Marine Valvetrain Parts
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COMP Cams®Xtreme Marine Camshaft (11-456-8)Xtreme Marine Camshaft (11-456-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and...Xtreme Marine CamshaftHydraulic roller: Good for jet boat with A or B impeller with 10:1 compression running river drags or bracket racing.$522.95 - COMP Cams®Xtreme Marine Camshaft (11-445-8)Xtreme Marine Camshaft (11-445-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and...Xtreme Marine CamshaftHydraulic roller: Good for inboard/outboard pleasure boats$522.95
- COMP Cams®Xtreme Marine Camshaft (11-252-4)Xtreme Marine Camshaft (11-252-4) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and...Xtreme Marine CamshaftHydraulic: for jet with B impeller, 10:1 compression, river drags, bracket racing.$268.95
- COMP Cams®Xtreme Marine Camshaft (11-244-4)Xtreme Marine Camshaft (11-244-4) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and...Xtreme Marine CamshaftHydraulic: for jet with A or B impeller, 9.5:1 compression, needs headers, performance use.$242.95
- COMP Cams®Xtreme Marine Camshaft (11-244-20)Xtreme Marine Camshaft (11-244-20) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum...Pro Plasma Nitriding Service In HouseNitrogen Is Introduced Into Iron Or Steel$381.95
- COMP Cams®Xtreme Marine Camshaft (11-240-4)Xtreme Marine Camshaft (11-240-4) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and...Xtreme Marine CamshaftHydraulic: for jet with A impeller, needs improved intake, works well with headers.$262.95
- COMP Cams®Xtreme Marine Camshaft (11-240-20)Xtreme Marine Camshaft (11-240-20) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum...Pro Plasma Nitriding Service In HouseNitrogen Is Introduced Into Iron Or Steel$381.95
- COMP Cams®Xtreme Marine Camshaft (11-236-4)Xtreme Marine Camshaft (11-236-4) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and...Xtreme Marine CamshaftHydraulic: for jet with A impeller, strong mid-range, good throttle response, noticeable idle.$277.95
- COMP Cams®Xtreme Marine Camshaft (11-232-3)Xtreme Marine Camshaft (11-232-3) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and...Xtreme Marine CamshaftHydraulic: Biggest for inboard/outboard, good for ski, economy & performance.$217.95
- COMP Cams®Xtreme Marine Camshaft (08-418-8)Xtreme Marine Camshaft (08-418-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and...Xtreme Marine CamshaftHydraulic roller: Good for jet boat with A or B impeller, strong mid-range power, needs good exhaust.$522.95
- COMP Cams®Xtreme Marine Camshaft (08-417-8)Xtreme Marine Camshaft (08-417-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and...Xtreme Marine™ Cams: Extremely wide powerband helps get boat on plane while making maximum horsepowerWork against exhaust systems w/ restrictive back pressure$522.95
- COMP Cams®Xtreme Marine Camshaft (08-416-8)Xtreme Marine Camshaft (08-416-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and...Xtreme Marine™ Cams: Extremely wide powerband helps get boat on plane while making maximum horsepowerWork against exhaust systems w/ restrictive back pressure$522.95
- COMP Cams®Xtreme Marine Camshaft Kit (K34-254-5)Xtreme Marine Camshaft Kit (K34-254-5) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Expertly crafted from premium materialsDesigned to match rigorous quality standards$778.95
- COMP Cams®Xtreme Marine Camshaft Kit (K34-245-5)Xtreme Marine Camshaft Kit (K34-245-5) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Expertly crafted from premium materialsDesigned to match rigorous quality standards$778.95
- COMP Cams®Xtreme Marine Camshaft Kit (K34-241-5)Xtreme Marine Camshaft Kit (K34-241-5) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Expertly crafted from premium materialsDesigned to match rigorous quality standards$653.95
- COMP Cams®Xtreme Marine Camshaft Kit (K34-236-4)Xtreme Marine Camshaft Kit (K34-236-4) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Expertly crafted from premium materialsDesigned to match rigorous quality standards$684.95
- COMP Cams®Xtreme Marine Camshaft Kit (K34-232-4)Xtreme Marine Camshaft Kit (K34-232-4) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Expertly crafted from premium materialsDesigned to match rigorous quality standards$616.95
