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Dirt Bike

Dirt Bike

Browse over 50,000+ off-roading dirt bike parts and gear ready to be delivered to your doorstep. We offer riding gear & apparel at great prices. Along with parts and tools you need to keep the bike on the track or trails. Shop the biggest names in the motocross industry from Renthal, Dunlop, Thor, Maxima, Pro Circuit, Bill's Pipes, FMF, Excel and so many more. From dirt bike engine parts to new clutches we have what you need to stay one step ahead of your competition. Have a fitment question? reach out to our phone line at (231) 767-5055

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • On Sale
    PROX Inner Clutch Hub - KX250/X 18.4351

    PROX Inner Clutch Hub - KX250/X 18.4351

    PROX

    MSRP: $71.95
    Now: $55.00
    Was: $71.95
    The inner clutch hub is a critical wear component that directly impacts power transfer and clutch engagement consistency on your KX250/X. A worn or damaged hub compromises shift quality, increases slippage, and can cascade into premature clutch basket...
    11321874
    SKU:
    11321874
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    MSRP: $71.95
    Now: $55.00
    Was: $71.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $71.95
    Now: $55.00
    Was: $71.95
    Subtotal:
  • On Sale
    PROX Inner Clutch Hub - Kawasaki 18.4406

    PROX Inner Clutch Hub - Kawasaki 18.4406

    PROX

    MSRP: $77.95
    Now: $64.00
    Was: $77.95
    The inner clutch hub is the critical load-bearing component that transfers engine power to your primary clutch basket—any wear or damage here directly compromises acceleration response and overall drivetrain reliability. A quality replacement hub ensures...
    11321875
    SKU:
    11321875
    Availability:
    Ships Same Business Day
    Weight:
    1.09 LBS
    MSRP: $77.95
    Now: $64.00
    Was: $77.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $77.95
    Now: $64.00
    Was: $77.95
    Subtotal:
  • On Sale
    PROX Inner Clutch Hub - KX450F/X 18.4411

    PROX Inner Clutch Hub - KX450F/X 18.4411

    PROX

    MSRP: $77.95
    Now: $64.00
    Was: $77.95
    A worn or damaged inner clutch hub compromises power delivery and throttle response on your KX450F/X. The PROX Inner Clutch Hub is precision-cast and machined to OEM specifications, ensuring reliable engagement with both stock and aftermarket primary...
    11321876
    SKU:
    11321876
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    MSRP: $77.95
    Now: $64.00
    Was: $77.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $77.95
    Now: $64.00
    Was: $77.95
    Subtotal:
  • On Sale
    PROX Clutch Slave Cylinder Rebuild Kit - Husqvarna 16.950012

    PROX Clutch Slave Cylinder Rebuild Kit - Husqvarna 16.950012

    PROX

    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    A worn or leaking clutch slave cylinder compromises your shift precision and can leave you stranded. This PROX rebuild kit gives you a complete, cost-effective solution to restore your Husqvarna's clutch actuation to factory specifications without...
    11321878
    SKU:
    11321878
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    Subtotal:
  • On Sale
    PROX Clutch Slave Cylinder Rebuild Kit - Gas Gas/Husqvarna/KTM 16.950013

    PROX Clutch Slave Cylinder Rebuild Kit - Gas Gas/Husqvarna/KTM 16.950013

    PROX

    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    A worn or leaking clutch slave cylinder compromises your bike's clutch engagement and creates safety risks on the track or trail. This PROX rebuild kit delivers all necessary internal components to restore your cylinder to OEM specifications without the...
    11321879
    SKU:
    11321879
    Availability:
    Ships Same Business Day
    Weight:
    0.14 LBS
    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    Subtotal:
  • On Sale
    PROX Clutch Slave Cylinder Rebuild Kit - Gas Gas/Husqvarna/KTM 16.950014

