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
-
ANDREWS 1st Gear Set 299110
ANDREWS
$259.95A properly engineered first gear set is fundamental to consistent launch performance and reliable power transfer in high-RPM applications. The ANDREWS 1st Gear Set 299110 delivers the precision tolerances and material quality required for repeatability...11060064- SKU:
- 11060064
- Availability:
- Ships Same Business Day
- Weight:
- 2.03 LBS
- FIRST GEAR RATIO:
- 2.61:1
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- PRODUCT NAME:
- GEAR SET
- RIDING STYLE:
- STREET
- STYLE:
- CLOSE RATIO
- TYPE:
- FIRST GEAR
- UNITS:
- SET
$259.95 -
ANDREWS Transmission Gear - 5th Gear 299155
ANDREWS
$92.95A worn or damaged 5th gear compromises your transmission's reliability and performance across the entire powerband. The ANDREWS Transmission Gear 5th Gear 299155 is engineered to OEM specifications, delivering the precision fit and durability required...11060066- SKU:
- 11060066
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- STREET
- TYPE:
- FIFTH GEAR
- PRODUCT NAME:
- GEAR
- UNITS:
- EACH
- TRANSMISSION TYPE:
- 5 SPEED
$92.95Qty in Cart: 0Quantity:Price:$92.95Subtotal: -
ANDREWS 5-Speed Mainshaft 299180
ANDREWS
$267.95If you're building or rebuilding a transmission that demands reliability and precise gear engagement, the Andrews 5-Speed Mainshaft is engineered to deliver consistent performance lap after lap. This mainshaft is manufactured to exacting tolerances,...11060068- SKU:
- 11060068
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- RIDING STYLE:
- STREET
- STYLE:
- 5 SPEED
- UNITS:
- EACH
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- MAINSHAFT
$267.95 -
ANDREWS Pulley - 29 Tooth 290294
ANDREWS
$211.95The ANDREWS 29-tooth pulley delivers precise primary drive ratios for custom and performance-built engines requiring fine-tuned engagement characteristics. Machined from heat-treated, gear-quality steel, this American-made component ensures reliable...DS199479- SKU:
- DS199479
- Availability:
- Ships Same Business Day
- Weight:
- 4.88 LBS
- MATERIAL:
- STEEL
- TRANSMISSION TYPE:
- 5 SPEED
- TYPE:
- TRANSMISSION
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PULLEY
- MODEL:
- BETTER ACCELERATION
- TOOTH COUNT:
- 29
- UNITS:
- EACH
$211.95Qty in Cart: 0Quantity:Price:$211.95Subtotal: -
ANDREWS 1st Gear Set 296110
ANDREWS
$219.95A properly functioning first gear is critical for reliable launch control and smooth engagement in any high-performance transmission system. The ANDREWS 1st Gear Set 296110 delivers precision-machined durability to handle repeated acceleration cycles...DS199531- SKU:
- DS199531
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- STYLE:
- CLOSE RATIO
- TYPE:
- FIRST GEAR
- FIRST GEAR RATIO:
- 2.94:1
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- PRODUCT NAME:
- GEAR SET
- RIDING STYLE:
- STREET
- UNITS:
- SET
$219.95 -
ANDREWS Transmission Gear - 1st Gear 296120
ANDREWS
$116.95A worn or damaged first gear is the weak link in any high-performance transmission system, forcing you to compromise on acceleration and risking catastrophic drivetrain failure. The ANDREWS Transmission Gear 1st Gear (296120) delivers OEM-quality...11060059- SKU:
- 11060059
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- STYLE:
- STANDARD RATIO
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- FIRST GEAR
- TRANSMISSION TYPE:
- 5 SPEED
- PRODUCT NAME:
- GEAR
- TOOTH COUNT:
- 31
$116.95 -
ANDREWS Mainshaft - 1st Gear 296125
ANDREWS
$116.95A worn or damaged first gear on your mainshaft directly impacts acceleration response and overall powertrain reliability. The ANDREWS Mainshaft 1st Gear is precision-engineered to restore OEM performance standards while handling repeated high-load shifts...11060060- SKU:
- 11060060
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- FIRST GEAR RATIO:
- 3.24:1
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- STYLE:
- STANDARD RATIO
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 18
- TYPE:
- FIRST GEAR
- PRODUCT NAME:
- GEAR
$116.95Qty in Cart: 0Quantity:Price:$116.95Subtotal: -
ANDREWS 5-Speed Mainshaft 296800
ANDREWS
$331.95If you're rebuilding a transmission or upgrading to a higher-performance setup, the ANDREWS 5-Speed Mainshaft 296800 is engineered to handle increased torque and sustained RPM loads that stock components simply can't manage. This precision-manufactured...11060061- SKU:
- 11060061
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- TYPE:
- TRANSMISSION
- STYLE:
- CHAIN DRIVE
- STYLE:
- 5 SPEED
- PRODUCT NAME:
- MAINSHAFT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$331.95 -
ANDREWS Mainshaft - 3rd Gear 299103
ANDREWS
