Dirt Bike Engine Seals - Orings and Kits

Fuel injector seals degrade over time, leading to leaks, poor atomization, and inconsistent fuel delivery that compromises engine performance and efficiency. The WINDEROSA Injector O-Ring Kit 625011 provides OEM-quality replacement seals to restore...

Fuel injector o-ring degradation is a silent performance killer—dried, cracked, or worn seals cause fuel leakage, poor atomization, and rough idle that diagnostic tools often miss. The WINDEROSA Injector O-Ring Kit 625015 provides OEM-quality replacement...

Fuel injector leaks compromise both performance and reliability, often going undetected until they cause misfires or rough idle conditions. The WINDEROSA Injector O-Ring Kit 625016 provides OEM-quality sealing components that restore proper fuel...

Fuel injector o-ring degradation is one of the most common causes of fuel system leaks and performance loss in high-revving engines. The WINDEROSA Injector O-Ring Kit 625017 provides OEM-quality replacement seals that restore proper fuel atomization and...

Jet pump seal degradation is one of the most common causes of performance loss and cavitation in high-performance watercraft. The WINDEROSA Jet Pump Seal Kit 623117 provides OEM-quality replacement seals engineered to restore original pump efficiency,...

A worn jet pump seal kit is one of the fastest ways to lose performance and invite water into critical engine components. The WINDEROSA 623119 restores proper pump operation and sealing integrity, ensuring reliable watercraft performance whether you're...

Jet pump seal failure compromises cooling system integrity and leads to catastrophic engine damage—this kit delivers OEM-quality seals engineered to restore proper pump function and prevent costly coolant leaks. Whether you're rebuilding after wear or...

Jet pump seals are critical wear items that degrade from constant exposure to saltwater, sand, and high-velocity water flow. A failing seal kit allows coolant bypass, loss of pressure, and potential engine damage—making replacement essential for reliable...

Drive shaft seals are critical to preventing fluid leakage and protecting your drivetrain from contamination. The WINDEROSA 624113 kit provides OEM-quality replacement seals that restore proper compression and eliminate seepage without requiring complete...

Drive shaft seals are critical to preventing fluid leakage and protecting internal drivetrain components from contamination. A compromised seal can lead to rapid fluid loss, bearing damage, and catastrophic drivetrain failure. The WINDEROSA Drive Shaft...

Jet pump seal degradation compromises water flow efficiency and allows internal leakage that reduces thrust output and increases fuel consumption. The WINDEROSA Jet Pump Seal Kit 623802 restores OEM-spec sealing integrity with factory-matched materials...

Fuel injector o-ring degradation is a common culprit behind fuel leaks, rough idle, and poor atomization—problems that compromise both performance and reliability. The WINDEROSA Injector O-Ring Kit 625001 provides OEM-quality replacement seals that...

Fuel injector o-ring degradation is one of the most common causes of lean running conditions, fuel leaks, and rough idle—problems that compound quickly without attention. The WINDEROSA Injector O-Ring Kit 625002 provides OEM-equivalent replacement seals...

Fuel injector o-ring degradation is a common culprit behind lean conditions, hard starts, and fuel system leaks that compromise engine performance and reliability. The WINDEROSA Injector O-Ring Kit 625003 provides OEM-equivalent sealing surfaces to...

Front sprocket replacements demand precision fastening to maintain countershaft integrity and drivetrain reliability. MOOSE RACING's washer and snap ring kit eliminates the frustration of sourcing individual OEM fasteners and ensures you have the exact...

Countershaft fasteners are wear items that should be replaced during any front sprocket service to ensure proper retention and prevent catastrophic drivetrain failure. The MOOSE RACING Washer/Snap Ring Counter Shaft 25-6013 delivers OEM-equivalent...

Engine seal degradation is one of the most common causes of oil leaks, compression loss, and premature wear—yet many builders waste money on overpriced OEM alternatives. MOOSE RACING Motor Seals deliver genuine replacement quality at a fraction of the...

Engine and transmission seals are wear items that directly impact oil retention, pressure integrity, and overall drivetrain longevity. OEM replacement seals from Moose Racing give you factory-spec fit and durability without the dealership markup. This...

Engine seal degradation is one of the most common causes of oil leaks and internal wear in the TTR125. Rather than pay OEM prices for a complete gasket and seal kit, the MOOSE RACING Motor Seals deliver genuine OEM-equivalent performance at a fraction of...

Engine seals are critical wear items that directly impact compression, oil retention, and overall engine longevity. OEM replacement seals can strain your budget, but MOOSE Racing Motor Seals deliver genuine OEM-equivalent performance at a fraction of the...