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Search within a riding style, select an option Begin typing to search, when autocomplete results are available use up and down arrows to review and enter to select. Selecting an options will take you to a new page. Touch device users, explore by touch.
My Ride: 2007 KTM 450XC
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Dirt Bike Engine Parts

Applied Refinements
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196 Results

Exact Fit
$7 Fast cash

Vertex
Complete Gasket Kit With Seals
$188.55
Sale
Save 5%
4 out of 5 stars (29) reviews
Exact Fit
$7 Fast cash

Vertex
Top End Gasket Kit
$89.18
Sale
Save 5%
5 out of 5 stars (16) reviews

NGK
Offroad Spark Plug
$4.28 - $24.69
Sale
Save 10%
5 out of 5 stars (66) reviews
Exact Fit

K&N
Cartridge Oil Filter
$11.99
4.5 out of 5 stars (145) reviews
Exact Fit
$1 Fast cash
Colors for Works Connection Oil Filler Plug
+5 more

Works Connection
Oil Filler Plug
$29.95
5 out of 5 stars (42) reviews
Exact Fit
$8 Fast cash

Wiseco
Pro-Lite 4-Stroke Piston
$255.99
Sale
Save 10%
5 out of 5 stars (69) reviews
Exact Fit
$3 Fast cash

HOTCAMS
Valve Shim Kit
$62.36
Sale
Save 34%
5 out of 5 stars (178) reviews
Exact Fit
$10 Fast cash

Vertex
Complete Gasket Kit
$167.31
Sale
Save 5%
5 out of 5 stars (8) reviews
Exact Fit
New
$4 Fast cash

All Balls
Carburetor Rebuild Kit
$50.99
Sale
Save 5%
4.5 out of 5 stars (184) reviews
Exact Fit
$7 Fast cash

Pro X
Complete Gasket Set
$193.93
Sale
Save 10%
Exact Fit
$3 Fast cash

Pro X
Top End Gasket Kit
$74.14
Sale
Save 10%
5 out of 5 stars (1) review
Exact Fit
$3 Fast cash

Vertex
Oil Seal Kit
$31.77
Sale
Save 30%
5 out of 5 stars (2) reviews
Exact Fit
New
$1 Fast cash

All Balls
Counter Shaft Seal Kit
$27.66
Sale
Save 5%
4 out of 5 stars (73) reviews
Exact Fit
$10 Fast cash

Wiseco
Pro-Lite High-Compression 4-Stroke Piston
$255.99
Sale
Save 10%
4.5 out of 5 stars (7) reviews
Exact Fit
New
$4 Fast cash

Vertex
Water Pump Rebuild Kit
$34.70
Sale
Save 5%
4 out of 5 stars (11) reviews
Exact Fit
Colors for ZETA Oil Filler Plug

ZETA
Oil Filler Plug
$15.95
4.5 out of 5 stars (6) reviews
Exact Fit
New
$2 Fast cash
Colors for Works Connection Oil Filter Cover
+3 more

Works Connection
Oil Filter Cover
$54.95
4 out of 5 stars (10) reviews
Exact Fit

Vertex
Inner Clutch Cover Gasket
$14.80
Sale
Save 5%
4 out of 5 stars (8) reviews
Exact Fit

Vertex
Exhaust Gasket Kit
$16.26
Sale
Save 5%
4 out of 5 stars (11) reviews
Exact Fit

Vertex
Outer Clutch Cover Gasket
$6.62
Sale
Save 5%
5 out of 5 stars (4) reviews
Exact Fit
New

Vertex
Ignition Cover Gasket
$8.55
Sale
Save 5%
Exact Fit
$2 Fast cash

JD Jetting
Jet Kit
$84.95
4.5 out of 5 stars (283) reviews
Exact Fit
$1 Fast cash

PC Racing
Flo Stainless Steel Oil Filter
$37.95
Sale
Save 5%
4.5 out of 5 stars (63) reviews
Exact Fit

FilGuard
Premium Oil Filter
$5.99
Sale
Save 20%
4.5 out of 5 stars (53) reviews
Exact Fit
$1 Fast cash
Colors for Ride Engineering Oil Filler Plug

Ride Engineering
Oil Filler Plug
$21.95
Sale
Save 8%
4 out of 5 stars (9) reviews
Exact Fit
$7 Fast cash

Rekluse
Clutch Cover
$189.00
4.5 out of 5 stars (7) reviews
Exact Fit
Colors for Turner Performance Products Fuel Mixture Screw

Turner Performance Products
Fuel Mixture Screw
$18.99
Sale
Save 17%
3.5 out of 5 stars (16) reviews
Exact Fit
New

Twin Air
Oil Filter
$10.99
5 out of 5 stars (13) reviews
Exact Fit
$1 Fast cash

All Balls
Carburetor Mid Body Gasket Kit
$29.14
Sale
Save 5%
4.5 out of 5 stars (5) reviews
Exact Fit
$1 Fast cash

All Balls
Accelerator Pump Rebuild Kit
$25.13
Sale
Save 5%
4.5 out of 5 stars (7) reviews
Exact Fit
New
$1 Fast cash

HOT RODS
Countershaft Seal Kit
$33.20
Sale
Save 5%
5 out of 5 stars (5) reviews
Exact Fit
New
$2 Fast cash

