Dirt Bike Engine
Dirt Bike Engine Parts at JJ Motorsports
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. 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 to keep your engine running at peak efficiency on the track or trails.
Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.
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
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MOOSE RACING Complete Gasket and Oil Seal Kit 811372
MOOSE RACING
$191.24A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work or force you to source components piecemeal. This kit eliminates guesswork by supplying all OEM-equivalent gaskets and oil seals in one...09345368- SKU:
- 09345368
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
$191.24 -
MOOSE RACING Oil Filter DT-10-35
MOOSE RACING
$9.95Engine protection starts with filtration. The MOOSE RACING Oil Filter DT-10-35 delivers the micron-level particle capture your engine demands, safeguarding critical components from wear and contamination. Whether you're running conventional or synthetic...07120357- SKU:
- 07120357
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- PAPER
- MICRON RATING:
- 10 MICRONS
- PRODUCT NAME:
- OIL FILTER
- STYLE:
- STANDARD
$9.95 -
On Sale
Wiseco Piston Kit 48.50mm for Suzuki RM85 2002-2023 806M04850
WISECO
MSRP: $119.95Now: $102.00Was: $119.95The Wiseco Piston Kit 806M04850 is engineered for RM85 riders who demand reliability through hard use. Whether you're rebuilding after a top-end failure or upgrading to OEM+ performance, this precision-machined piston delivers consistent power and...09101248- SKU:
- 09101248
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 48.50 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 84.7 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 46.80 MM
- UNITS:
- EACH
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
MSRP: $119.95Now: $102.00Was: $119.95 -
On Sale
Wiseco Yamaha Blaster 200 1988-2006 Piston Kit with Gaskets PK1098
WISECO
MSRP: $219.95Now: $187.00Was: $219.95A worn piston kit robs your Blaster 200 of power and reliability—especially in a high-revving 2-cycle engine where tolerances matter. The Wiseco PK1098 delivers a complete, matched top-end assembly engineered specifically for your machine, eliminating...09030453- SKU:
- 09030453
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- BORE - OVERSIZE:
- +2,25 MM
- BORE SIZE METRIC:
- 68.25 MM
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE METRIC:
- +2.25 MM
- DISPLACEMENT:
- 195 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- PISTON DIAMETER METRIC:
- 68.20 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 57.00 MM
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
MSRP: $219.95Now: $187.00Was: $219.95Qty in Cart: 0Quantity:Price:MSRP: $219.95Now: $187.00Was: $219.95Subtotal: -
On Sale
Wiseco Piston Kit with Gaskets for Yamaha YFS200 Blaster 1988-2006 66.75mm PK1092
WISECO
MSRP: $204.95Now: $174.00Was: $204.95If your YFS200 Blaster is showing signs of wear—loss of compression, blow-by, or sluggish throttle response—a piston kit refresh is one of the most direct ways to restore power and reliability. Wiseco's forged pistons are engineered for the extreme...09030454- SKU:
- 09030454
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE SIZE METRIC:
- 66.75 MM
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 57.00 MM
- BORE - OVERSIZE:
- +0,75 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.75 MM
- DISPLACEMENT:
- 195 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- PISTON DIAMETER METRIC:
- 66.70 MM
- PRODUCT NAME:
- REBUILD KIT
MSRP: $204.95Now: $174.00Was: $204.95 -
SHINDY Needle Bearing - 16 mm x 20 mm x 19 mm 10-352
SHINDY
$9.95Piston pin needle bearings are critical to maintaining smooth reciprocal motion and preventing premature wear in high-RPM applications. This SHINDY precision bearing delivers the tight tolerances and consistent performance required for reliable engine...NB1456- SKU:
- NB1456