- COMP Cams®Xtreme Marine Camshaft Kit (K12-418-8)Xtreme Marine Camshaft Kit (K12-418-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Good for jet with A size impellerStrong mid-range power$1,472.95
- COMP Cams®Xtreme Marine Camshaft Kit (K12-236-3)Xtreme Marine Camshaft Kit (K12-236-3) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Biggest Cam For Inboard/OutboardGood Mid-Range with Excellent Response$500.95
- COMP Cams®Xtreme Marine Camshaft Kit (K11-461-8)Xtreme Marine Camshaft Kit (K11-461-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine CamshaftHydraulic roller: Good for jet boat with B impeller with 10:1 compression running river drags or Bracket racing.$1,566.95
- COMP Cams®Xtreme Marine Camshaft Kit (K11-456-8)Xtreme Marine Camshaft Kit (K11-456-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine CamshaftHydraulic roller: Good for jet boat with A or B impeller with 10:1 compression running river drags or bracket racing.$1,567.95
- COMP Cams®Xtreme Marine Camshaft Kit (K11-451-8)Xtreme Marine Camshaft Kit (K11-451-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine CamshaftHydraulic roller: Good for jet boat with A impeller. Great for pleasure or performance use.$1,471.95
- COMP Cams®Xtreme Marine Camshaft Kit (K11-445-8)Xtreme Marine Camshaft Kit (K11-445-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine CamshaftHydraulic roller: Good for inboard/outboard pleasure boats$1,471.95
- COMP Cams®Xtreme Marine Camshaft Kit (K11-252-4)Xtreme Marine Camshaft Kit (K11-252-4) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine CamshaftHydraulic: for jet with B impeller, 10:1 compression, river drags, bracket racing.$645.95
- COMP Cams®Xtreme Marine Camshaft Kit (K11-244-4)Xtreme Marine Camshaft Kit (K11-244-4) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine CamshaftHydraulic: for jet with A or B impeller, 9.5:1 compression, needs headers, performance use.$645.95
- COMP Cams®Xtreme Marine Camshaft Kit (K11-240-4)Xtreme Marine Camshaft Kit (K11-240-4) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine CamshaftHydraulic: for jet with A impeller, needs improved intake, likes headers.$645.95
- COMP Cams®Xtreme Marine Camshaft Kit (K11-236-4)Xtreme Marine Camshaft Kit (K11-236-4) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine CamshaftHydraulic: for jet with A impeller, strong mid-range, good throttle response, noticeable idle.$644.95
- COMP Cams®Xtreme Marine Camshaft Kit (K11-232-3)Xtreme Marine Camshaft Kit (K11-232-3) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine CamshaftHydraulic: Biggest for inboard/outboard, good for ski, economy & performance.$610.95
- COMP Cams®Xtreme Marine Camshaft Kit (K08-418-8)Xtreme Marine Camshaft Kit (K08-418-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine CamshaftHydraulic roller: Good for jet boat with A or B impeller, strong mid-range power, needs good exhaust.$1,377.95
- COMP Cams®Xtreme Marine Camshaft Kit (K08-417-8)Xtreme Marine Camshaft Kit (K08-417-8) by COMP Cams®. Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine...Xtreme Marine™ Cams: Extremely wide powerband helps get boat on plane while making maximum horsepowerWork against exhaust systems w/ restrictive back pressure$1,376.95
The valvetrain systems installed in four-stroke marine engines and their automotive counterparts have much in common. Like a car motor, the inboard or outboard engine may have a SOHC, DOHC, or OHV configuration, depending on the construction of the cylinder head. In the first and second variants, one or two camshafts are installed above the valves and are driven by the crankshaft via the timing belt or chain. In most cases, the chain is considered more reliable and durable; it can be virtually maintenance-free, given that motor oil responsible for lubing this crucial mechanism changes regularly.
However, everything may happen, and if bad lubrication or too many workhours is the reason, chances are high that in addition to a chain, you will also need a camshaft, sprockets, tensioner, and some other parts required for engine rebuild. In our online store, you will find a large assortment of marine valvetrain parts designed for various engine makes and models and available in kits or individually. Many kits also include valve lifters that can be of flat tappet or roller type, hydraulic or mechanical. All of them are sourced from reputable brands standing behind their products.
