Upgrade your outdated cast rocker arms with this new Forged Rocker Arm Kit that is standard equipment on Sea-Doo 325 models. The original cast rocker arms are known for breaking on modified craft. Stronger, forged rocker arms provide a better alternative when running higher RPM and aftermarket camsh...

Upgrade your 2005 and older 4-Tec motor to the new style bolt in ignition coils used on the 2016 Sea Doo 300 HP watercraft. This kit contains the following all original Sea Doo OEM components 3 x Ignition Coils with coil cap Seals 3 x Coil connectors with pins and connector seals. (used to rep...

Upgrade your 2006 and newer 4-Tec motor to the new style bolt in ignition coils used on the 2016 Sea Doo 300 HP watercraft. This kit contains the following all original Sea Doo OEM components 3 x Ignition Coils with coil cap Seals 3 x Coil connectors with pins and connector seals. (used to rep...

Our ultra high strength cylinder head stud kit is essential equipment when upgrading internal components on your high boost Sea-Doo engine. Precision machined from premium grade 8740 alloy and heat treated to exacting tolerances, these studs dramatically increase reliability & ease of maintenance. ...

Genuine Sea Doo replacement head bolts (set of 8)...

The rocker shaft bolts must be replaced on a Sea Doo 4-Tec Engine any time they are removed. These are the genuine OEM Sea Doo rocker shaft bolt replacements (set of 6)...

Original Equipment Cylinder Head Gasket for Sea-Doo 1630 engines....

Three layer stainless construction for durability & corrosion resistance. Viton coated & embossed surfaces for maximum sealing between head and cylinder block. Unique design promotes even torque load across sealing surface & requires no re-torque. Our Pro-Series Cylinder Head Gaskets were dev...

Genuine Sea Doo 4-Tec head gasket. The head gasket must be replaced any time the head is removed....

Introducing the ultimate performance camshaft for Sea-Doo engines! Gain 350-450 RPM, 3-5 MPH, and arm stretching acceleration throughout the entire power band with the Calas Performance Billet Camshaft. This cam is precision CNC machined from high strength steel and heat treated for maximum durabili...

Our precision ground racing camshaft delivers a serious gain in horsepower & torque with its optimized valve lift profile. Reduced weight for quicker revving. Billet steel construction provides superior strength and torsional stability. Use with Riva Valve Train Upgrade Kit for maximum reliability. ...

Our overhead Valve Compression Tool allows easy removal of valve springs and keepers without removing cylinder head. Includes compression adapter to pressurize cylinder keeping valves in place during removal of stock springs and keepers.For use with all Sea-Doo 4-TEC 1503 engines. tool instructi...

Designed to be a direct drop-in replacement for the OEM valves and requires no machining of cylinder head. Sold in sets of 12 (6 Intake/6 Exhaust). Includes high strength single groove valve locks. Stronger & lighter than stock valves. Intake valves weigh 42 grams. Exhaust val...

Calas Performance Sea-Doo retainers are manufactured with high quality military certified Titanium alloy and are CNC machined for a tight fit. Calas Performance Dual Valve Springs are computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of ...

The Calas Performance Sea-Doo Titanium Retainer set includes twelve retainers that are precision machined with high quality military certified Titanium alloy. These retainers are extremely strong, lightweight and add improved wear resistance. The retainers are made to fit OEM factory valve spring se...

These kits are made exclusively by Supertech for the Sea-Doo 4-Tec engines. Specifications: 85lb seat pressure Outer Spring OD: 26.60mm / ID: 19.60mm Inner Spring OD: 19.40mm / ID:14.20mm Seat Pressure: 85 Maximum Recommended Lift: 12+ Coil Bind MM: 19.00 Includes 6 OE rocker arm shaf...

Our Valve Retainer Upgrade Kit increases the reliability of your engine by reducing the possibility of valve float at high rpm. Includes 12 lightweight, precision-machined titanium valve retainers and 6 OE rocker arm shaft bolts that must be replaced during installation. Key Features: Ligh...

Our Valve Train Upgrade Kit increases the reliability of your modified engine by reducing the possibility of valve float at high rpm. Includes lightweight, precision-machined titanium valve retainers, racing valve springs, base washers and OE rocker arm shaft bolts that must be replaced during insta...

Our Valve Retainer Upgrade Kit increases the reliability of your engine by reducing the possibility of valve float at high rpm. Includes 12 lightweight, precision-machined titanium valve retainers and 6 OE rocker arm shaft bolts that must be replaced during installation. A must for IJSBA & APBA Stoc...

Full set of 12 CNC machined retainers manufactured from high strength and hardened aerospace certified titanium alloy. Designed to add strength while offering weight reduction, all of our titanium retainers are finished to precise tolerances. A must for any Sea-Doo looking to rev over 8400 rpm ...

RIVA High Performance Valve Kits are engineered to improve reliability and performance in high-boost supercharged & turbocharged engines. Intake valves are built from high grade EV-8 (24-4N) stainless that is extremely resistant to corrosion. Exhaust valves are built from inconel alloy (IN-751) that...

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RIVA High Performance Valve Kits are engineered to improve reliability and performance in high-boost supercharged & turbocharged engines. Intake valves are built from high grade EV-8 (24-4N) stainless that is extremely resistant to corrosion. Exhaust valves are built from inconel alloy (IN-751) that...

Intake Our race series valve is forged from an EV-8 alloy then heat treated and stress relieved with a solution style heat treat process for better control through and through. This process produces a better overall product with proper material grain flow that results in superior longevity & re...

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Eastside Custom valve guides use a high quality bronze alloy that has excellent wear resistance and thermal properties. Our valve guides are engineered for extreme heat, and rpm, and outlast any other bronze valve guide on the market. Valve guides need to be honed to valve size....

Our Sea-Doo Performance Valve Guides provide greatly improved durability for performance applications. Key Features: Constructed of Aluminum/Bronze/Nickle Alloy. Dramatically improves reliability in high boost & high RPM applications. Superior material reduces friction and improves...

Our Sea-Doo Performance Valve Seats deliver the bulletproof reliability demanded by top engine builders. Key Features: Constructed of Aluminum/Bronze/Nickle Alloy. Dramatically improves reliability in high boost & high RPM applications. Durable sealing surface. Improved heat d...

Replace your worn out OEM Seadoo valve seals with a set of Premium Viton seals. These seals are made from high quality Viton rubber, which offers exceptional lubrication of the valve stems and guides while keeping excessive amounts of oil from entering the combustion chamber, and can withstand the h...

Head casting for Sea Doo 4-Tec motors. Includes valve seats and guides. Valve seals, spring and retainer kits and valve kits are available here in our online store....

Part number RS19050-VK-645 $9.49 FOR EACH VALVE...

Single (1) valve Exhaust...

Single (1) valve Intake...