Dirt Bike Drivetrain
Dirt Bike Drivetrain Parts at JJ Motorsports
Enhance your dirt bike’s power transfer with premium drivetrain parts from JJ Motorsports. Find heavy-duty chains, front and rear sprockets, and clutch components designed to withstand intense riding demands. Combine these with other motocross gear and parts to maximize acceleration and ride efficiency on the track or trail.
Shop trusted brands like JT Chains for sealed chains and Renthal for ultralight sprockets. Explore related categories such as Dirt Bike Engine Parts for power upgrades or Dirt Bike Exhaust for complete tuning.
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
-
On Sale
Renthal Twinring Rear Sprocket 49-Tooth Green 520 Chain 112052049GPGN
RENTHAL
MSRP: $149.98Now: $134.98Was: $149.98If you're running a 520 chain setup, your sprocket choice directly impacts acceleration response, chain longevity, and overall drivetrain reliability. The Renthal Twinring 49-tooth rear sprocket...12101139- SKU:
- 12101139
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- GREEN
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
MSRP: $149.98Now: $134.98Was: $149.98 -
On Sale
Renthal Twinring Rear Sprocket 51T Green 112052051GPGN
RENTHAL
MSRP: $152.95Now: $137.66Was: $152.95If you're running a 520 chain on dirt or adventure terrain, sprocket wear directly impacts your power delivery and chain life. The Renthal Twinring 51T combines a lightweight aluminum core with a...12101141- SKU:
- 12101141
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- COLOR/FINISH:
- GREEN
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
MSRP: $152.95Now: $137.66Was: $152.95 -
On Sale
Renthal Ultralight Rear Sprocket 50T Silver 131U-520-50GBSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82Shaving unsprung weight off your Yamaha directly improves handling responsiveness and acceleration—the Renthal Ultralight 50T rear sprocket delivers a measurable advantage in both stock and modified...R13150- SKU:
- R13150
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 50
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 49-Tooth Rear Sprocket for Yamaha 520 Chain 150U-520-49GBSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82A rear sprocket is one of the highest-wear drivetrain components on any bike—constant chain engagement and mud exposure demand a part that can handle punishment without adding rotational mass. The...R150A52049- SKU:
- R150A52049
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 49
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 51-Tooth Rear Sprocket for Yamaha 150U-520-51GBSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82A lighter rear sprocket directly improves acceleration, handling, and unsprung weight—critical factors whether you're racing on track or tackling technical terrain. The Renthal 51-tooth sprocket...R150A52051- SKU:
- R150A52051
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- TYPE:
- DRIVE
MSRP: $99.82Now: $89.84Was: $99.82Qty in Cart: 0Quantity:Price:MSRP: $99.82Now: $89.84Was: $99.82Subtotal: -
On Sale
Renthal 520 R1 Works Chain 114 Links C125
RENTHAL
MSRP: $139.65Now: $125.69Was: $139.65When you're pushing your bike to the limit on the track, your chain can't afford to slip or fail. The Renthal 520 R1 Works Chain delivers the tensile strength and precision engineering needed for...R1520114- SKU:
- R1520114
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
- CHAIN SIZE:
- 520
- CHAIN TYPE:
- 520 R1
- MODEL:
- R1
- TENSILE STRENGTH IMPERIAL:
- 7644 LB
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 450 CC
- RIDING STYLE:
- UTV
- COLOR/FINISH:
- GOLD
- MASTER LINK CONNECTOR:
- CLIP
- RIDING STYLE:
- ATV
- SEAL TYPE:
- NON-SEAL
- UNITS:
- EACH
- NUMBER OF LINKS:
- 114
- PRODUCT NAME:
- DRIVE CHAIN
- RIDING STYLE:
- OFF-ROAD
- TENSILE STRENGTH METRIC:
- 34 KN
MSRP: $139.65Now: $125.69Was: $139.65 -
On Sale
Renthal 46-Tooth Rear Sprocket for Honda CR125R CR250R CR500R CRF150F CRF230F CRF250F CRF250R CRF250RX CRF250X CRF450R CRF450RL CRF450RWE CRF450RX CRF450X XR250R XR400R XR650R 154U-520-46GRSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82Whether you're pushing hard on the track or grinding through technical terrain, a worn or unsuitable rear sprocket will compromise acceleration, top-end performance, and chain longevity. The Renthal...R15446- SKU:
- R15446
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
- UNITS:
- EACH
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal Ultralight Rear Sprocket 47T 520 Chain Silver 154U-520-47GRSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82If you're running a Honda and serious about lap times or trail performance, rear sprocket selection directly impacts your power delivery and handling characteristics. The Renthal Ultralight 47T...R15447- SKU:
- R15447
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 51-Tooth Rear Sprocket for Honda 154U-520-51GRSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82A quality rear sprocket is foundational to consistent power delivery and acceleration—and this Renthal unit delivers without compromise. The 7075-T6 aluminum construction sheds unnecessary weight...R15451- SKU:
- R15451
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- TYPE:
- DRIVE
