Dirt Bike Engine Seals - Orings and Kits

A leaking countershaft seal can compromise your transmission's integrity and lead to costly damage if left unaddressed. This complete kit eliminates the guesswork by bundling everything needed for a proper repair in one purchase. Get back to reliable...

A leaking countershaft seal will compromise your transmission's integrity and lead to costly damage if left unaddressed. This complete kit eliminates the guesswork by bundling every component needed for a proper repair in one order. Get your drivetrain...

Engine seals are critical to maintaining proper lubrication and preventing oil leakage that can compromise performance and damage internal components. This comprehensive MOOSE Racing Oil Seal Set gives you every crankshaft and engine seal needed for a...

Engine seals are critical wear items that prevent oil leakage and maintain crankcase pressure—two factors directly affecting performance and engine longevity. The MOOSE RACING Oil Seal Set delivers OEM-quality seals engineered specifically for the YZ 65,...

Preventive maintenance is critical for high-performance watercraft engines, and oil seal degradation is a silent threat to engine longevity. The WINDEROSA Oil Seal (622118) is engineered to maintain compression and prevent oil leakage in GP1200 and...

Oil seals are critical to maintaining proper lubrication and preventing fluid contamination in your Sea Doo jetboat engine. A worn or degraded seal allows oil to escape and water to infiltrate, leading to accelerated wear, corrosion, and potential...

An oil seal failure can quickly turn a minor leak into catastrophic engine damage, especially in high-performance applications where reliability is non-negotiable. The WINDEROSA 622206 oil seal is engineered to maintain a tight, consistent barrier...

Oil seals are critical to engine longevity—they prevent oil leakage from your crankshaft and transmission while maintaining pressure in vital engine compartments. A compromised seal leads to oil loss, potential bearing damage, and catastrophic engine...

Oil seal failure is one of the most common causes of fluid leakage and contamination in high-performance engines, compromising both reliability and longevity. The WINDEROSA 622404 is a direct OEM-specification replacement that restores a proper seal at...

Engine oil seal failure is a silent threat to watercraft reliability—once they degrade, internal leakage and contamination follow quickly. The WINDEROSA Crankshaft Oil Seal Set 622203 replaces both the magneto-side and PTO-side seals in one comprehensive...

Oil seal degradation is one of the most common culprits behind water intrusion, power loss, and costly engine damage in watercraft. The WINDEROSA Crankshaft Oil Seal Set 622201 replaces worn magneto and PTO side seals with OEM-quality components,...

Oil seals are critical to engine longevity—they prevent fluid leakage that compromises bearing lubrication and engine performance. The WINDEROSA Oil Seal (622117) is engineered to maintain a tight barrier in your WaveRunner, protecting against coolant...

Front sprocket replacements require more than just swapping out the sprocket itself—you need reliable fastening hardware to ensure the countershaft stays secure under load. The MOOSE RACING Washer/Snap Ring Counter Shaft 25-6012 provides the...

A compromised crank seal accelerates wear on your bottom end and invites contamination into critical bearing surfaces—a direct path to catastrophic engine failure. This PROX kit delivers OEM-quality seals engineered for the CRF250R, ensuring a complete,...

A worn or leaking crank seal will compromise engine compression and allow contamination into your bottom end—both costly problems that compromise reliability and performance. The PROX Crank Seal Kit includes every seal required for a complete crank...

A worn crankshaft seal can silently undermine engine reliability, leading to oil leakage and costly damage that sidelined racers can't afford. The PROX Crank Seal Kit RM250 delivers OEM-quality seals in one complete package, eliminating guesswork during...

A compromised crank seal allows oil seepage that degrades engine performance and can lead to catastrophic failure if left unaddressed. The PROX PRO-X Crank Seal Kit 42.2102 delivers OEM-quality seals in a complete package, eliminating the need to source...

A worn or leaking crankshaft seal can compromise engine integrity and lead to costly oil loss and contamination. The PROX PRO-X Crank Seal Kit 42.2319 delivers OEM-quality seals engineered to restore proper crankshaft sealing during a complete rebuild,...

A worn crank seal compromises engine integrity and invites oil leakage that compounds over time. This complete kit eliminates guesswork during crank rebuilds, delivering OEM-specification seals across all critical pressure points. Whether you're...

A compromised crank seal can silently undermine your engine's reliability, causing oil weeping, contamination, and catastrophic failure if left unaddressed. The PROX PRO-X Crank Seal Kit 42.2221 delivers complete, OEM-quality seals engineered to restore...