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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 Body Kit - Complete - '14 - '15 OEM Green/White/Black - KX 85 90632

    POLISPORT Body Kit - Complete - '14 - '15 OEM Green/White/Black - KX 85 90632

    POLISPORT

    $143.99
    Kawasaki KX 85 plastics take a beating on the track and trail, and OEM replacements come with an equally brutal price tag. The Polisport Complete Body Kit delivers the exact fit and finish of factory components while offering superior durability and...
    05201722
    SKU:
    05201722
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    $143.99
    Qty in Cart: 0
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    $143.99
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  • POLISPORT Body Kit - Complete - OEM Green/White/Black - KX 85 90696

    POLISPORT Body Kit - Complete - OEM Green/White/Black - KX 85 90696

    POLISPORT

    $143.99
    Whether you've crashed your KX 85, worn through stock plastics, or simply need a fresh aesthetic, the POLISPORT Complete Body Kit delivers OEM-quality replacement fairings without the OEM price tag. These injection-molded components are engineered from...
    05201725
    SKU:
    05201725
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    $143.99
    Qty in Cart: 0
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    $143.99
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  • POLISPORT Radiator Cover - '09/ '12 OEM Green/Black - KX 250F 8412800001

    POLISPORT Radiator Cover - '09/ '12 OEM Green/Black - KX 250F 8412800001

    POLISPORT

    $56.99
    Your radiator is one of the most critical cooling components on your KX 250F, and protecting it from impact damage, mud, and debris is essential for maintaining peak performance on the track or trail. This genuine POLISPORT radiator cover offers OEM-spec...
    05201726
    SKU:
    05201726
    Availability:
    Ships Same Business Day
    Weight:
    1.16 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • POLISPORT Radiator Cover - '09/ '11 OEM Black/Green - KX 250F 8412800004

    POLISPORT Radiator Cover - '09/ '11 OEM Black/Green - KX 250F 8412800004

    POLISPORT

    $56.99
    A damaged or missing radiator cover compromises both the aesthetics and protection of your KX 250F's cooling system. This OEM-spec POLISPORT cover restores factory appearance while shielding your radiator from impact, debris, and abrasion during...
    05201727
    SKU:
    05201727
    Availability:
    Ships Same Business Day
    Weight:
    1.12 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • POLISPORT Radiator Cover - '09/ '11 OEM Black/Green - KX 450F 8412900004

    POLISPORT Radiator Cover - '09/ '11 OEM Black/Green - KX 450F 8412900004

    POLISPORT

    $56.99
    Factory radiator protection doesn't have to mean compromised aesthetics or durability issues. The POLISPORT Radiator Cover for '09–'11 KX 450F models delivers OEM-spec fitment with injection-molded construction that resists impact, abrasion, and the...
    05201728
    SKU:
    05201728
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    $56.99
    Qty in Cart: 0
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  • POLISPORT Radiator Cover - OEM Green/Black - KX 450F 8415900001

    POLISPORT Radiator Cover - OEM Green/Black - KX 450F 8415900001

    POLISPORT

    $56.99
    Radiator covers are essential protection against debris, mud, and impact damage during aggressive riding—keeping your cooling system safe and your bike looking sharp. The POLISPORT radiator cover for KX 450F models delivers OEM-level fit and finish...
    05201729
    SKU:
    05201729
    Availability:
    Ships Same Business Day
    Weight:
    1.30 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • POLISPORT Side Panels - '14 - '16 OEM White - KXF 250/450 8416100001

    POLISPORT Side Panels - '14 - '16 OEM White - KXF 250/450 8416100001

    POLISPORT

    $56.99
    OEM side panels take a beating on the track and trail—cracks, scratches, and UV fade are inevitable. The POLISPORT side panels for your '14-'16 KXF 250/450 deliver the exact factory fit and appearance of stock components, but with superior durability and...
    05201730
    SKU:
    05201730
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • POLISPORT Side Panels - '13 OEM Black - KXF 250/450 8416100002

    POLISPORT Side Panels - '13 OEM Black - KXF 250/450 8416100002

    POLISPORT

    $56.99
    OEM plastic components take a beating on the track and trail, fading and cracking under UV exposure and impact. The POLISPORT Side Panels deliver the exact factory fit and appearance of original Kawasaki parts while offering superior durability and...
    05201731
    SKU:
    05201731
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • POLISPORT Radiator Cover - OEM Green/Black - KX 250F 8416900001

    POLISPORT Radiator Cover - OEM Green/Black - KX 250F 8416900001

    POLISPORT

    $56.99
    Your radiator is one of the most critical cooling components on your KX 250F, and it deserves protection from track debris, rocks, and impacts that can compromise its integrity. This OEM-specification Polisport radiator cover delivers genuine fit and...
    05201732
    SKU:
    05201732
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • POLISPORT Radiator Cover - OEM Green/Black - KX 85/100 8417300001

    POLISPORT Radiator Cover - OEM Green/Black - KX 85/100 8417300001

    POLISPORT

    $56.99
    Protect your KX 85/100 radiator from impact damage and track debris with the POLISPORT OEM radiator cover. This injection-molded component maintains factory fitment and aesthetics while delivering genuine durability during aggressive riding. The flexible...
    05201733
    SKU:
    05201733
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • POLISPORT Radiator Cover - OEM Green/Black - KX 450F 8418300001

