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Dirt Bike Engine

Dirt Bike Engine

Dirt Bike Engine

Discover a full range of dirt bike engine components for rebuilding or upgrading your performance. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • HIFLOFILTRO Oil Filter HF143

    HIFLOFILTRO Oil Filter HF143

    HIFLOFILTRO

    $8.29
    HIFLOFILTRO Oil Filter HF143High quality premium oil filter
    HF143
    SKU:
    HF143
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    BASE COLOR:
    YELLOW
    PRODUCT NAME:
    OIL FILTER
    STYLE:
    PREMIUM
    LENGTH METRIC:
    48 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    RIDING STYLE:
    STREET
    TYPE:
    CARTRIDGE
    UNITS:
    EACH
    COLOR/FINISH:
    YELLOW
    RIDING STYLE:
    OFF-ROAD
    WIDTH METRIC:
    38 MM
    $8.29
    Qty in Cart: 0
    Quantity:
    Price:
    $8.29
    Subtotal:
  • HIFLOFILTRO Oil Filter HF141

    HIFLOFILTRO Oil Filter HF141

    HIFLOFILTRO

    $5.32
    HIFLOFILTRO Oil Filter HF141High quality premium oil filter
    HF141
    SKU:
    HF141
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    LENGTH METRIC:
    46 MM
    PRODUCT NAME:
    OIL FILTER
    BASE COLOR:
    RED
    STYLE:
    PREMIUM
    COLOR/FINISH:
    RED
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    TYPE:
    CARTRIDGE
    UNITS:
    EACH
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    WIDTH METRIC:
    38 MM
    $5.32
    Qty in Cart: 0
    Quantity:
    Price:
    $5.32
    Subtotal:
  • HIFLOFILTRO Oil Filter HF139

    HIFLOFILTRO Oil Filter HF139

    HIFLOFILTRO

    $4.47
    HIFLOFILTRO Oil Filter HF139High quality premium oil filter
    HF139
    SKU:
    HF139
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    COLOR/FINISH:
    RED
    LENGTH METRIC:
    44 MM
    PRODUCT NAME:
    OIL FILTER
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    TYPE:
    CARTRIDGE
    WIDTH METRIC:
    44 MM
    STYLE:
    PREMIUM
    BASE COLOR:
    RED
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    $4.47
    Qty in Cart: 0
    Quantity:
    Price:
    $4.47
    Subtotal:
  • HIFLOFILTRO Oil Filter HF137

    HIFLOFILTRO Oil Filter HF137

    HIFLOFILTRO

    $5.18
    HIFLOFILTRO Oil Filter HF137High quality premium oil filter
    HF137
    SKU:
    HF137
    Availability:
    Ships Same Business Day
    Weight:
    0.14 LBS
    COLOR/FINISH:
    RED
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    TYPE:
    CARTRIDGE
    WIDTH METRIC:
    60 MM
    LENGTH METRIC:
    37 MM
    PRODUCT NAME:
    OIL FILTER
    BASE COLOR:
    RED
    STYLE:
    PREMIUM
    UNITS:
    EACH
    $5.18
    Qty in Cart: 0
    Quantity:
    Price:
    $5.18
    Subtotal:
  • HIFLOFILTRO Oil Filter HF112

    HIFLOFILTRO Oil Filter HF112

    HIFLOFILTRO

    $3.92
    HIFLOFILTRO Oil Filter HF112High quality premium oil filter
    HF112
    SKU:
    HF112
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    COLOR/FINISH:
    BLACK
    COLOR/FINISH:
    RED
    LENGTH METRIC:
    38 MM
    RIDING STYLE:
    STREET
    TYPE:
    CARTRIDGE
    PRODUCT NAME:
    OIL FILTER
    RIDING STYLE:
    OFF-ROAD
    BASE COLOR:
    RED
    RIDING STYLE:
    ATV
    STYLE:
    PREMIUM
    UNITS:
    EACH
    WIDTH METRIC:
    50 MM
    $3.92
    Qty in Cart: 0
    Quantity:
    Price:
    $3.92
    Subtotal:
  • HOT RODS Crankshaft Assembly 4138

