Harley Transmission Internal Components
Harley Bike Transmission Internal Components at JJ Motorsports
Rebuild your Harley's transmission with premium internal components from JJ Motorsports, featuring high-strength countershafts, sealed bearings, and detent springs for smoother shifting and long-lasting durability on Big Twin, Evo, and Twin Cam models. These precision parts ensure reliable gear engagement and reduced noise.
Shop Andrews, JIMS, and Eastern Motorcycle Parts transmission internals for OEM-quality performance. Explore related categories such as Harley drivetrain for clutches and chains, or Harley for exhaust and cams to complete your rebuild.
Top Harley Transmission Internal Components
- Andrews Countershaft 296700 – High-strength countershaft for 5-speed transmissions; heat-treated for smooth shifting on Evo Big Twins.
- JIMS Bearing 8998K – Sealed mainshaft bearing; precision fit for reduced vibration in Twin Cam models.
- Eastern Motorcycle Parts Detent Spring A-34483-02 – OEM-spec detent spring for shift forks; restores crisp gear selection on Sportster and Dyna.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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EASTERN MOTORCYCLE PARTS Shifter Fork Shims - 0.015" A-6752
EASTERN MOTORCYCLE PARTS
$5.30Made in the U.S.A.11060022- SKU:
- 11060022
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- SHIM
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- TRANSMISSION TYPE:
- 4 SPEED
- TYPE:
- SHIFTER FORK
$5.30 -
EASTERN MOTORCYCLE PARTS Shifter Fork Thrust Washers A-6754
EASTERN MOTORCYCLE PARTS
$13.303/32" thick, Made in the U.S.A.11060026- SKU:
- 11060026
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TRANSMISSION TYPE:
- 4 SPEED
- TYPE:
- SHIFTER FORK
- PRODUCT NAME:
- THRUST WASHER
- RIDING STYLE:
- STREET
$13.30 -
EASTERN MOTORCYCLE PARTS Access Door A-35087-99A
EASTERN MOTORCYCLE PARTS
$16.00High-quality OEM replacement components11060029- SKU:
- 11060029
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- TYPE:
- TRAP DOOR
- PRODUCT NAME:
- RETAINING RING
- STYLE:
- OEM REPLACEMENT
$16.00 -
EASTERN MOTORCYCLE PARTS Mainshaft - Ball Bearing - Clutch Side A-8978
EASTERN MOTORCYCLE PARTS
$35.95Mainshaft component for 5-speed11060034- SKU:
- 11060034
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- PRODUCT NAME:
- BALL BEARING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- STYLE:
- CLUTCH SIDE
- TYPE:
- MAINSHAFT
$35.95 -
EASTERN MOTORCYCLE PARTS Shifter Cam Thrust Washers A-33212-SET
EASTERN MOTORCYCLE PARTS
$22.95Made in the U.S.A.11060035- SKU:
- 11060035
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- THRUST WASHER
- TYPE:
- SHIFTER CAM
- RIDING STYLE:
- STREET
- UNITS:
- SET
$22.95 -
EASTERN MOTORCYCLE PARTS Bearing Housing Retaining Plate A-35111-36
EASTERN MOTORCYCLE PARTS
$20.95Made in the U.S.A.11060043- SKU:
- 11060043
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- BEARING HOUSING
- PRODUCT NAME:
- RETAINING PLATE
$20.95 -
EASTERN MOTORCYCLE PARTS Retainer With Oil Seal A-35150-52
EASTERN MOTORCYCLE PARTS
$8.95Made in the U.S.A.11060044- SKU:
- 11060044
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- FEATURES:
- INCLUDES SEAL
- PRODUCT NAME:
- RETAINER
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
$8.95 -
EASTERN MOTORCYCLE PARTS Roller Bearing A-9095-23
EASTERN MOTORCYCLE PARTS
$22.95Made in the U.S.A.11060045- SKU:
- 11060045
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- ROLLER BEARING
- UNITS:
- 23 PACK
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
$22.95 -
EASTERN MOTORCYCLE PARTS Detent Spring A-34483-02
EASTERN MOTORCYCLE PARTS
$6.00Top-Quality OEM replacement component, Made in U.S.A.11060046- SKU:
- 11060046
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- STYLE:
- OEM REPLACEMENT
- TYPE:
- DETENT ARM SPRING
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPRING
$6.00 -
EASTERN MOTORCYCLE PARTS Detent Arm Spring A-33374-00
EASTERN MOTORCYCLE PARTS