    POLISPORT Radiator Cover - OEM Green/Black - KX 450F 8418300001

    POLISPORT

    $56.99
    Your KX 450F's radiator is critical to engine performance, and protecting it from impact and abrasion directly extends your bike's reliability on the track. The POLISPORT Radiator Cover combines injection-molded durability with OEM-spec fitment, ensuring...
    05201734
    SKU:
    05201734
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • On Sale
    POLISPORT Radiator Cover - OEM Green - KX 85/100 8425000011

    POLISPORT Radiator Cover - OEM Green - KX 85/100 8425000011

    POLISPORT

    MSRP: $54.99
    Now: $35.00
    Was: $54.99
    Radiator damage from track debris and trail impacts directly compromises cooling efficiency and bike longevity. This OEM Green Radiator Cover provides direct impact protection while maintaining factory aesthetics, keeping your KX 85/100 looking sharp and...
    05201735
    SKU:
    05201735
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    MSRP: $54.99
    Now: $35.00
    Was: $54.99
    Qty in Cart: 0
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    Price:
    MSRP: $54.99
    Now: $35.00
    Was: $54.99
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  • POLISPORT Side Panels - Black - KXF 250/450 8604800002

    POLISPORT Side Panels - Black - KXF 250/450 8604800002

    POLISPORT

    $56.99
    Stock plastic side panels take a beating on the track and trail—cracks, fading, and cosmetic damage are inevitable. POLISPORT side panels deliver OEM-accurate fitment with superior impact resistance and color retention, giving you a factory-fresh...
    05201739
    SKU:
    05201739
    Availability:
    Ships Same Business Day
    Weight:
    2.30 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • POLISPORT Side Panels - Black/Green - KXF 250/450 8604800003

    POLISPORT Side Panels - Black/Green - KXF 250/450 8604800003

    POLISPORT

    $56.99
    Stock side panels take a beating on the track and trail—UV exposure, impacts, and abrasion quickly fade and crack OEM plastic. POLISPORT side panels deliver the exact fit and appearance of factory components while offering superior impact and abrasion...
    05201740
    SKU:
    05201740
    Availability:
    Ships Same Business Day
    Weight:
    1.25 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $56.99
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  • POLISPORT Side Panels - OEM White - KX 85/100 8607100002

    POLISPORT Side Panels - OEM White - KX 85/100 8607100002

    POLISPORT

    $56.99
    Stock plastic side panels take a beating on the track and trail—cracks, scuffs, and UV fade are inevitable. POLISPORT's injection-molded replacements deliver OEM-exact fitment with superior durability and impact resistance, keeping your KX looking sharp...
    05201741
    SKU:
    05201741
    Availability:
    Ships Same Business Day
    Weight:
    1.04 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • POLISPORT Side Panels - OEM White - KXF 250/450 8608200002

    POLISPORT Side Panels - OEM White - KXF 250/450 8608200002

    POLISPORT

    $56.99
    Stock plastic side panels take a beating on the track and trail—cracks, fading, and scuffs compromise both aesthetics and protection. The POLISPORT OEM White Side Panels deliver factory-spec fitment and durability without the OEM price tag, giving your...
    05201742
    SKU:
    05201742
    Availability:
    Ships Same Business Day
    Weight:
    0.92 LBS
    $56.99
    Qty in Cart: 0
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    $56.99
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  • POLISPORT Number Plate - White - KX 250F/450F 8656800002

    POLISPORT Number Plate - White - KX 250F/450F 8656800002

    POLISPORT

    $30.99
    A damaged or worn number plate compromises both the appearance and resale value of your KX 250F/450F. This Polisport replacement delivers factory-spec fit and finish without the OEM price tag, allowing you to maintain your bike's clean aesthetic while...
    05201744
    SKU:
    05201744
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    $30.99
    Qty in Cart: 0
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    Price:
    $30.99
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  • POLISPORT Number Plate - White - KX 250F/450F 8659200002

    POLISPORT Number Plate - White - KX 250F/450F 8659200002

    POLISPORT

    $30.99
    Whether you're replacing a cracked number plate or refreshing your bike's front end after a crash, this POLISPORT white number plate delivers OEM-level fitment without the premium price tag. Injection-molded for impact resistance and durability on...
    05201745
    SKU:
    05201745
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    $30.99
    Qty in Cart: 0
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    Price:
    $30.99
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  • POLISPORT Radiator Cover - OEM Yellow - RM 85 8410700001

    POLISPORT Radiator Cover - OEM Yellow - RM 85 8410700001

    POLISPORT

    $27.99
    Factory radiator covers take a beating from dust, debris, and impact damage on the track and trail—and OEM replacements can drain your budget fast. The POLISPORT Radiator Cover delivers genuine OEM fitment and durability at a fraction of the cost, with...
    05201748
    SKU:
    05201748
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    Qty in Cart: 0
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    $27.99
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  • POLISPORT Radiator Cover - Black/Yellow - RMZ 450 8412500005

    POLISPORT Radiator Cover - Black/Yellow - RMZ 450 8412500005

    POLISPORT

    $56.99
    OEM radiator covers take a beating on the track and trail—impacts, UV exposure, and abrasion wear them down fast. The POLISPORT Radiator Cover for RMZ 450 delivers OEM-level fitment with superior durability, using injection-molded propylene that resists...
    05201759
    SKU:
    05201759
    Availability:
    Ships Same Business Day
    Weight:
    1.70 LBS
    $56.99
    Qty in Cart: 0
    Quantity:
    Price:
    $56.99
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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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