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Dirt Bike Engine Parts & Accessories

Trail Tech Lighting Flywheel Kit - Dirt Bike Engine Parts & Accessories Trail Tech Lighting Flywheel Kit SALE $174.99 Save 10%
$5
Vortex Oil Filter - Dirt Bike Engine Parts & Accessories Vortex Oil Filter SALE $6.79 - 12.74 Save up to 15%
All Balls Counter Shaft Seal Kit - Dirt Bike Engine Parts & Accessories All Balls Counter Shaft Seal Kit $13.99 - 21.99
4.9 out of 5 stars

Mishimoto Aluminum Radiator - Dirt Bike Engine Parts & Accessories Mishimoto Aluminum Radiator CLEARANCE $119.77 - 229.77 Save up to 40%
3.7 out of 5 stars
$15
QuadBoss Starter Motor - Dirt Bike Engine Parts & Accessories QuadBoss Starter Motor SALE $71.99 - 289.99 Save up to 9%
2.3 out of 5 stars
$10
Trail Tech Universal Full Wave Regulator / Rectifier - Dirt Bike Engine Parts & Accessories Trail Tech Universal Full Wave Regulator / Rectifier SALE $53.99 Save 10%

HOTCAMS Valve Spring Kit - Dirt Bike Engine Parts & Accessories HOTCAMS Valve Spring Kit SALE $135.99 - 159.99 Save up to 20%
5 out of 5 stars
$5
FilGuard Stainless Steel Oil Filter - Dirt Bike Engine Parts & Accessories FilGuard Stainless Steel Oil Filter SALE $24.99 Save 17%
3 out of 5 stars
Pro Circuit Valve Springs - Dirt Bike Engine Parts & Accessories Pro Circuit Valve Springs SALE $69.99 - 296.99 Save up to 13%
$10

Barnett Heavy Duty Clutch Springs - Dirt Bike Engine Parts & Accessories Barnett Heavy Duty Clutch Springs CLEARANCE $1.77 - 22.99 Save up to 88%
4.9 out of 5 stars
WPS Starter Motor - Dirt Bike Engine Parts & Accessories WPS Starter Motor SALE $58.99 - 187.99 Save up to 9%
5 out of 5 stars
$5
Dr. D Radiator Lowering Kit - Dirt Bike Engine Parts & Accessories Dr. D Radiator Lowering Kit SALE $85.99 - 102.99 Save up to 14%
2.2 out of 5 stars
$5

Kibblewhite Exhaust Tappets - Dirt Bike Engine Parts & Accessories Kibblewhite Exhaust Tappets $58.99 - 142.99
$5
JD Jetting EFI Handlebar Ignition Map Switch - Dirt Bike Engine Parts & Accessories JD Jetting EFI Handlebar Ignition Map Switch $69.99
Wiseco Stainless Steel Intake Valve - Dirt Bike Engine Parts & Accessories Wiseco Stainless Steel Intake Valve $16.99 - 28.99

Spectro Assembly Lube - Dirt Bike Engine Parts & Accessories Spectro Assembly Lube $3.99
5 out of 5 stars
Wiseco Needle Bearing - Dirt Bike Engine Parts & Accessories Wiseco Needle Bearing SALE $13.99 - 16.99 Save up to 13%
4.7 out of 5 stars
Ride Engineering Timing Plugs - Dirt Bike Engine Parts & Accessories Ride Engineering Timing Plugs $41.99 - 44.99
4.6 out of 5 stars

Faction MX Valve Spring Kit - Dirt Bike Engine Parts & Accessories Faction MX Valve Spring Kit CLEARANCE $132.77 Save 50%
$10
Wiseco Titanium Exhaust Valve - Dirt Bike Engine Parts & Accessories Wiseco Titanium Exhaust Valve SALE $114.99 - 129.99 Save up to 11%
$5
Wiseco Titanium Intake Valve - Dirt Bike Engine Parts & Accessories Wiseco Titanium Intake Valve SALE $114.99 - 129.99 Save up to 11%
5 out of 5 stars
$5

Trail Tech Full Wave Regulator / Rectifier - Dirt Bike Engine Parts & Accessories Trail Tech Full Wave Regulator / Rectifier SALE $49.99 - 53.99 Save up to 11%
Turner Performance Products Engine Timing Plugs - Dirt Bike Engine Parts & Accessories Turner Performance Products Engine Timing Plugs CLEARANCE $23.99 - 34.99 Save up to 40%
4.6 out of 5 stars
Moto Hose Crankcase Breather Hose - Dirt Bike Engine Parts & Accessories Moto Hose Crankcase Breather Hose $29.99
5 out of 5 stars