    PROX Clutch Slave Cylinder Rebuild Kit - Gas Gas/Husqvarna/KTM 16.950014

    PROX

    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    A worn or leaking clutch slave cylinder compromises your shift precision and can leave you stranded. This PROX rebuild kit gives you everything needed to restore full hydraulic function without replacing the entire cylinder. Get back to reliable,...
    11321880
    SKU:
    11321880
    Availability:
    Ships Same Business Day
    Weight:
    0.14 LBS
    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    Subtotal:
  • On Sale
    PROX Clutch Slave Cylinder Rebuild Kit - Gas Gas/Husqvarna/KTM 16.950015

    PROX Clutch Slave Cylinder Rebuild Kit - Gas Gas/Husqvarna/KTM 16.950015

    PROX

    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    A worn or deteriorating clutch slave cylinder compromises your bike's clutch engagement and modulation—critical factors for precise control on the track or trail. This rebuild kit restores your hydraulic clutch system to OEM specifications, eliminating...
    11321881
    SKU:
    11321881
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    Subtotal:
  • On Sale
    PROX Clutch Slave Cylinder Rebuild Kit - KX250/450F/X 16.950016

    PROX Clutch Slave Cylinder Rebuild Kit - KX250/450F/X 16.950016

    PROX

    MSRP: $37.95
    Now: $30.00
    Was: $37.95
    A worn or failing clutch slave cylinder compromises your bike's clutch engagement, leading to sluggish shifts, dragging clutch, and potential damage to your transmission. This PROX rebuild kit gives you a cost-effective alternative to replacing the...
    11321882
    SKU:
    11321882
    Availability:
    Ships Same Business Day
    Weight:
    0.17 LBS
    MSRP: $37.95
    Now: $30.00
    Was: $37.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $37.95
    Now: $30.00
    Was: $37.95
    Subtotal:
  • On Sale
    PROX Clutch Slave Cylinder Rebuild Kit - 690 Enduro R 16.950038

    PROX Clutch Slave Cylinder Rebuild Kit - 690 Enduro R 16.950038

    PROX

    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    A worn or leaking clutch slave cylinder compromises your ability to modulate power delivery precisely—critical whether you're trail riding or pushing the 690 Enduro R to its limits. This rebuild kit delivers OEM-equivalent components without the downtime...
    11321883
    SKU:
    11321883
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $71.95
    Now: $56.00
    Was: $71.95
    Subtotal:
  • On Sale
    PROX Clutch Slave Cylinder Rebuild Kit - CRF 450R/RX 16.950040

    PROX Clutch Slave Cylinder Rebuild Kit - CRF 450R/RX 16.950040

    PROX

    MSRP: $37.95
    Now: $30.00
    Was: $37.95
    A worn or leaking clutch slave cylinder compromises your bike's engagement precision and can leave you stranded mid-ride. This PROX rebuild kit restores your CRF 450R/RX to factory hydraulic performance with OEM-equivalent components, eliminating the...
    11321884
    SKU:
    11321884
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MSRP: $37.95
    Now: $30.00
    Was: $37.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $37.95
    Now: $30.00
    Was: $37.95
    Subtotal:
  • On Sale
    PROX Friction Plate Set - CRF250R/RX 16.S13093

    PROX Friction Plate Set - CRF250R/RX 16.S13093

    PROX

    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Worn or glazed friction plates compromise clutch engagement and throttle response—critical issues on a race-prepped or high-mileage CRF250R/RX. This OEM-spec friction plate set restores precise bite and consistent power delivery, whether you're logging...
    11313914
    SKU:
    11313914
    Availability:
    Ships Same Business Day
    Weight:
    0.66 LBS
    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Subtotal:
  • On Sale
    PROX Friction Plate Set - CRF250R/RX 16.S13094

    PROX Friction Plate Set - CRF250R/RX 16.S13094

    PROX

    MSRP: $112.95
    Now: $93.00
    Was: $112.95
    Worn or glazed friction plates compromise clutch response and throttle control—especially critical on track or in competitive riding. This OEM-spec friction plate set restores precise engagement and eliminates slippage, delivering the consistent bite...
    11313915
    SKU:
    11313915
    Availability:
    Ships Same Business Day
    Weight:
    0.71 LBS
    MSRP: $112.95
    Now: $93.00
    Was: $112.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $112.95
    Now: $93.00
    Was: $112.95
    Subtotal:
  • On Sale
    PROX Friction Plate Set - CRF450R/L/X/RX 16.S14091