$9.30Top-Quality OEM replacement component, Made in U.S.A.11060047- SKU:
- 11060047
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- STYLE:
- OEM REPLACEMENT
- TYPE:
- DETENT ARM SPRING
- UNITS:
- 10 PACK
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- STREET
$9.30 -
COLONY Transmission Stud - 3/8-16 x 3/8-24 9653-4
COLONY
$19.95Studs are heat-treated for strength and durability, Equal or surpass original equipment, Made in the U.S.A.DS189937- SKU:
- DS189937
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- STYLE:
- REPLACEMENT
- TYPE:
- TRANSMISSION
- DIAMETER - THREAD SIZE:
- 3/8-24
- PRODUCT NAME:
- TRANSMISSION BOTTOM STUD
- UNITS:
- 4 PACK
- DIAMETER - THREAD SIZE:
- 3/8-16
$19.95 -
COLONY Transmission Stud - 7/16-14 x 3/8-24 9654-4
COLONY
$20.95Studs are heat-treated for strength and durability, Equal or surpass original equipment, Made in the U.S.A.DS189936- SKU:
- DS189936
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- DIAMETER - THREAD SIZE:
- 3/8-24
- DIAMETER - THREAD SIZE:
- 7/16-14
- PRODUCT NAME:
- TRANSMISSION BOTTOM STUD
- STYLE:
- OVERSIZE
- STYLE:
- REPLACEMENT
- TYPE:
- TRANSMISSION
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
$20.95 -
Jims Shift Fork Shaft for Harley-Davidson 1987-2006 Big Twin 34088-87
JIMS
$30.95Enhance your motorcycle's performance with the JIMS Shift Fork Shaft 34088-87, expertly crafted in the U.S.A. This precision-engineered component ensures optimal shifting and durability, making it an essential upgrade for any serious rider. Trust in JIMS...DS194250- SKU:
- DS194250
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIFT FORK SHAFT
- TRANSMISSION TYPE:
- 5 SPEED
- TRANSMISSION TYPE:
- 6 SPEED
- UNITS:
- EACH
- MATERIAL:
- STEEL
$30.95 -
Jims Splined Clutch Mainshaft for 1991-2006 Harley-Davidson Big Twin 5-Speed 35042-91
JIMS
$466.95The JIMS Mainshaft Splined Clutch 35042-91 is engineered for high-performance applications, ensuring optimal power transfer and reliability for your motorcycle. Crafted with precision, this clutch component is designed to enhance your riding experience...DS199492- SKU:
- DS199492
- Availability:
- Ships Same Business Day
- Weight:
- 2.56 LBS
- PRODUCT NAME:
- MAINSHAFT
- TRANSMISSION TYPE:
- 5 SPEED
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$466.95 -
EASTERN MOTORCYCLE PARTS Bearing Spacer - 11599/A 40-0160
EASTERN MOTORCYCLE PARTS
$18.95Replacement spacer for output gear assembly in 6-speed transmissions11060075- SKU:
- 11060075
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
- MATERIAL:
- STEEL
- TRANSMISSION TYPE:
- 6 SPEED
- PRODUCT NAME:
- SPACER
- UNITS:
- EACH
$18.95 -
EASTERN MOTORCYCLE PARTS Bearing - 8042 40-0310
EASTERN MOTORCYCLE PARTS
$33.95High quality bearings for 6-speed transmissions11060076- SKU:
- 11060076
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
$33.95 -
EASTERN MOTORCYCLE PARTS Transmission Bearing - 8026 40-0315
EASTERN MOTORCYCLE PARTS
$45.95High quality bearings for 6-speed transmissions11060077- SKU:
- 11060077
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
- UNITS:
- 4 PACK
- TYPE:
- COUNTERSHAFT
$45.95 -
EASTERN MOTORCYCLE PARTS Bearing - 8963 40-0325
EASTERN MOTORCYCLE PARTS
$31.95High quality bearings for 6-speed transmissions11060078- SKU:
- 11060078
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- BEARING
- STYLE:
- LEFT SIDE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
$31.95 -
EASTERN MOTORCYCLE PARTS Mainshaft - Bearing 40-0345
EASTERN MOTORCYCLE PARTS
$10.95Mainshaft component for 5-speed11060079- SKU:
- 11060079
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- NEEDLE BEARING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
EASTERN MOTORCYCLE PARTS Main Drive Gear 42-0100
EASTERN MOTORCYCLE PARTS
$6.60High-quality OEM replacement components11060081- SKU:
- 11060081
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- RETAINING RING
- TRANSMISSION TYPE:
- 6 SPEED
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
- STYLE:
- OEM REPLACEMENT
- UNITS:
- 10 PACK
$6.60