    HOT RODS Crankshaft Assembly 4138

    HOT RODS

    $430.95
    HOT RODS Crankshaft Assembly 4138Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H134
    SKU:
    H134
    Availability:
    Ships Same Business Day
    Weight:
    8.92 LBS
    COLOR/FINISH:
    STEEL
    MATERIAL:
    4140 STEEL
    UNITS:
    ASSEMBLY
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    49.80 MM
    DISPLACEMENT:
    250 CC
    MODEL:
    2-CYCLE
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    FEATURES:
    STANDARD CRANKSHAFT
    TYPE:
    OEM STROKE
    $430.95
    Qty in Cart: 0
    Quantity:
    Price:
    $430.95
    Subtotal:
  • HOT RODS Crankshaft Assembly 4017

    HOT RODS Crankshaft Assembly 4017

    HOT RODS

    $465.95
    HOT RODS Crankshaft Assembly 4017Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H128X
    SKU:
    H128X
    Availability:
    Ships Same Business Day
    Weight:
    9.46 LBS
    UNITS:
    ASSEMBLY
    DISPLACEMENT:
    250 CC
    MATERIAL:
    4140 STEEL
    MODEL:
    2-CYCLE
    STROKE LENGTH METRIC:
    72.00 MM
    TYPE:
    OEM STROKE
    FEATURES:
    STANDARD CRANKSHAFT
    COLOR/FINISH:
    STEEL
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    RIDING STYLE:
    OFF-ROAD
    $465.95
    Qty in Cart: 0
    Quantity:
    Price:
    $465.95
    Subtotal:
  • HOT RODS Crankshaft Assembly 4036

    HOT RODS Crankshaft Assembly 4036

    HOT RODS

    $392.95
    HOT RODS Crankshaft Assembly 4036Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H125X
    SKU:
    H125X
    Availability:
    Ships Same Business Day
    Weight:
    6.20 LBS
    MODEL:
    2-CYCLE
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    UNITS:
    ASSEMBLY
    COLOR/FINISH:
    STEEL
    MATERIAL:
    4140 STEEL
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    54.60 MM
    TYPE:
    OEM STROKE
    DISPLACEMENT:
    125 CC
    FEATURES:
    STANDARD CRANKSHAFT
    $392.95
    Qty in Cart: 0
    Quantity:
    Price:
    $392.95
    Subtotal:
  • HOT RODS Crankshaft Assembly 4035

    HOT RODS Crankshaft Assembly 4035

    HOT RODS

    $417.95
    HOT RODS Crankshaft Assembly 4035Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H124
    SKU:
    H124
    Availability:
    Ships Same Business Day
    Weight:
    6.30 LBS
    COLOR/FINISH:
    STEEL
    DISPLACEMENT:
    125 CC
    MATERIAL:
    4140 STEEL
    UNITS:
    ASSEMBLY
    FEATURES:
    STANDARD CRANKSHAFT
    MODEL:
    2-CYCLE
    TYPE:
    OEM STROKE
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    54.60 MM
    $417.95
    Qty in Cart: 0
    Quantity:
    Price:
    $417.95
    Subtotal:
  • HOT RODS Crankshaft Assembly 4034

    HOT RODS Crankshaft Assembly 4034

    HOT RODS

    $257.95
    HOT RODS Crankshaft Assembly 4034Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H123
    SKU:
    H123
    Availability:
    Ships Same Business Day
    Weight:
    4.45 LBS
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    FEATURES:
    STANDARD CRANKSHAFT
    MODEL:
    2-CYCLE
    TYPE:
    OEM STROKE
    COLOR/FINISH:
    STEEL
    DISPLACEMENT:
    85 CC
    MATERIAL:
    4140 STEEL
    UNITS:
    ASSEMBLY
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    48.00 MM
    $257.95
    Qty in Cart: 0
    Quantity:
    Price:
    $257.95
    Subtotal:
  • HOT RODS Crankshaft Assembly 4033

    HOT RODS Crankshaft Assembly 4033

    HOT RODS

    $294.95
    HOT RODS Crankshaft Assembly 4033Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H122
    SKU:
    H122
    Availability:
    Ships Same Business Day
    Weight:
    4.50 LBS
    MODEL:
    2-CYCLE
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    48.00 MM
    UNITS:
    ASSEMBLY
    COLOR/FINISH:
    STEEL
    DISPLACEMENT:
    80 CC
    MATERIAL:
    4140 STEEL
    FEATURES:
    STANDARD CRANKSHAFT
    TYPE:
    OEM STROKE
    $294.95
    Qty in Cart: 0
    Quantity:
    Price:
    $294.95
    Subtotal:
  • HOT RODS Crankshaft Assembly 4016