    PROX Friction Plate Set - CRF450R/L/X/RX 16.S14091

    PROX

    MSRP: $81.95
    Now: $68.00
    Was: $81.95
    A worn or glazed clutch friction plate set robs your CRF450 of crisp power delivery and smooth engagement, leading to slippage under load and inconsistent performance. This OEM-specification friction plate set restores factory-level clutch response and...
    11313916
    SKU:
    11313916
    Availability:
    Ships Same Business Day
    Weight:
    0.61 LBS
    MSRP: $81.95
    Now: $68.00
    Was: $81.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $81.95
    Now: $68.00
    Was: $81.95
    Subtotal:
  • On Sale
    PROX Friction Plate Set - YZ65 16.S20018

    PROX Friction Plate Set - YZ65 16.S20018

    PROX

    MSRP: $63.95
    Now: $51.00
    Was: $63.95
    A worn or slipping clutch can cost you race time and reliability when you need it most. The PROX Friction Plate Set delivers OEM-exact performance for your YZ65, restoring crisp engagement and smooth power delivery without compromise. Complete...
    11313917
    SKU:
    11313917
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    MSRP: $63.95
    Now: $51.00
    Was: $63.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $63.95
    Now: $51.00
    Was: $63.95
    Subtotal:
  • On Sale
    PROX Friction Plate Set - Yamaha 16.S23065

    PROX Friction Plate Set - Yamaha 16.S23065

    PROX

    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    A worn or glazed clutch friction plate set compromises your ability to deliver power consistently and safely, whether you're on the track or the street. PROX Friction Plate Sets are manufactured to exact OEM specifications, ensuring smooth engagement,...
    11313918
    SKU:
    11313918
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Subtotal:
  • On Sale
    PROX Friction Plate Set - YZ450F 16.S24066

    PROX Friction Plate Set - YZ450F 16.S24066

    PROX

    MSRP: $122.95
    Now: $102.00
    Was: $122.95
    A worn or glazed clutch plate set directly compromises throttle response and power delivery on your YZ450F—compromising both track performance and trail reliability. The PROX Friction Plate Set restores OEM-spec engagement characteristics, ensuring...
    11313919
    SKU:
    11313919
    Availability:
    Ships Same Business Day
    Weight:
    0.93 LBS
    MSRP: $122.95
    Now: $102.00
    Was: $122.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.95
    Now: $102.00
    Was: $122.95
    Subtotal:
  • On Sale
    PROX Friction Plate Set - KX250/X 16.S43041

    PROX Friction Plate Set - KX250/X 16.S43041

    PROX

    MSRP: $122.95
    Now: $102.00
    Was: $122.95
    A worn or glazed friction plate set compromises clutch engagement and throttle response—critical factors whether you're racing competitively or pushing your KX250/X hard on the track. This OEM-specification friction plate set delivers the smooth,...
    11313920
    SKU:
    11313920
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    MSRP: $122.95
    Now: $102.00
    Was: $122.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.95
    Now: $102.00
    Was: $122.95
    Subtotal:
  • On Sale
    PROX Friction Plate Set - KX450F 16.S44029

    PROX Friction Plate Set - KX450F 16.S44029

    PROX

    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    A worn or glazed clutch friction plate set robs your KX450F of engagement precision and throttle response—exactly what you can't afford in competitive riding or trail work. This OEM-spec PROX friction plate set restores the stock clutch's original biting...
    11313921
    SKU:
    11313921
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Subtotal:
  • On Sale
    PROX Friction Plate Set - Gas Gas/Husqvarma/KTM 16.S53009

    PROX Friction Plate Set - Gas Gas/Husqvarma/KTM 16.S53009

    PROX

    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Your clutch's friction plates are the critical interface between engine power and wheel traction—wear or glazing here directly compromises bite, modulation, and overall drivetrain reliability. This PROX OEM-spec replacement set restores factory...
    11313924
    SKU:
    11313924
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Subtotal:
  • On Sale
    PROX Friction Plate Set - SE 2.5/3.0 i-F 16.S73008