Trail Tech TT0 M8 Bolt Mount - Dirt Bike Engine Parts & Accessories Trail Tech TT0 M8 Bolt Mount $6.99
HOT RODS Cam Chain - Dirt Bike Engine Parts & Accessories HOT RODS Cam Chain SALE $49.99 - 89.99 Save up to 9%
GYTR 27mm Timing Plug - Dirt Bike Engine Parts & Accessories GYTR 27mm Timing Plug $28.73

HOT RODS Crank Bearings Kit - Dirt Bike Engine Parts & Accessories HOT RODS Crank Bearings Kit SALE $55.99 Save 20%
3.6 out of 5 stars
Vesrah Racing Oil Filter - Dirt Bike Engine Parts & Accessories Vesrah Racing Oil Filter $4.99 - 10.99
4 out of 5 stars
Wiseco Clutch Basket Cushions - Dirt Bike Engine Parts & Accessories Wiseco Clutch Basket Cushions SALE $26.99 Save 10%

Trail Tech Ignition Map Switch - Dirt Bike Engine Parts & Accessories Trail Tech Ignition Map Switch SALE $35.99 Save 10%
GYTR Flywheel + 4.83 Oz. - Dirt Bike Engine Parts & Accessories GYTR Flywheel + 4.83 Oz. $107.49
5 out of 5 stars
Kibblewhite Exhaust Valve Seals - Dirt Bike Engine Parts & Accessories Kibblewhite Exhaust Valve Seals $5.99 - 10.99

Rekluse Slave Cylinder Guard - Dirt Bike Engine Parts & Accessories Rekluse Slave Cylinder Guard $50.00
5 out of 5 stars
Hinson Clutch Basket Cushions - Dirt Bike Engine Parts & Accessories Hinson Clutch Basket Cushions SALE $26.99 - 44.99 Save up to 10%
4 out of 5 stars
Works Connection Radiator Cages - Dirt Bike Engine Parts & Accessories Works Connection Radiator Cages SALE $89.99 Save 10%
3.7 out of 5 stars
$5

Pro X Crank Seals - Dirt Bike Engine Parts & Accessories Pro X Crank Seals $6.99 - 21.99
4.8 out of 5 stars
BikeMaster Aluminum Timing Degree Wheel - Dirt Bike Engine Parts & Accessories BikeMaster Aluminum Timing Degree Wheel SALE $11.99 Save 20%
Keihin 21 Series Pilot Jets - Dirt Bike Engine Parts & Accessories Keihin 21 Series Pilot Jets $20.99
4.7 out of 5 stars

NGK Iridium IX Spark Plugs - Dirt Bike Engine Parts & Accessories NGK Iridium IX Spark Plugs $10.99 - 19.99
4.5 out of 5 stars
Yoshimura Timing Inspection Plug Kit - Dirt Bike Engine Parts & Accessories Yoshimura Timing Inspection Plug Kit SALE $39.99 Save 9%
GYTR Timing Plug - Dirt Bike Engine Parts & Accessories GYTR Timing Plug $28.49 - 36.52
5 out of 5 stars

Works Connection Tach/Hour Meter Bracket With Spacer - Dirt Bike Engine Parts & Accessories Works Connection Tach/Hour Meter Bracket With Spacer $14.99
HOT RODS Counter Balancer Bearing Kit - Dirt Bike Engine Parts & Accessories HOT RODS Counter Balancer Bearing Kit $17.99 - 71.99
5 out of 5 stars
Yoshimura Oil Filler Plug - Dirt Bike Engine Parts & Accessories Yoshimura Oil Filler Plug SALE $21.56 - 26.99 Save up to 10%
4 out of 5 stars

QuadBoss Starter Repair Kit With Brush Holder - Dirt Bike Engine Parts & Accessories QuadBoss Starter Repair Kit With Brush Holder SALE $27.99 - 75.99 Save up to 10%
Kibblewhite Intake Tappets - Dirt Bike Engine Parts & Accessories Kibblewhite Intake Tappets $58.99 - 142.99
$5
Keihin Hex Main Jets - Dirt Bike Engine Parts & Accessories Keihin Hex Main Jets $20.99
3.7 out of 5 stars