    HOT RODS Crankshaft Assembly 4016

    HOT RODS

    $270.95
    HOT RODS Crankshaft Assembly 4016Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H119
    SKU:
    H119
    Availability:
    Ships Same Business Day
    Weight:
    4.50 LBS
    MODEL:
    2-CYCLE
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    DISPLACEMENT:
    80 CC TO 100 CC
    FEATURES:
    STANDARD CRANKSHAFT
    STROKE LENGTH METRIC:
    45.80 MM
    TYPE:
    OEM STROKE
    COLOR/FINISH:
    STEEL
    MATERIAL:
    4140 STEEL
    UNITS:
    ASSEMBLY
    RIDING STYLE:
    OFF-ROAD
    $270.95
    Qty in Cart: 0
    Quantity:
    Price:
    $270.95
    Subtotal:
  • HOT RODS Crankshaft Assembly 4012

    HOT RODS Crankshaft Assembly 4012

    HOT RODS

    $183.95
    HOT RODS Crankshaft Assembly 4012Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H115
    SKU:
    H115
    Availability:
    Ships Same Business Day
    Weight:
    4.65 LBS
    MODEL:
    2-CYCLE
    COLOR/FINISH:
    STEEL
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    DISPLACEMENT:
    80 CC
    FEATURES:
    STANDARD CRANKSHAFT
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    48.00 MM
    TYPE:
    OEM STROKE
    MATERIAL:
    4140 STEEL
    UNITS:
    ASSEMBLY
    $183.95
    Qty in Cart: 0
    Quantity:
    Price:
    $183.95
    Subtotal:
  • HOT RODS Crankshaft Assembly 4002

    HOT RODS Crankshaft Assembly 4002

    HOT RODS

    $397.95
    HOT RODS Crankshaft Assembly 4002Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H101
    SKU:
    H101
    Availability:
    Ships Same Business Day
    Weight:
    9.19 LBS
    MATERIAL:
    4140 STEEL
    STROKE LENGTH METRIC:
    72.00 MM
    UNITS:
    ASSEMBLY
    DISPLACEMENT:
    250 CC
    FEATURES:
    STANDARD CRANKSHAFT
    MODEL:
    2-CYCLE
    TYPE:
    OEM STROKE
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    STEEL
    $397.95
    Qty in Cart: 0
    Quantity:
    Price:
    $397.95
    Subtotal:
  • HOT CAMS Camshaft 1016-1

    HOT CAMS Camshaft 1016-1

    HOT CAMS

    $415.95
    HOT CAMS Camshaft 1016-1High-performance racing camshafts, Stage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springs, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide...
    CRF450S1A
    SKU:
    CRF450S1A
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    EXHAUST DURATION IMPERIAL:
    270°
    INTAKE LIFT METRIC:
    9.60 MM
    EXHAUST LIFT METRIC:
    8.80 MM
    INTAKE DURATION IMPERIAL:
    238°
    RIDING STYLE:
    ATV
    TYPE:
    STAGE 1
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    UNITS:
    EACH
    PRODUCT NAME:
    CAMSHAFT
    $415.95
    Qty in Cart: 0
    Quantity:
    Price:
    $415.95
    Subtotal:
  • HOT RODS Connecting Rod 8159

    HOT RODS Connecting Rod 8159

    HOT RODS

    $140.95
    HOT RODS Connecting Rod 8159Heavy-duty OE replacement connecting rods, Certified 8620 AISI steel provides superior strength, Crankpins are manufactured from hot-rolled ASTM 4115 and case hardened to 58-62Rc, Feature the latest in caged needle roller...
    CR177
    SKU:
    CR177
    Availability:
    Ships Same Business Day
    Weight:
    0.76 LBS
    ENGINE TYPE:
    2-CYCLE
    FEATURES:
    INCLUDES THRUST WASHERS
    PRODUCT NAME:
    CONNECTING ROD KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    MATERIAL:
    8620 STEEL
    $140.95
    Qty in Cart: 0
    Quantity:
    Price:
    $140.95
    Subtotal:
  • HOT RODS Connecting Rod 8143

