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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

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  • POLISPORT Number Plate - Gray - CRF 450R/RX 8670700004

    POLISPORT Number Plate - Gray - CRF 450R/RX 8670700004

    POLISPORT

    $30.99
    OEM replacement number plates take a beating on the track and trail—mud, impacts, and UV exposure degrade them quickly. The Polisport Number Plate restores your CRF 450R/RX's front end with a durable, color-matched alternative that resists fading and...
    05203216
    SKU:
    05203216
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    $30.99
    Qty in Cart: 0
    Quantity:
    Price:
    $30.99
    Subtotal:
  • On Sale
    POLISPORT Radiator Cover - Restyle - Black - CR 125R/250R 8421600003

    POLISPORT Radiator Cover - Restyle - Black - CR 125R/250R 8421600003

    POLISPORT

    MSRP: $67.99
    Now: $44.00
    Was: $67.99
    A damaged or faded radiator cover compromises both aesthetics and airflow management on your CR 125R or 250R. The POLISPORT Restyle Radiator Cover restores OEM-correct appearance while delivering superior durability and impact resistance compared to...
    05202890
    SKU:
    05202890
    Availability:
    Ships Same Business Day
    Weight:
    1.46 LBS
    MSRP: $67.99
    Now: $44.00
    Was: $67.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $67.99
    Now: $44.00
    Was: $67.99
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  • POLISPORT Side Panels - Black - '18 Restyle - CR125R 8420300002

    POLISPORT Side Panels - Black - '18 Restyle - CR125R 8420300002

    POLISPORT

    $61.99
    Your CR125R's original side panels take a beating from track dust, crashes, and UV exposure—and OEM replacements can drain your budget fast. POLISPORT's injection-molded side panels deliver the exact fit and finish of stock parts while offering superior...
    05202891
    SKU:
    05202891
    Availability:
    Ships Same Business Day
    Weight:
    0.56 LBS
    $61.99
    Qty in Cart: 0
    Quantity:
    Price:
    $61.99
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  • POLISPORT Airbox Cover - '18 CRF Restyle - Red - CR125/250R 8421700001

    POLISPORT Airbox Cover - '18 CRF Restyle - Red - CR125/250R 8421700001

    POLISPORT

    $33.99
    OEM airbox covers take a beating from UV exposure, impacts, and daily wear—leaving your CRF looking tired and faded. The POLISPORT Airbox Cover delivers the exact stock appearance with superior durability and color retention at a fraction of OEM...
    05202893
    SKU:
    05202893
    Availability:
    Ships Same Business Day
    Weight:
    1.01 LBS
    $33.99
    Qty in Cart: 0
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    $33.99
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  • POLISPORT Headlight Mask - White 8666700002

    POLISPORT Headlight Mask - White 8666700002

    POLISPORT

    $30.99
    Stock headlight protection doesn't have to mean settling for fragile OEM plastics that fade and scratch with regular use. The POLISPORT Headlight Mask delivers injection-molded durability that matches your vehicle's original appearance while offering...
    05202903
    SKU:
    05202903
    Availability:
    Ships Same Business Day
    Weight:
    0.61 LBS
    $30.99
    Qty in Cart: 0
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    $30.99
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  • POLISPORT Fender - Rear - Orange - EXC/EXC-F | XC-W/XCF-W 8557000001

    POLISPORT Fender - Rear - Orange - EXC/EXC-F | XC-W/XCF-W 8557000001

    POLISPORT

    $30.99
    Your stock rear fender takes a beating on the trail—mud, rocks, and crashes are part of the game. The POLISPORT rear fender replaces damaged plastic with a stronger, more durable alternative that resists impact and abrasion while maintaining that...
    05202923
    SKU:
    05202923
    Availability:
    Ships Same Business Day
    Weight:
    1.16 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $30.99
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  • POLISPORT Fender - Rear - White - EXC/EXC-F | XC-W/XCF-W 8557000002

    POLISPORT Fender - Rear - White - EXC/EXC-F | XC-W/XCF-W 8557000002

    POLISPORT

    $31.99
    Stock OEM plastic fenders are prone to cracking, fading, and cosmetic damage—especially on high-performance machines that see frequent trail or track use. The Polisport rear fender delivers the exact factory appearance with significantly improved...
    05202924
    SKU:
    05202924
    Availability:
    Ships Same Business Day
    Weight:
    1.15 LBS
    $31.99
    Qty in Cart: 0
    Quantity:
    Price:
    $31.99
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  • POLISPORT Fender - Rear - Black - EXC/EXC-F | XC-W/XCF-W 8557000003