$129.95If you're experiencing worn gear engagement, slipping, or inconsistent power delivery through your transmission's mid-range, the ANDREWS Mainshaft 3rd Gear 299103 restores precise shifting and reliable torque transfer. This OEM-specification component...11060062- SKU:
- 11060062
- Availability:
- Ships Same Business Day
- Weight:
- 1.04 LBS
- PRODUCT NAME:
- GEAR
- TYPE:
- THIRD GEAR
- UNITS:
- EACH
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 28
- STYLE:
- STANDARD RATIO
$129.95Qty in Cart: 0Quantity:Price:$129.95Subtotal: -
ANDREWS 4th Gear Mainshaft 204280
ANDREWS
$210.95If you're building or rebuilding a high-performance transmission, the ANDREWS 4th Gear Mainshaft is a critical component that directly impacts power delivery and durability under load. This OEM-quality mainshaft is engineered to handle sustained boost...DS199409- SKU:
- DS199409
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- STYLE:
- STANDARD RATIO
- UNITS:
- EACH
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE
$210.95 -
ANDREWS Mainshaft Drive Gear - 5th Gear 299105
ANDREWS
$288.95If you're pushing your transmission to higher RPMs or upgrading to a performance build, your factory 5th gear may not deliver the durability or precision you need. The ANDREWS Mainshaft Drive Gear 5th Gear (299105) is engineered for racers and...DS199469- SKU:
- DS199469
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- UNITS:
- EACH
- TOOTH COUNT:
- 33
- TYPE:
- MAIN DRIVE
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD RATIO
$288.95 -
ANDREWS Pulley - 30 Tooth 290304
ANDREWS
$211.95The ANDREWS 30-tooth pulley delivers precise belt drive control for custom cruisers and touring bikes where stock ratios don't cut it. Machined from heat-treated, gear-quality steel, this U.S.-made component ensures reliability under sustained load and...DS199477- SKU:
- DS199477
- Availability:
- Ships Same Business Day
- Weight:
- 5.08 LBS
- MATERIAL:
- STEEL
- MODEL:
- GOOD ACCELERATION
- PRODUCT NAME:
- PULLEY
- TOOTH COUNT:
- 30
- TRANSMISSION TYPE:
- 5 SPEED
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- UNITS:
- EACH
$211.95 -
ANDREWS Pulley - 34 Tooth 290344
ANDREWS
$217.95The ANDREWS 34 Tooth Pulley delivers reliable, consistent power transfer for your drive system while maintaining tight tolerances essential for high-performance applications. Built from heat-treated, gear-quality steel, this pulley resists wear and...DS199478- SKU:
- DS199478
- Availability:
- Ships Same Business Day
- Weight:
- 6.40 LBS
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 34
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- MODEL:
- SMOOTH CRUISING
- PRODUCT NAME:
- PULLEY
- TRANSMISSION TYPE:
- 5 SPEED
$217.95 -
BAKER DRIVETRAIN Transmission Sprocket Spacer 33344-94S
BAKER DRIVETRAIN
$27.00Case-hardened steel with a Rockwell "C" hardness of 55 and a polished finish, 1.7" i.d.; .600" thick, Made in the U.S.A.11060001- SKU:
- 11060001
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- MATERIAL:
- STEEL
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPACER
- TYPE:
- TRANSMISSION
$27.00 -
ANDREWS Countershaft Clutch Gear - 1st and 2nd Gear 205120
ANDREWS
$63.95Sold individually, unless noted.DS199420- SKU:
- DS199420
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- TYPE:
- FIRST GEAR
- PRODUCT NAME:
- COUNTER SHAFT CLUTCH GEAR
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- SECOND GEAR
$63.95Qty in Cart: 0Quantity:Price:$63.95Subtotal: -
ANDREWS 5-Speed Mainshaft 296850
ANDREWS
$331.95Sold individually, unless noted.DS199422- SKU:
- DS199422
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- UNITS:
- EACH
- STYLE:
- 5 SPEED
- STYLE:
- BELT DRIVE
- PRODUCT NAME:
- MAINSHAFT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
$331.95 -
ANDREWS Countershaft 296700
ANDREWS
$184.95Sold individually unless noted, All Andrews parts are made in the U.S.A.DS199423- SKU:
- DS199423
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- PRODUCT NAME:
- COUNTERSHAFT
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TRANSMISSION TYPE:
- 5 SPEED
$184.95 -
ANDREWS 5-Speed Mainshaft 296900
ANDREWS
$342.95Sold individually, unless noted.DS199424- SKU:
- DS199424
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- STYLE:
- 5 SPEED
- STYLE:
- BELT DRIVE
- PRODUCT NAME:
- MAINSHAFT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- UNITS:
- EACH
$342.95 -
ANDREWS Mainshaft Clutch Gear 205340
ANDREWS
$69.95Sold individually, unless noted.DS199425- SKU:
- DS199425
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- CLUTCH
$69.95 -
ANDREWS 3rd Gear Mainshaft 206215
ANDREWS
$115.95Sold individually, unless noted.DS199426- SKU:
- DS199426
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- GEAR
- THIRD GEAR RATIO:
- 1.23:1
- TYPE:
- THIRD GEAR
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD RATIO
- UNITS:
- EACH
$115.95