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 53-Tooth Rear Sprocket for Honda CR125R CR250R CR500R CRF150F CRF230F CRF250F CRF250R CRF250RX CRF250X CRF450R CRF450RL CRF450RWE CRF450RX CRF450X XR250R XR400R XR650R 154U-520-53GRSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82If you're running a Honda dirt bike or off-road machine, your rear sprocket directly impacts acceleration, top-end speed, and overall driveability. The Renthal 53-Tooth Rear Sprocket delivers a...R15453- SKU:
- R15453
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 53
- TYPE:
- DRIVE
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
MSRP: $99.82Now: $89.84Was: $99.82Qty in Cart: 0Quantity:Price:MSRP: $99.82Now: $89.84Was: $99.82Subtotal: -
On Sale
Renthal 49-Tooth Ultralight Rear Sprocket for Kawasaki KX100 KX85 KX80 191U-420-49GESI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82If you're running a KX100, KX85, or KX80, this Renthal ultralight rear sprocket delivers measurable gains in acceleration and handling by cutting weight without sacrificing durability. The 7075-T6...R19149- SKU:
- R19149
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 51-Tooth Rear Sprocket for Kawasaki KX100 KX85 KX80 191U-420-51GESI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82If you're running a KX85, KX80, or KX100, sprocket choice directly impacts acceleration, top-end speed, and overall drivetrain efficiency. The Renthal 51-tooth rear sprocket delivers a...R19151- SKU:
- R19151
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 48-Tooth Ultralight Rear Sprocket for KTM 65 SX 192U-420-48GPSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82Unsprung weight directly impacts your KTM's acceleration and handling, especially on the track or trail. The Renthal 48-Tooth Ultralight Rear Sprocket cuts rotational mass by 66% compared to steel...R192U42048- SKU:
- R192U42048
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 420
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- SILVER
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 49-Tooth Rear Sprocket for KTM 65 SX 192U-420-49GPSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82If you're running your KTM 65 SX hard on the track or trail, sprocket weight and traction directly impact your lap times and handling precision. The Renthal 49-tooth rear sprocket cuts weight by 66%...R192U42049- SKU:
- R192U42049
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- CHAIN SIZE:
- 420
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- SILVER
- TYPE:
- DRIVE
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 48-Tooth Ultralight Rear Sprocket for KTM 224U-520-48GPSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82Reducing unsprung weight is one of the most direct ways to improve acceleration and handling on a dirt bike, and the Renthal 48-Tooth Ultralight Rear Sprocket delivers exactly that. By switching to...R22448- SKU:
- R22448
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 50-Tooth Rear Sprocket for KTM 224U-520-50GPSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82If you're running a KTM in mud or sand, sprocket weight directly impacts your bike's acceleration and handling—and this Renthal 50-tooth cuts 66% of the mass compared to steel. The self-cleaning...R22450- SKU:
- R22450
- Availability:
- Ships Same Business Day
- Weight:
- 0.82 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 12-Tooth Front Sprocket 520 Chain Kawasaki Yamaha 252--520-12GP
RENTHAL
MSRP: $37.95Now: $34.16Was: $37.95A lightweight front sprocket is one of the most effective upgrades for improving throttle response and reducing unsprung weight—and the Renthal 12-tooth delivers both without sacrificing durability...R25252012- SKU:
- R25252012
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 12
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
MSRP: $37.95Now: $34.16Was: $37.95Qty in Cart: 0Quantity:Price:MSRP: $37.95Now: $34.16Was: $37.95Subtotal: -
On Sale
Renthal 15T Front Sprocket 520 Chain Kawasaki Yamaha 252-520-15GP
RENTHAL
MSRP: $37.95Now: $34.16Was: $37.95A worn or oversized front sprocket robs your motorcycle of crisp acceleration and forces your chain to work harder than necessary. The Renthal 15T Front Sprocket delivers measurable improvements in...R25252015- SKU:
- R25252015
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 15
- TYPE:
- DRIVE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- NATURAL
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $37.95Now: $34.16Was: $37.95 -
On Sale
Renthal 13 Tooth Ultralight Front Sprocket for Honda CR250R CR500R CRF450R CRF450X TRX450R 253U-520-13GP
RENTHAL
MSRP: $47.95Now: $43.16Was: $47.95Shave weight off your front end while gaining durability where it matters most. The Renthal 13-Tooth Ultralight Front Sprocket delivers the precision engineering and material science that separates...R253U52013- SKU:
- R253U52013
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- COLOR/FINISH:
- NATURAL
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ATV
- TYPE:
- COUNTERSHAFT
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STEEL
- STYLE:
- ULTRALIGHT
MSRP: $47.95Now: $43.16Was: $47.95 -
On Sale
Renthal 12T Front Sprocket for Suzuki RM125 RM-Z250 254--520-12GP
RENTHAL
MSRP: $37.95Now: $34.16Was: $37.95A worn or inefficient front sprocket directly impacts your Suzuki's throttle response and chain wear. The Renthal 12T Front Sprocket eliminates mud-induced performance loss with self-cleaning grooves...R25452012- SKU:
- R25452012
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 12
- CHAIN SIZE:
- 520
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
MSRP: $37.95Now: $34.16Was: $37.95