    PROX Friction Plate Set - SE 2.5/3.0 i-F 16.S73008

    PROX

    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    A worn or glazed clutch friction plate set compromises both drivability and power transfer—especially critical in performance applications where precision engagement directly impacts lap times and reliability. This OEM-specification friction plate set...
    11313925
    SKU:
    11313925
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $102.95
    Now: $85.00
    Was: $102.95
    Subtotal:
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Dirt Bike Parts
Whether you're an avid motocross racer or a weekend off-road enthusiast, having the right dirt bike parts can make all the difference in performance and durability. Below are some key categories of dirt bike parts that can help you keep your machine in top condition and enhance your riding experience.

 

Dirt Bike Exhaust Parts
Dirt bike exhaust parts are crucial for optimizing your bike's performance. A high-quality exhaust system can improve your bike's power output and overall efficiency. From full exhaust systems to mufflers and silencers, the right components can not only boost performance but also provide the perfect sound that suits your style.

 

MX Dirt Bike Aftermarket Parts
MX dirt bike aftermarket parts include a wide range of components designed to replace and upgrade your bike's stock parts. Whether you're looking for enhanced suspension systems, robust brake components, or stylish handlebars, aftermarket parts offer the customization options needed to tailor your bike to your specific riding preferences and needs.

 

2-Stroke Dirt Bike Engine Parts
For those riding 2-stroke dirt bikes, having access to reliable engine parts is essential. This category includes everything from pistons and cylinders to carburetors and gaskets. Quality engine parts ensure that your bike runs smoothly and efficiently, providing the power and performance you need on the track or trail.

 

Motocross Dirt Bike Parts
Motocross dirt bike parts span a broad array of components designed for competitive racing and hardcore riding. This includes advanced suspension systems, heavy-duty tires, reinforced frames, and high-performance braking systems. Essential for riders who push their bikes to the limits, these parts help ensure safety, reliability, and peak performance.

 

Oils
Selecting the right oils for your dirt bike is crucial for maintaining engine health and performance. From engine oils to transmission fluids and fork oils, high-quality lubricants reduce friction and wear, extending the life of your engine and other key components. Ensuring that you're using the proper oils can lead to a smoother and more reliable riding experience.

 

 

Whether you’re riding tracks, trails, or hare scrambles we have the perfect dirt bike aftermarket accessory or part for ripping holeshots and riding through the woods, look no further than JJ Motorsports. With a full selection of four-stroke and two-stroke pipes as well as tools to keep your ride running smoothly from headlight bulbs all the way down to oil changes, we have what it takes! Need replacement parts for upgrades? We have the latest aftermarket parts to replace clutches, top-end kits, and forks from popular brands.


We carry general maintenance products like engine oils and coolants, in addition, we have a large selection of parts for bike-specific applications for a certain year, make, and model. 


We at JJ Motorsports know that finding the right parts can be a pain, which is why we handpick every single one of our dirt bike components. No more guessing games or getting stuck with parts from other places! Our team has been in this industry for years so if you need help just call them at 1-231-767-5055 and they'll provide advice based on their personal experience as well as history within motorsports retailing - guaranteed to get things taken care of quickly without sacrificing quality.
 
Motocross Classes Common at Races
Popular motocross racing divisions/classes across the United States include:
Open Classes
250 A/B/C
Schoolboy/College Boy
Supermini
85cc
65cc
50cc 
 
Dirt Bike Racing for Beginners and Pro-Am's
AMA - American Motorcyclist Association
 
Popular Amateur Nationals and Series
Loretta Lynns MX Racing Nationals
Winter Olympics Mini O’s 
Baja Acres Baja Brawl
Kicker AMA Areanacross Championship
Midsouth Areanacross
The MotoPlayGround Race at Ponca City

and many more!
 
JJ Motorsports offers fast and free shipping on orders over $99 for aftermarket dirt bike parts and accessories delivered right to you!

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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