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 Bearing Housing A-35100-36
EASTERN MOTORCYCLE PARTS
$57.95A quality bearing housing is critical to maintaining precise wheel alignment and reducing rotational resistance in high-performance applications. The Eastern Motorcycle Parts A-35100-36 delivers the durability and tolerances required for demanding riding...DS194282- SKU:
- DS194282
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- MAINSHAFT
- PRODUCT NAME:
- HOUSING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- BEARING
$57.95 -
EASTERN MOTORCYCLE PARTS Main Bearing Race A-35105-52
EASTERN MOTORCYCLE PARTS
$66.95Main bearing races are critical components that directly impact engine reliability and longevity—premature failure here can mean catastrophic engine damage. The Eastern Motorcycle Parts A-35105-52 is engineered to OEM specifications, ensuring proper load...DS195018- SKU:
- DS195018
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- BEARING RACE
- TYPE:
- MAIN
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$66.95 -
EASTERN MOTORCYCLE PARTS Countershaft Bushing - 1st and 2nd Gear A-35791-36
EASTERN MOTORCYCLE PARTS
$33.95A worn or damaged countershaft bushing compromises gear engagement and accelerates drivetrain wear—potentially leaving you stranded mid-race or ride. The EASTERN MOTORCYCLE PARTS Countershaft Bushing restores precise shaft alignment and smooth power...DS194132- SKU:
- DS194132
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- TYPE:
- FIRST GEAR
- UNITS:
- EACH
- MATERIAL:
- BRONZE
- PRODUCT NAME:
- COUNTERSHAFT BUSHING
- TYPE:
- SECOND GEAR
$33.95 -
EASTERN MOTORCYCLE PARTS Countershaft Bushing - 1st and Reverse Gear A-35789-36
EASTERN MOTORCYCLE PARTS
$33.95Precise gear engagement depends on worn components being replaced before they compromise your entire transmission system. This countershaft bushing maintains critical clearances between 1st and reverse gears, preventing grinding, slippage, and...DS194135- SKU:
- DS194135
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- BRONZE
- TYPE:
- REVERSE
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- FIRST GEAR
- UNITS:
- EACH
$33.95 -
EASTERN MOTORCYCLE PARTS Shifter Fork Shaft A-34140-36
EASTERN MOTORCYCLE PARTS
$35.95A worn or bent shifter fork shaft directly impacts shift precision and speed—critical factors whether you're racing or enjoying spirited riding. This EASTERN MOTORCYCLE PARTS unit restores crisp, reliable gear engagement, eliminating the sluggish or...DS194214- SKU:
- DS194214
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- SHIFT FORK SHAFT
- TRANSMISSION TYPE:
- 4 SPEED
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$35.95 -
DRAG SPECIALTIES Mainshaft Sprocket Nut 33-0303-SC1
DRAG SPECIALTIES
$19.52A worn or damaged mainshaft sprocket nut compromises the critical connection between your sprocket and drive gear—risking slippage, misalignment, and catastrophic drivetrain failure. This OEM-equivalent replacement from Drag Specialties ensures a secure,...DS194079- SKU:
- DS194079
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- NUT
- TYPE:
- MAINSHAFT SPROCKET
- UNITS:
- EACH
$19.52 -
DRAG SPECIALTIES Transmission Bearing 6305-2RS
DRAG SPECIALTIES
$14.68Transmission bearings are critical load-bearing components that directly impact your vehicle's power delivery, shift quality, and overall drivetrain reliability. A worn or failing bearing introduces play, noise, and potential catastrophic damage to your...11060011- SKU:
- 11060011
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- BALL BEARING
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
$14.68 -
DRAG SPECIALTIES Transmission Bearing 6207-2RS
DRAG SPECIALTIES
$34.59Transmission bearing failure can bring your build to a halt mid-season—or worse, mid-race. The DRAG SPECIALTIES 6207-2RS is engineered to withstand the shock loads and sustained RPM of high-performance applications, delivering reliable support for...11060010- SKU:
- 11060010
- Availability:
- Ships Same Business Day
- Weight:
- 1.07 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- MAINSHAFT
- PRODUCT NAME:
- BALL BEARING
$34.59 -
On Sale
S&S CYCLE Transmission Countershaft Bearing 56-3031
S&S CYCLE
MSRP: $50.95Now: $45.86Was: $50.95Transmission countershaft bearings endure extreme rotational forces and wear faster than most internal drivetrain components—a failed bearing can leave you stranded or cause catastrophic internal damage. The S&S Cycle 56-3031 is a precision replacement...11060207- SKU:
- 11060207
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
- TYPE:
- COUNTERSHAFT
- TYPE:
- TRANSMISSION
MSRP: $50.95Now: $45.86Was: $50.95 -
ANDREWS Mainshaft - 4th Gear 299104
ANDREWS
$129.95A worn or damaged 4th gear mainshaft can compromise your transmission's reliability and shift consistency, especially under sustained high-load conditions. The ANDREWS 299104 is engineered for precision fitment and durability, ensuring smooth power...11060063- SKU:
- 11060063
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- PRODUCT NAME:
- GEAR
- TOOTH COUNT:
- 30
- STYLE:
- STANDARD RATIO
- TYPE:
- FOURTH GEAR
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$129.95Qty in Cart: 0Quantity:Price:$129.95Subtotal: -
COLONY Transmission Stud - 1/2-13 x 3/8-24 9655-4
COLONY
$24.95Transmission studs are critical fastening points that endure extreme clamping loads and thermal cycling. The COLONY 1/2-13 x 3/8-24 transmission stud delivers the strength and reliability you need to keep your transmission secured under hard acceleration...DS189935- SKU:
- DS189935
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- DIAMETER - THREAD SIZE:
- 1/2-13
- PRODUCT NAME:
- TRANSMISSION BOTTOM STUD
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- DIAMETER - THREAD SIZE:
- 3/8-24
- STYLE:
- OVERSIZE
- STYLE:
- REPLACEMENT
- TYPE:
- TRANSMISSION
$24.95 -
ANDREWS 4-Speed Mainshaft 258190
ANDREWS
$263.95If you're rebuilding a 4-speed transmission, the mainshaft is the critical component that directly impacts power delivery and shift quality. The Andrews 258190 mainshaft is engineered for reliable engagement and smooth operation under demanding racing...DS199449- SKU:
- DS199449
- Availability:
- Ships Same Business Day
- Weight:
- 1.69 LBS
- STYLE:
- 4-SPEED
- TYPE:
- TRANSMISSION
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- MAINSHAFT
- UNITS:
- EACH
$263.95Qty in Cart: 0Quantity:Price:$263.95Subtotal: -
ANDREWS Stock Ratio Clutch Gear 254730
ANDREWS
$299.95The ANDREWS Stock Ratio Clutch Gear delivers reliable engagement and smooth power delivery for stock and lightly modified engines. This precision-engineered component maintains OEM specifications while ensuring consistent clutch performance under daily...DS199438- SKU:
- DS199438
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- PRODUCT NAME:
- GEAR CLUTCH
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- STYLE:
- STANDARD RATIO
- TYPE:
- STOCK RATIO
$299.95Qty in Cart: 0Quantity:Price:$299.95Subtotal: -
ANDREWS Countershaft - Main Drive Gear 255580
ANDREWS
$130.95The ANDREWS Countershaft - Main Drive Gear 255580 is essential for maintaining reliable power transfer in high-rpm applications. A worn or damaged countershaft gear directly compromises acceleration response and overall drivetrain efficiency. OEM...DS199439- SKU:
- DS199439
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- PRODUCT NAME:
- COUNTERSHAFT
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD RATIO
- TOOTH COUNT:
- 27
- TYPE:
- MAIN DRIVE GEAR
- UNITS:
- EACH
$130.95 -
ANDREWS 5-Speed Gear Set - 2.94:1 First Ratio 296081
ANDREWS
$1,414.95A 5-speed transmission demands gear components that can handle sustained high-RPM shifts without compromise. The ANDREWS 296081 gear set delivers the durability and precision required for competitive racing or demanding street applications, with a 2.94:1...11060058- SKU:
- 11060058
- Availability:
- Ships Same Business Day
- Weight:
- 14.45 LBS
- FIRST GEAR RATIO:
- 2.94:1
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- GEAR SET
- RIDING STYLE:
- STREET
- STYLE:
- CLOSE RATIO
- UNITS:
- SET
$1,414.95Qty in Cart: 0Quantity:Price:$1,414.95Subtotal: -
EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacers - 0.120" A-24034-70
EASTERN MOTORCYCLE PARTS
$13.50Improper sprocket and pulley alignment is one of the leading causes of premature wear, vibration, and power loss in high-performance drivetrain systems. This spacer kit ensures your front motor sprocket or belt drive pulley sits at the exact...DS196138- SKU:
- DS196138
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- SPROCKET
- UNITS:
- 5 PACK
$13.50 -
Jims Transmission Sprocket Spacer for Harley FLH Electra Glide 1980-1983 33334-79
JIMS
$53.25A worn or improperly spaced transmission sprocket can accelerate seal degradation and compromise drivetrain reliability—especially on classic Harley FLH models that demand precision engineering. The JIMS Transmission Sprocket Spacer 33334-79 maintains...DS197052- SKU:
- DS197052
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- LENGTH:
- 0.687'
- PRODUCT NAME:
- TRANSMISSION SPROCKET SPACER
- TRANSMISSION TYPE:
- 5 SPEED
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$53.25 -
Jims Shifter Shaft Bushings 1977-2003 Harley-Davidson XLH XLCH XLCR XLX 40520-63
JIMS
$31.55Worn shifter shaft bushings cause sloppy, imprecise gear changes that compromise both control and reliability on the road or track. JIMS Shifter Shaft Bushings restore the tight tolerances your transmission needs, delivering crisp, responsive shifts with...DS194253- SKU:
- DS194253
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- SHIFTER SHAFT
- UNITS:
- PAIR
$31.55Qty in Cart: 0Quantity:Price:$31.55Subtotal: -
EASTERN MOTORCYCLE PARTS 4-Speed Shifter Cam A-34040-52
EASTERN MOTORCYCLE PARTS
$4.00A worn or damaged shifter cam directly compromises shift quality and can lead to missed gears or grinding transmission damage. The Eastern Motorcycle Parts 4-Speed Shifter Cam A-34040-52 restores precise shift indexing and smooth engagement across all...11060018- SKU:
- 11060018
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- RETAINING RING
- TYPE:
- SHIFTER CAM
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- STYLE:
- OEM REPLACEMENT
- TRANSMISSION TYPE:
- 4 SPEED
$4.00Qty in Cart: 0Quantity:Price:$4.00Subtotal: -
Jims Shift Fork Shaft for Harley-Davidson Big Twin 1936-1986 34186-76
JIMS
$46.80A worn or damaged shift fork shaft compromises your transmission's ability to engage gears precisely, leading to grinding shifts and accelerated internal wear. The JIMS Shift Fork Shaft 34186-76 restores crisp, reliable shift engagement with OEM-quality...DS194251- SKU:
- DS194251
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- TRANSMISSION TYPE:
- 4 SPEED
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIFT FORK SHAFT KIT
- UNITS:
- KIT
$46.80
