2003 HARLEY-DAVIDSON Engines & Components

Hastings Piston Ring Sets

Whether it's a car, truck, motorcycle, marine, or performance racing—properly sealing the piston to the engine block is a requirement. Hastings Piston ring sets do just that, while being offered in many different options to fit virtually any piston out there. If the engine your working on is blowing smoke, using excessive oil, or at a loss for power, it may be time for new rings. Hasting piston ring sets are great for rebuilds or new builds. Hastings has been manufacturing piston rings since 1915 and they have not spent a second developing anything but piston rings. Trust the professionals at Hastings and use them on your next job.

4.47 out of 5 stars ( 126 )

$25.99

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$35.99

Hastings Premium Ductile Ring Sets

Whether it's a car, truck, motorcycle, marine, or performance racing application—properly sealing the piston to the engine block is a requirement. Hastings premium ductile ring sets do just that, and they're offered in many different options to fit virtually any piston. If the engine you're working on is blowing smoke, using excessive oil, or at a loss for power, it may be time for new rings. These premium ductile piston ring sets are great for rebuilds or new builds, daily drivers or performance vehicles. Order the sizes needed for your project.

4.51 out of 5 stars ( 155 )

$22.99

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$48.99

Feuling Parts Inner Camshaft Bearings

Feuling supplies the best bearings available from Koyo Bearings USA LLC, created following Koyo's acquisition of Timken's needle roller bearings business. Feuling Parts inner camshaft bearings are heavy-duty, compact, full complement needle roller bearings designed to provide increased radial load carrying capacity by maximizing the number of rollers in the bearing. Feuling Parts inner cam bearings readily accept the higher loads and demands of performance engines.

5.0 out of 5 stars ( 2 )

$33.95

Emgo Oil Filters

Emgo oil filters are proven, high-quality filters that meet all warranty performance requirements of OEM parts. These oil filters offer you the peace of mind that you are doing your engine justice by keeping harmful particles out of your engine's oil. Available for a wide variety of applications, Emgo is here for your oil filter needs.

4.88 out of 5 stars ( 8 )

$20.89

Kibblewhite Black Diamond Valves

Kibblewhite Black Diamond valves are CNC-machined from one-piece forgings of EV8 stainless steel, impregnated by a special German process to a depth of .002 in. with a surface buildup of .0002 in. This proprietary, multi-stage process reduces friction and provides superior resistance to wear and corrosion over traditional chrome and nickel electrolysis plating processes. These valves go through an oxiding and polishing process that creates an extremely smooth surface finish that's easy on valve guides, and there's nothing to flake off and get trapped between the valve and guide to cause seizure or wear! Kibblewhite Black Diamond valves are designed using Finite Element Analysis software, with profiles tested on Kibblewhite's computerized flow bench to provide excellent flow characteristics. These strong, reliable, and lightweight valves are your ticket to ultimate valvetrain performance!

Not Yet Reviewed

$31.01

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$37.55

Wiseco 4-Stroke Piston Rings

Manufactured to the highest standards to outperform the competition, Wiseco 4-stroke piston rings maximize your performance and keep you firing on all cylinders. These rings are crafted from various metals and with specific finishes for both street and track. Designed to underscore piston lubrication, reduce bore friction, and optimize the heart of your engine, Wiseco rings improve the overall function of your pistons and powerplant. The 4-stroke rings are intended for use in cast iron, NikaSil, boron composite, and electrofusion bores; certain rings are designed for limited coatings, such as the XJ with chrome bores and the XN with NikaSil bores. Match up the specs from your motorcycle with the size and type of piston ring replacements you need. You can always depend on race-proven Wiseco technology!

4.5 out of 5 stars ( 16 )

$47.99

Wiseco Powersports Piston Wrist Pins

Choose Wiseco for your powersports piston wrist pins. They carry a variety of pins to suit most any applications in either chromed or un-chromed, straight or tapered styles, with no finish or their Superfinish. Wiseco powersports wrist pins are strong, lightweight, and can be used with OEM pistons.

4.0 out of 5 stars ( 3 )

$22.99

JE Pistons Pro Seal Piston Rings

JE Pistons Pro Seal piston rings feature barrel-faced top rings made from premium ductile iron. They also have a special high-tech, friction-reducing, plasma-moly inlay on the face that combines molybdenum, nickel, chrome, and trace elements. The results are higher temperature resistance, reduced wear, better ring sealing, and reduced flaking. The second rings are a taper-faced, reverse-torsional design with a special phosphate coating. The oil-control rings are available in your choice of either low or standard-tension types. Choose the set designed for fitment on your engine application.

4.8 out of 5 stars ( 5 )

$33.99