QuadBoss Crankshaft Bearing and Seal Kit - Dirt Bike Engine Parts & Accessories QuadBoss Crankshaft Bearing and Seal Kit SALE $21.99 - 121.99 Save up to 8%
$5
TOKYO MODS Hi-Performance Clutch Springs - Dirt Bike Engine Parts & Accessories TOKYO MODS Hi-Performance Clutch Springs $59.99
HOT RODS Countershaft Seal Kit - Dirt Bike Engine Parts & Accessories HOT RODS Countershaft Seal Kit $6.99 - 22.99
4.5 out of 5 stars

Biker's Choice Oil Filter Wrench - Dirt Bike Engine Parts & Accessories Biker's Choice Oil Filter Wrench $7.99
NGK Spark Plug - Dirt Bike Engine Parts & Accessories NGK Spark Plug $2.99 - 19.99
5 out of 5 stars
Rekluse Core EXP Pressure Plate Spring - Dirt Bike Engine Parts & Accessories Rekluse Core EXP Pressure Plate Spring $10.00

NGK Big Bore Spark Plug CR8HSA - Dirt Bike Engine Parts & Accessories NGK Big Bore Spark Plug CR8HSA $2.50
Keihin Round Main Jets - Dirt Bike Engine Parts & Accessories Keihin Round Main Jets $16.99
2.5 out of 5 stars
MSR Clutch Guard - Dirt Bike Engine Parts & Accessories MSR Clutch Guard $29.95 - 39.95

Napalm Racing Hour Meter Mount - Dirt Bike Engine Parts & Accessories Napalm Racing Hour Meter Mount $14.99
3.3 out of 5 stars
BikeMaster Oil Filter - Dirt Bike Engine Parts & Accessories BikeMaster Oil Filter $2.99 - 9.99
4.6 out of 5 stars
Yoshimura TDC Inspection Plug - Dirt Bike Engine Parts & Accessories Yoshimura TDC Inspection Plug SALE $19.99 Save 17%

Most Recent Engine Parts and Accessories Reviews

Hinson Billet Clutch Basket Hinson Billet Clutch Basket Egonz - Orlando, FL 5 out of 5 stars Hinson Clutch Basket "Product fit perfect. Much lighter than the stock basket. Using the inner hub and pressure plate from Hinson removes quite a bit of weight from the bike and the basket and hub last a much longer amount of time. Definitely a must have addition if you ride your bike hard."
See all reviews for this product
GET C1 Hour Meter GET C1 Hour Meter Clark58 - New Wilmington 5 out of 5 stars GET Hour Meter "Great product and very durable. Mounted in minutes. No wires to deal with. Has holes for safety wire also. GET makes great products."
See all reviews for this product

Is your clutch slipping or dragging?

A dirt bike clutch can take a lot of abuse. A tiny strips of friction material and a few steel plates is all that holds the power of your bike, transferring it to your gearbox and on to your rear wheel. If they become worn or, worst case scenario, the friction pads separate, you'll need a new clutch. Generally, a new clutch will last quite a while even on race bikes, due to new materials being introduced like kevlar and carbon fiber. The Barnett Clutch Kit With Carbon Fiber Friction Plates is one of those, using carbon plates for longer life and better heat resistance. If you want the best of the best, check out the Rekluse Core EXP 2.0 Clutch Kit, which works by incorporating sliding wedges into an expanding friction disk. Wedges provid increased clutch performance at low to mid RPMs over traditional ball-bearing auto-clutches. They also offer a 30-day money back guarantee if it's not for you!

Freshen up your motor!

The simplest way to keep your dirt bike's engine running perfectly is to change the oil and spark plugs at regular intervals. MotoSport has a selection of dirt bike oil filters to fit your preference as well, from the industry leading K&N Oil Filters to Twin Air oil filters. We also have a wide range of tools to make changing your oil easier. We also carry the industry standard NGK Spark Plugs.

Did you see any leaks while you were doing the oil change? Take a few extra moments and replace any worn or leaking gaskets with fresh ones from MotoSport. We have Vesrah gasket kits that have all the seals, gaskets and O-Rings you need to rebuild your whole motor, or you can get specific and head over to out OEM Dirt Bike Parts section to get exactly what you're looking for.

If disaster has struck and your dirt bike motor has had a detrimental failure, don't worry, MotoSport has everything you need to rebuild it better, stronger and faster. We have dirt bike piston kits from Pro-X pistons and Wiseco, along with comlete Top & Bottom End Kits from Hot Rods if you need more than just a piston.