    POLISPORT Fender - Rear - Black - EXC/EXC-F | XC-W/XCF-W 8557000003

    POLISPORT

    $31.99
    Your dirt bike's factory fender takes a beating on the trail, and OEM replacements come with factory pricing to match. The POLISPORT rear fender delivers genuine OEM fitment and appearance without the premium cost, using their proprietary DGP...
    05202925
    SKU:
    05202925
    Availability:
    Ships Same Business Day
    Weight:
    1.14 LBS
    $31.99
    Qty in Cart: 0
    Quantity:
    Price:
    $31.99
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  • POLISPORT Radiator Cover - Orange/Black - KTM 8422100011

    POLISPORT Radiator Cover - Orange/Black - KTM 8422100011

    POLISPORT

    $56.99
    Your KTM's radiator cover takes constant abuse from debris, impacts, and UV exposure—stock replacements are expensive and fail just as quickly. This POLISPORT cover delivers OEM-quality fitment with superior durability at a fraction of the cost, keeping...
    05202926
    SKU:
    05202926
    Availability:
    Ships Same Business Day
    Weight:
    1.30 LBS
    $56.99
    Qty in Cart: 0
    Quantity:
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    $56.99
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  • POLISPORT Radiator Cover - Restyle - Green - KX 125/250 8425800001

    POLISPORT Radiator Cover - Restyle - Green - KX 125/250 8425800001

    POLISPORT

    $61.99
    Protect your KX 125/250 radiator from trail debris, crashes, and UV damage with the POLISPORT Restyle Cover. This injection-molded replacement delivers OEM fitment and finish without the premium price tag, allowing you to maintain peak cooling efficiency...
    05203029
    SKU:
    05203029
    Availability:
    Ships Same Business Day
    Weight:
    1.76 LBS
    $61.99
    Qty in Cart: 0
    Quantity:
    Price:
    $61.99
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  • POLISPORT Radiator Cover - Restyle - Black - KX 125/250 8425800002

    POLISPORT Radiator Cover - Restyle - Black - KX 125/250 8425800002

    POLISPORT

    $61.99
    Your radiator cover takes constant abuse from track conditions, debris, and impact—a damaged or cracked cover compromises airflow and exposes critical cooling components to further damage. The POLISPORT Radiator Cover delivers OEM-precise fitment with...
    05203030
    SKU:
    05203030
    Availability:
    Ships Same Business Day
    Weight:
    1.65 LBS
    $61.99
    Qty in Cart: 0
    Quantity:
    Price:
    $61.99
    Subtotal:
  • POLISPORT Radiator Cover - Restyle - Gray - KX 125/250 8425800003

    POLISPORT Radiator Cover - Restyle - Gray - KX 125/250 8425800003

    POLISPORT

    $61.99
    Factory aesthetics don't have to mean factory durability. The POLISPORT Radiator Cover replaces your stock plastic with injection-molded components engineered to withstand the abuse of competitive riding while maintaining a clean, OEM appearance. If...
    05203031
    SKU:
    05203031
    Availability:
    Ships Same Business Day
    Weight:
    1.60 LBS
    $61.99
    Qty in Cart: 0
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    Price:
    $61.99
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  • POLISPORT Radiator Cover - Restyle - Fluorescent Green - KX 125/250 8425800004

    POLISPORT Radiator Cover - Restyle - Fluorescent Green - KX 125/250 8425800004

    POLISPORT

    $61.99
    A damaged or faded radiator cover compromises both the appearance and protection of your KX's cooling system. The POLISPORT Restyle Radiator Cover restores OEM aesthetics while providing superior impact and abrasion resistance that keeps up with...
    05203032
    SKU:
    05203032
    Availability:
    Ships Same Business Day
    Weight:
    1.60 LBS
    $61.99
    Qty in Cart: 0
    Quantity:
    Price:
    $61.99
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  • POLISPORT Side Panels - '20 KX 450 Restyle - Green - KX 125/250/450 8425900001

