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 Main Drive Gear A-10991
EASTERN MOTORCYCLE PARTS
$9.40The main drive gear is the critical component that transfers engine power directly to your motorcycle's transmission, making it essential for reliable operation and consistent performance. A worn or damaged drive gear will compromise power delivery,...11060082- SKU:
- 11060082
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- RETAINING RING
- TRANSMISSION TYPE:
- 6 SPEED
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
- STYLE:
- OEM REPLACEMENT
- UNITS:
- 10 PACK
$9.40 -
EASTERN MOTORCYCLE PARTS Sprocket Shaft Nut - 35211-91 A-35211-91
EASTERN MOTORCYCLE PARTS
$20.95A worn or damaged sprocket shaft nut compromises your drivetrain's structural integrity and can lead to catastrophic failure during operation. This OEM-specification replacement ensures proper fastening of your sprocket assembly, maintaining critical...11060083- SKU:
- 11060083
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- SPROCKET
- RIDING STYLE:
- STREET
- STYLE:
- OEM REPLACEMENT
- PRODUCT NAME:
- NUT
- UNITS:
- EACH
$20.95 -
EASTERN MOTORCYCLE PARTS Shifter Shaft - 34628-54A A-34628-54A
EASTERN MOTORCYCLE PARTS
$39.95A worn or damaged shifter shaft compromises your bike's ability to find gears reliably—something you can't afford mid-ride or on the track. This OEM-equivalent shifter shaft restores precise engagement and smooth gear transitions with the included ball...11060086- SKU:
- 11060086
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- STYLE:
- OEM REPLACEMENT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- SHIFT LEVER SHAFT
$39.95 -
EASTERN MOTORCYCLE PARTS Shifter Shaft Spring A-34087-79A
EASTERN MOTORCYCLE PARTS
$16.10A worn or damaged shifter shaft spring compromises your bike's shifting precision and can lead to missed gears or sloppy engagement—exactly what you don't want in demanding riding conditions. This OEM replacement spring restores factory-spec performance...11060048- SKU:
- 11060048
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- SHIFTER SHAFT
- RIDING STYLE:
- STREET
- STYLE:
- OEM REPLACEMENT
- PRODUCT NAME:
- SPRING
- UNITS:
- 5 PACK
$16.10 -
EASTERN MOTORCYCLE PARTS Shifter Lever Spring - 34083-79 A-34083-79
EASTERN MOTORCYCLE PARTS
$17.50A worn or damaged shifter lever spring compromises your bike's shifting precision and can lead to missed gears or sluggish engagement when you need reliability most. This OEM-spec replacement restores factory performance and tactile feedback, ensuring...11060049- SKU:
- 11060049
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- PRODUCT NAME:
- SPRING
- TYPE:
- PAWL SPRING
- STYLE:
- OEM REPLACEMENT
$17.50 -
EASTERN MOTORCYCLE PARTS Shifter Lever Spring - 34977-00A A-34977-00A
EASTERN MOTORCYCLE PARTS
$8.10A worn or damaged shifter lever spring compromises your bike's shifting precision and can lead to missed gears under load. This OEM replacement spring restores positive engagement and reliable shift feel, whether you're navigating tight technical terrain...11060050- SKU:
- 11060050
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- STYLE:
- OEM REPLACEMENT
- UNITS:
- 10 PACK
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- STREET
- TYPE:
- PAWL SPRING
$8.10 -
EASTERN MOTORCYCLE PARTS Mainshaft Bearing A-35030-89
EASTERN MOTORCYCLE PARTS
$31.95The mainshaft bearing is the critical pivot point that enables smooth, reliable power delivery through your 5-speed transmission. A worn or damaged bearing introduces play, noise, and premature wear that cascades through the entire drivetrain—costing you...11060182- SKU:
- 11060182
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
- STYLE:
- TRAP DOOR
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
$31.95 -
EASTERN MOTORCYCLE PARTS Spacer Countershaft - 2nd Gear 44-0512
EASTERN MOTORCYCLE PARTS
$5.00A worn or damaged countershaft spacer directly impacts gear engagement and transmission reliability—especially under high-load conditions where precision tolerances are critical. The EASTERN MOTORCYCLE PARTS Spacer Countershaft (2nd Gear) is engineered...11060187- SKU:
- 11060187
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- SPACER
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- TYPE:
- SECOND GEAR
$5.00 -
On Sale
EASTERN MOTORCYCLE PARTS Main Drive Bearing - 8956 44-0516
EASTERN MOTORCYCLE PARTS
MSRP: $73.95Now: $47.00Was: $73.95A worn or failing main drive bearing will compromise your entire drivetrain, leading to increased friction, vibration, and catastrophic engine damage if left unchecked. The Eastern Motorcycle Parts 8956 44-0516 is a precision-manufactured replacement...11060188- SKU:
- 11060188
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING
- TRANSMISSION TYPE:
- 5 SPEED
- UNITS:
- EACH
MSRP: $73.95Now: $47.00Was: $73.95 -
EASTERN MOTORCYCLE PARTS Countershaft Gear - 35717-74 W-14-174
EASTERN MOTORCYCLE PARTS
$72.95A countershaft gear is critical to your motorcycle's transmission reliability and shift quality. Worn or damaged countershaft gears lead to poor engagement, grinding, and accelerated wear on mating components. This OEM-equivalent replacement from Eastern...11060190- SKU:
- 11060190
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- TOOTH COUNT:
- 24
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GEAR
- TYPE:
- COUNTERSHAFT
- TYPE:
- FIRST GEAR
- TRANSMISSION TYPE:
- 4 SPEED
$72.95 -
EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacers - 0.030" A-35852-84
EASTERN MOTORCYCLE PARTS
$6.70Improper sprocket alignment introduces premature wear, vibration, and potential catastrophic drivetrain failure. These precision spacers deliver the exact 0.030" offset required for proper front motor sprocket and belt drive pulley positioning, ensuring...DS196153- SKU:
- DS196153
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- SPROCKET
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
$6.70 -
EASTERN MOTORCYCLE PARTS Countershaft Bushing - Clutch Side A-36048-36
EASTERN MOTORCYCLE PARTS
$28.95A worn countershaft bushing compromises clutch engagement precision and accelerates drivetrain wear—replacing it restores smooth power transfer and extends transmission life. This OEM-spec Eastern Motorcycle Parts bushing ensures proper shaft alignment...DS196171- SKU:
- DS196171
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH SIDE
- UNITS:
- EACH
$28.95 -
EASTERN MOTORCYCLE PARTS Countershaft Bushing - Clutch Side A-36048-76A
EASTERN MOTORCYCLE PARTS
$28.95A worn countershaft bushing compromises clutch engagement precision and accelerates drivetrain wear—replacing it restores smooth shifts and extends the life of your transmission. This Eastern Motorcycle Parts OEM-specification bushing is engineered to...DS196172- SKU:
- DS196172
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH SIDE
- UNITS:
- EACH
- PRODUCT NAME:
- BUSHING
$28.95 -
EASTERN MOTORCYCLE PARTS Countershaft Bushing - Starter Side A-36046-36
EASTERN MOTORCYCLE PARTS
$28.95The countershaft bushing is a critical wear component that directly impacts shift quality and drivetrain longevity. Over time, bushing degradation causes excessive play in your countershaft, leading to notchy shifts, increased noise, and potential...DS196173- SKU:
- DS196173
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- STARTER SIDE
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$28.95 -
EASTERN MOTORCYCLE PARTS Countershaft Bushing - Starter Side A-36045-76
EASTERN MOTORCYCLE PARTS
$28.95A worn countershaft bushing compromises shift quality and accelerates drivetrain wear—this OEM Eastern component restores precise tolerances and smooth engagement. Whether you're rebuilding a 4-speed transmission or replacing a damaged bushing, this part...DS196174- SKU:
- DS196174
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- STARTER SIDE
$28.95Qty in Cart: 0Quantity:Price:$28.95Subtotal: -
EASTERN MOTORCYCLE PARTS Main Drive Gear - Spacer A-35070-77
EASTERN MOTORCYCLE PARTS
$41.95Proper gear spacing is critical to transmission reliability and performance—misalignment or wear in your main drive gear assembly compromises shift quality and accelerates component degradation. The Eastern Motorcycle Parts Main Drive Gear Spacer...DS196234- SKU:
- DS196234
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- EACH
- TYPE:
- MAIN DRIVE GEAR
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
$41.95 -
EASTERN MOTORCYCLE PARTS Main Drive Gear - Spacer A-35070-80
EASTERN MOTORCYCLE PARTS
$41.95Proper gear spacing is critical to maintaining optimal drivetrain geometry and preventing premature wear on your motorcycle's primary drive system. The Eastern Motorcycle Parts Main Drive Gear Spacer A-35070-80 ensures precise alignment and engagement,...DS196235- SKU:
- DS196235
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
- PRODUCT NAME:
- SPACER
- UNITS:
- EACH
$41.95 -
EASTERN MOTORCYCLE PARTS Main Drive Gear - Spacer A-35070-84
EASTERN MOTORCYCLE PARTS
$37.95Proper gear spacing is critical to transmission longevity and consistent power delivery in high-performance applications. The EASTERN MOTORCYCLE PARTS Main Drive Gear Spacer A-35070-84 ensures precise alignment and reduces wear on adjacent components,...DS196237- SKU:
- DS196237
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
- UNITS:
- EACH
$37.95 -
EASTERN MOTORCYCLE PARTS Main Drive Gear - Spacer A-35171-37
EASTERN MOTORCYCLE PARTS
$39.95The EASTERN MOTORCYCLE PARTS Main Drive Gear Spacer A-35171-37 is a precision-engineered component designed to maintain proper gear mesh alignment and spacing in your primary drive system. Correct spacing is critical for smooth power delivery, reduced...DS196238- SKU:
- DS196238
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
- UNITS:
- EACH
$39.95 -
EASTERN MOTORCYCLE PARTS Thrust Washer A-6003
EASTERN MOTORCYCLE PARTS
$8.10Thrust washers are critical wear components that prevent axial movement and protect bearing surfaces in high-stress applications. Over time, stock washers degrade from friction and impact, leading to play in your drivetrain and accelerated bearing wear...DS194280- SKU:
- DS194280
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- TRANSMISSION TYPE:
- 5 SPEED
- TYPE:
- COUNTERSHAFT
- PRODUCT NAME:
- THRUST WASHER
- TYPE:
- MAINSHAFT
$8.10