    HOT RODS Connecting Rod 8143

    HOT RODS

    $140.95
    HOT RODS Connecting Rod 8143Heavy-duty OE replacement connecting rods, Certified 8620 AISI steel provides superior strength, Crankpins are manufactured from hot-rolled ASTM 4115 and case hardened to 58-62Rc, Feature the latest in caged needle roller...
    CR174
    SKU:
    CR174
    Availability:
    Ships Same Business Day
    Weight:
    0.81 LBS
    MATERIAL:
    8620 STEEL
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    FEATURES:
    INCLUDES THRUST WASHERS
    PRODUCT NAME:
    CONNECTING ROD KIT
    ENGINE TYPE:
    2-CYCLE
    $140.95
    Qty in Cart: 0
    Quantity:
    Price:
    $140.95
    Subtotal:
  • HOT RODS Connecting Rod 8147

    HOT RODS Connecting Rod 8147

    HOT RODS

    $128.95
    HOT RODS Connecting Rod 8147Heavy-duty OE replacement connecting rods, Certified 8620 AISI steel provides superior strength, Crankpins are manufactured from hot-rolled ASTM 4115 and case hardened to 58-62Rc, Feature the latest in caged needle roller...
    CR171
    SKU:
    CR171
    Availability:
    Ships Same Business Day
    Weight:
    0.63 LBS
    ENGINE TYPE:
    2-CYCLE
    UNITS:
    KIT
    FEATURES:
    INCLUDES THRUST WASHERS
    MATERIAL:
    8620 STEEL
    PRODUCT NAME:
    CONNECTING ROD KIT
    RIDING STYLE:
    OFF-ROAD
    $128.95
    Qty in Cart: 0
    Quantity:
    Price:
    $128.95
    Subtotal:
  • HOT RODS Connecting Rod 8139

    HOT RODS Connecting Rod 8139

    HOT RODS

    $153.95
    HOT RODS Connecting Rod 8139Heavy-duty OE replacement connecting rods, Certified 8620 AISI steel provides superior strength, Crankpins are manufactured from hot-rolled ASTM 4115 and case hardened to 58-62Rc, Feature the latest in caged needle roller...
    CR166
    SKU:
    CR166
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    MATERIAL:
    8620 STEEL
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    FEATURES:
    INCLUDES THRUST WASHERS
    ENGINE TYPE:
    2-CYCLE
    PRODUCT NAME:
    CONNECTING ROD KIT
    $153.95
    Qty in Cart: 0
    Quantity:
    Price:
    $153.95
    Subtotal:
  • HOT RODS Connecting Rod 8140

    HOT RODS Connecting Rod 8140

    HOT RODS

    $162.95
    HOT RODS Connecting Rod 8140Heavy-duty OE replacement connecting rods, Certified 8620 AISI steel provides superior strength, Crankpins are manufactured from hot-rolled ASTM 4115 and case hardened to 58-62Rc, Feature the latest in caged needle roller...
    CR165
    SKU:
    CR165
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    FEATURES:
    INCLUDES THRUST WASHERS
    ENGINE TYPE:
    2-CYCLE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    MATERIAL:
    8620 STEEL
    PRODUCT NAME:
    CONNECTING ROD KIT
    $162.95
    Qty in Cart: 0
    Quantity:
    Price:
    $162.95
    Subtotal:
  • Total: items /

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Dirt Bike Engine Parts

Keep your dirt bike running smoothly and prolong the life of its engine with essential general maintenance. But when parts start to break down, don't let it stop you from getting out on the trails! JJ Motorsports has all that you need for minor jobs like oil changes or major overhauls such as a complete rebuild - carrying top aftermarket brands . Get back in gear faster by shopping our full line of high-quality dirt bike engine parts here today at JJ Motorsports!

 

At JJ Motorsports, we want to make sure you don't miss out on the ride! If your motor has blown or radiator smashed, our gearheads can help get you back in the seat. We carry piston kits from top brands like Wiseco and Wrench Rabbit engine kits so that riders have access to a wide range of parts for their dirt bike engine rebuilds. Plus – with gaskets at-the-ready when it comes time for any leakages - no need to worry about maintenance issues either; simply stay up on oil & filter changes and let us take care of everything else. Got queries? Just give one of our knowledgeable staff members a call at 1-231‐767‐5055 where they'll be more than happy provide advice, instructions and tailored answers catered just for YOU!