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- PISTON
- LENGTH:
- 19 MM
- PRODUCT NAME:
- BEARING
- OUTSIDE DIAMETER METRIC:
- 20 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- INSIDE DIAMETER:
- 16 MM
- INSIDE DIAMETER METRIC:
- 16 MM
- OUTSIDE DIAMETER:
- 20 MM
- LENGTH METRIC:
- 19 MM
- TYPE:
- NEEDLE
$9.95 -
SHINDY Needle Bearing - 18 mm x 22 mm x 22 mm 10-001
SHINDY
$9.95Piston pin needle bearings are critical to engine reliability, especially in high-RPM racing applications where precision tolerances and durability directly impact performance. This SHINDY bearing delivers the exact specifications needed for smooth,...NB1457- SKU:
- NB1457
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- LENGTH METRIC:
- 22 MM
- RIDING STYLE:
- UTV
- LENGTH:
- 22 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER:
- 18 MM
- INSIDE DIAMETER METRIC:
- 18 MM
- OUTSIDE DIAMETER:
- 22 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- APPLICATION:
- PISTON
- OUTSIDE DIAMETER METRIC:
- 22 MM
- TYPE:
- NEEDLE
$9.95 -
SHINDY Needle Bearing - 15 mm x 19 mm x 17 mm 10-053
SHINDY
$8.95Piston pin needle bearings are critical components that directly impact engine reliability and performance—especially under high RPM conditions where precision and durability are non-negotiable. The SHINDY 15mm x 19mm x 17mm bearing delivers the tight...NB1458- SKU:
- NB1458
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- INSIDE DIAMETER:
- 15 MM
- INSIDE DIAMETER METRIC:
- 15 MM
- LENGTH:
- 17 MM
- OUTSIDE DIAMETER METRIC:
- 19 MM
- UNITS:
- EACH
- LENGTH METRIC:
- 17 MM
- OUTSIDE DIAMETER:
- 19 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- PISTON
- TYPE:
- NEEDLE
$8.95 -
SHINDY Needle Bearing - 15 mm x 19 mm x 20 mm 10-152
SHINDY
$9.95Piston pin needle bearings are critical to engine reliability, especially in high-RPM or forced-induction applications where precision clearances are non-negotiable. The SHINDY 10-152 is manufactured to exacting tolerances, ensuring smooth articulation...NB1459- SKU:
- NB1459
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- LENGTH:
- 20 MM
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER:
- 19 MM
- PRODUCT NAME:
- BEARING
- INSIDE DIAMETER:
- 15 MM
- INSIDE DIAMETER METRIC:
- 15 MM
- OUTSIDE DIAMETER METRIC:
- 19 MM
- UNITS:
- EACH
- APPLICATION:
- PISTON
- LENGTH METRIC:
- 20 MM
- TYPE:
- NEEDLE
$9.95 -
SHINDY Needle Bearing - 15 mm x 20 mm x 18 mm 10-354
SHINDY
$14.95Piston pin needle bearings are critical to engine reliability and performance—they handle the precise lateral loads that occur thousands of times per minute during combustion cycles. The SHINDY 10-354 delivers the precision tolerances and durability...NB1460- SKU:
- NB1460
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- LENGTH:
- 18 MM
- OUTSIDE DIAMETER:
- 20 MM
- INSIDE DIAMETER:
- 15 MM
- INSIDE DIAMETER METRIC:
- 15 MM
- LENGTH METRIC:
- 18 MM
- OUTSIDE DIAMETER METRIC:
- 20 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- PISTON
- PRODUCT NAME:
- BEARING
- TYPE:
- NEEDLE
$14.95 -
SHINDY Needle Bearing - 14 mm x 18 mm x 17.5 mm 10-252
SHINDY
$8.95Piston pin needle bearings are critical to engine reliability—they manage radial loads and reduce friction at one of the most dynamic points in your engine's combustion cycle. A worn or damaged bearing increases piston slap, generates heat, and...NB1462- SKU:
- NB1462
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 18 MM
- TYPE:
- NEEDLE
- INSIDE DIAMETER:
- 14 MM
- INSIDE DIAMETER METRIC:
- 14 MM
- LENGTH:
- 17,5 MM
- LENGTH METRIC:
- 17.5 MM
- UNITS:
- EACH
- APPLICATION:
- PISTON
- OUTSIDE DIAMETER:
- 18 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
$8.95 -
SHINDY Needle Bearing - 14 mm x 18 mm x 16.5 mm 10-353
SHINDY
$7.95Piston pin needle bearings are critical to engine reliability, especially in high-RPM and forced-induction applications where precision tolerances directly impact performance and longevity. SHINDY's 14 mm x 18 mm x 16.5 mm needle bearing delivers the...NB1464- SKU:
- NB1464
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- INSIDE DIAMETER METRIC:
- 14 MM
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER:
- 18 MM
- PRODUCT NAME:
- BEARING
- LENGTH METRIC:
- 16.5 MM
- OUTSIDE DIAMETER METRIC:
- 18 MM
- TYPE:
- NEEDLE
- UNITS:
- EACH
- APPLICATION:
- PISTON
- INSIDE DIAMETER:
- 14 MM
- LENGTH:
- 16,5 MM
$7.95 -
SHINDY Piston Pin Bearing 10-351
SHINDY
$10.95Piston pin needle bearings are critical to engine reliability, directly affecting crankshaft longevity and combustion efficiency. The SHINDY 10-351 delivers precision manufacturing with minimal radial clearance, ensuring smooth pin articulation under...09240006- SKU:
- 09240006
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- PISTON
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 23 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- LENGTH:
- 22 MM
- OUTSIDE DIAMETER:
- 23 MM
- TYPE:
- NEEDLE
- UNITS:
- EACH
- INSIDE DIAMETER:
- 18 MM
- INSIDE DIAMETER METRIC:
- 18 MM
- LENGTH METRIC:
- 22 MM
$10.95 -
MOOSE RACING Top End Gasket Kit - YZ 250 810663
MOOSE RACING
$27.72A top-end rebuild demands precision gaskets and seals that won't compromise engine integrity or cost you a fortune. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals and a complete set of gaskets—all manufactured in the U.S.A.—at a fraction...M810663- SKU:
- M810663
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$27.72Qty in Cart: 0Quantity:Price:$27.72Subtotal: -
MOOSE RACING Top End Gasket Kit - YZ 250 810664
MOOSE RACING
$21.90A top-end rebuild demands precision—gaskets that seal tight, materials that last, and the confidence that every component fits exactly as engineered. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals at a fraction of the cost, letting you...M810664- SKU:
- M810664
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$21.90 -
MOOSE RACING Top End Gasket Kit - YZ 250 810665
MOOSE RACING
$29.14A top-end rebuild demands precision seals and gaskets that won't compromise your engine's integrity or performance. The MOOSE RACING Top End Gasket Kit delivers OEM-quality replacement seals at a fraction of the cost, allowing you to approach your YZ 250...M810665- SKU:
- M810665
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$29.14 -
MOOSE RACING Top End Gasket Kit - YZ 250 810666
MOOSE RACING
$36.47A top-end rebuild demands precision—every gasket, seal, and O-ring must fit perfectly to maintain compression, prevent leaks, and deliver consistent performance. The MOOSE RACING Top End Gasket Kit gives you OEM-quality seals at a fraction of the cost,...M810666- SKU:
- M810666
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
$36.47 -
MOOSE RACING Top End Gasket Kit - YZ 250 810668
MOOSE RACING
$36.47When you're rebuilding a YZ 250 top end, gasket and seal integrity directly impacts compression, oil containment, and overall engine reliability. The MOOSE RACING Top End Gasket Kit eliminates the guesswork with a complete, U.S.-manufactured solution...M810668- SKU:
- M810668
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$36.47 -
MOOSE RACING Top End Gasket Kit - YZ 250 810670
MOOSE RACING
$35.14A top-end rebuild demands precision—using OEM-quality seals and gaskets ensures your YZ 250 runs reliably without the premium OEM price tag. This complete kit eliminates the guesswork of sourcing individual components, giving you confidence that every...M810670- SKU:
- M810670
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$35.14 -
MOOSE RACING Motor Gasket Kit with Seal - 600 Grizzly 811833
MOOSE RACING
$178.30A complete engine and transmission rebuild demands precision-fit gaskets and seals—compromising on these components invites leaks, contamination, and catastrophic failure. The MOOSE RACING Motor Gasket Kit eliminates guesswork by bundling every gasket...M811833- SKU:
- M811833
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- TYPE:
- COMPLETE
- RIDING STYLE:
- ATV
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$178.30