    POLISPORT Side Panels - '20 KX 450 Restyle - Green - KX 125/250/450 8425900001

    POLISPORT

    $61.99
    Stock plastic panels take a beating on the track and trail—cracks, scratches, and UV fade are inevitable. POLISPORT side panels give you OEM-accurate fitment and appearance without the premium price tag, and their injection-molded construction is...
    05203033
    SKU:
    05203033
    Availability:
    Ships Same Business Day
    Weight:
    1.40 LBS
    $61.99
    Qty in Cart: 0
    Quantity:
    Price:
    $61.99
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  • POLISPORT Side Panels - Restyle - '20 KX 450 Restyle - Black - KX 125/250/450 8425900002

    POLISPORT Side Panels - Restyle - '20 KX 450 Restyle - Black - KX 125/250/450 8425900002

    POLISPORT

    $61.99
    Stock plastic bodywork takes a beating—whether from track impacts, UV exposure, or everyday abrasion. These POLISPORT side panels deliver OEM-exact fitment with superior durability and impact resistance, giving you a factory-fresh appearance without the...
    05203034
    SKU:
    05203034
    Availability:
    Ships Same Business Day
    Weight:
    1.35 LBS
    $61.99
    Qty in Cart: 0
    Quantity:
    Price:
    $61.99
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  • POLISPORT Side Panels - '20 KX 450 Restyle - Gray - KX 125/250/450 8425900003

    POLISPORT Side Panels - '20 KX 450 Restyle - Gray - KX 125/250/450 8425900003

    POLISPORT

    $61.99
    Factory-spec side panels take a beating on the track and trail—cracks, scuffs, and UV fade are inevitable. These POLISPORT panels deliver OEM-identical fit and appearance while using a tougher, impact-resistant plastic compound that resists the wear and...
    05203035
    SKU:
    05203035
    Availability:
    Ships Same Business Day
    Weight:
    1.46 LBS
    $61.99
    Qty in Cart: 0
    Quantity:
    Price:
    $61.99
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  • POLISPORT Side Panels - '20 KX 450 Restyle - Lime Green - KX125/250/450 8425900004

    POLISPORT Side Panels - '20 KX 450 Restyle - Lime Green - KX125/250/450 8425900004

    POLISPORT

    $61.99
    Original OEM side panels take a beating on the track and trail—cracks, fading, and cosmetic damage are inevitable. The POLISPORT Side Panels for '20 KX 450 deliver genuine OEM fitment with superior durability and color retention, giving you factory...
    05203036
    SKU:
    05203036
    Availability:
    Ships Same Business Day
    Weight:
    2.60 LBS
    $61.99
    Qty in Cart: 0
    Quantity:
    Price:
    $61.99
    Subtotal:
  • POLISPORT Side Panels - Restyle - Gray - YZ 125/250 8607500006

    POLISPORT Side Panels - Restyle - Gray - YZ 125/250 8607500006

    POLISPORT

    $56.99
    Stock YZ side panels take a beating. Whether you're pushing hard on the track or recovering from a crash, OEM replacements drain your wallet fast. POLISPORT's injection-molded panels give you the same fit and finish as factory parts but with superior...
    05203083
    SKU:
    05203083
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    $56.99
    Qty in Cart: 0
    Quantity:
    Price:
    $56.99
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  • POLISPORT Radiator Cover - Gray - YZ 125/250 8417500006

    POLISPORT Radiator Cover - Gray - YZ 125/250 8417500006

    POLISPORT

    $56.99
    Stock radiator covers take a beating on the track and trail—cracks, fading, and impact damage are inevitable. The POLISPORT Radiator Cover for YZ 125/250 delivers OEM-quality protection at a fraction of the cost, with superior durability and a...
    05203084
    SKU:
    05203084
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    $56.99
    Qty in Cart: 0
    Quantity:
    Price:
    $56.99
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  • POLISPORT Complete Body Kit - '13 - '14 OEM Blue/White - YZ 85 90526

    POLISPORT Complete Body Kit - '13 - '14 OEM Blue/White - YZ 85 90526

    POLISPORT

    $143.99
    If your YZ 85 has seen better days—cracked plastics, faded graphics, or cosmetic damage—replacing the entire body kit is far more cost-effective than sourcing individual OEM panels. The POLISPORT Complete Body Kit delivers that factory appearance without...
    05201587
    SKU:
    05201587
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $143.99
    Subtotal:
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Adding your products to cart

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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