprocket (sold separately), Made in the U.S.A.
    12102509
    SKU:
    12102509
    Availability:
    Ships Same Business Day
    Weight:
    6.95 LBS
    PRODUCT NAME:
    SPROCKET
    TOOTH COUNT:
    51
    TYPE:
    CUSH DRIVE
    COLOR/FINISH:
    BLACK ANODIZED
    COLOR/FINISH:
    BLACK
    UNITS:
    EACH
    RIDING STYLE:
    STREET
    $799.95
    Qty in Cart: 0
    Quantity:
    Price:
    $799.95
    Subtotal:
  • ALLOY ART Cush Drive Sprocket - Black - 51 Tooth G2CC51-12

    ALLOY ART Cush Drive Sprocket - Black - 51 Tooth G2CC51-12

    ALLOY ART

    $799.95
    CNC-machined aluminum carrier, 1026 medium-to-high carbon steel CNC-machined sprocket, Includes stainless steel lock spring, two bearing and bearing spacer, Use with a .750" offset front sprocket (sold separately), Made in the U.S.A.
    12102510
    SKU:
    12102510
    Availability:
    Ships Same Business Day
    Weight:
    4.50 LBS
    COLOR/FINISH:
    GOLD
    TYPE:
    CUSH DRIVE
    COLOR/FINISH:
    BLACK ANODIZED
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    SPROCKET
    TOOTH COUNT:
    51
    UNITS:
    EACH
    $799.95
    Qty in Cart: 0
    Quantity:
    Price:
    $799.95
    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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