All Balls
Slave Cylinder Rebuild Kit - Clutch
$44.89
Sale
Save 5%
3 out of 5 stars (7) reviews
Exact Fit
$2 Fast cash

Vertex
Valve Cover Gasket
$8.71
Sale
Save 5%
1.5 out of 5 stars (7) reviews
Exact Fit

All Balls
Float Bowl Gasket
$11.76
Sale
Save 5%
Exact Fit
$11 Fast cash

Barnett
Clutch Kit
$214.41
4.5 out of 5 stars (155) reviews
Exact Fit
$8 Fast cash

Arrowhead
Starter Motor
$114.99
Sale
Save 32%
4.5 out of 5 stars (37) reviews
Exact Fit
$34 Fast cash

Rekluse
Core Manual TorqDrive
$1139.00
5 out of 5 stars (12) reviews
Exact Fit

All Balls
Extended Fuel Mixture Screw
$14.00
Sale
Save 5%
2.5 out of 5 stars (2) reviews
Exact Fit
$1 Fast cash

R&D
Flex Jet Fuel Mixture Screw
$29.66
Sale
Save 10%
4.5 out of 5 stars (99) reviews
Exact Fit
$4 Fast cash

Wiseco
Titanium Exhaust Valve
$156.99
Sale
Save 10%
5 out of 5 stars (1) review
Exact Fit

JD Jetting
Carburetor Fuel Screw Rebuild Kit
$8.95
5 out of 5 stars (1) review
Exact Fit

KTM PowerParts
Power Valve Adjustment Tool
$9.99
5 out of 5 stars (2) reviews
Exact Fit

JD Jetting
Fuel Mixture Screw Kit
$24.95
4.5 out of 5 stars (8) reviews
Exact Fit
$3 Fast cash

HOTCAMS
Valve - Exhaust
$43.16
Sale
Save 34%
1.5 out of 5 stars (2) reviews
Exact Fit

Moose
Starter Motor
$128.95
1 out of 5 stars (1) review
Exact Fit
$1 Fast cash

Turner Performance Products
Counter Shaft Seal Kit
$22.04
Sale
Save 10%
Exact Fit
Colors for ZETA Magnetic Drain Plug

ZETA
Magnetic Drain Plug
$10.95
3.5 out of 5 stars (4) reviews
Exact Fit
New
$8 Fast cash

Rick's Motorsport Electrics
Starter
$132.95
Exact Fit

BikeMaster
Oil Filter
$4.99
4.5 out of 5 stars (28) reviews
Exact Fit
$3 Fast cash
Colors for ZETA Oil Filter Cover

ZETA
Oil Filter Cover
$85.95
Exact Fit
$2 Fast cash

Twin Air
Oil Filter Cap
$53.99
Sale
Save 8%
3 out of 5 stars (19) reviews
Exact Fit
$8 Fast cash

QuadBoss
Starter Motor
$169.40
3.5 out of 5 stars (10) reviews
Exact Fit
$1 Fast cash

Pro Circuit
Fuel Mixture Screw
$26.96
Sale
Save 10%
Exact Fit
$1 Fast cash

KTM PowerParts
Factory Oil Filter Cover
$40.99
5 out of 5 stars (2) reviews
Exact Fit
$10 Fast cash

JE Pistons
Pro Series Piston
$324.99
Exact Fit

JD Jetting
Fuel Mixture Screw
$19.95
4 out of 5 stars (8) reviews
Exact Fit
$3 Fast cash

HOTCAMS
Valve - Intake
$27.16
Sale
Save 34%
3 out of 5 stars (1) review
Exact Fit

FilGuard
Stainless Steel Oil Filter
$20.77
Clearance
Save 31%
4 out of 5 stars (14) reviews
Exact Fit
$6 Fast cash

Electrosport
Stator
$161.10
Sale
Save 10%
3 out of 5 stars (18) reviews
Exact Fit
$1 Fast cash

Pro X
Clutch Slave Cylinder Rebuild Kit
$30.99
Sale
Save 11%

Dirt Bike Engine

Staying on top of general maintenance goes a long way towards the life of your 2-stroke or 4-stroke dirt bike engine. Eventually though, dirt bike engine parts break down, seize up and need replacing. MotoSport carries what you need for the simple jobs like oil changes or the major overhauls like a complete engine rebuild or replacing the clutch on your dirt bike. So, don't let a slipping clutch or blown motor ruin your planned ride day. We stock the top names in aftermarket dirt bike engine parts or stick with the proven performance of OEM. We carry a full line of dirt bike engine parts so you can grab everything you need right here. Replace the blown motor with a piston kit from Wiseco, Vertex or Wrench Rabbit among other popular brands. Smashed radiator? We'll get you back riding in no time. First things first, extend the life of the motor by keeping up on oil and filter changes. We've got gaskets to take care of that eventual leak, too. Find all the necessary dirt bike engine parts you need at MotoSport. If you need help finding a specific engine part for your dirt bike or have a question on upgrades, or using aftermarket verses OEM dirt bike engine parts, give one of our gearheads a call at 503-783-5645 who can help answer any questions, provide advice and even some instructions on installation.