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KAWASAKI KX250F Engines & Components
Showing In Stock Items. Show All 55 Items.
Vertex Complete Engine Rebuild Kits
Manufactured in Italy, Vertex pistons, both cast and forged, are the premier choice and highest quality aftermarket replacement and performance pistons for dirt bikes, ATVs, and UTVs. Vertex also leads the way in manufacturing high performance gaskets for dirt bikes, ATV, UTV, snowmobiles, and PWCs. Conveniently, Vertex offers a huge number of complete engine rebuild kits, each of which will save you time and money over trying to match up the correct components and buying them separately. Oversized pistons are available in some kits. Choose a kit designed for your powersports vehicle. Kits include: * Crankshaft * Piston kit * Complete engine gasket kit * Oil seal kit * Main bearing and seal kit * Water pump rebuild kit * Transmission bearing kit * Countershaft bushing/seal kit * Camshaft chain where applicable * Counter balancer bearing kit where applicable * Wrist pin bearing where applicable
( 1 )
$929.01
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$1,030.16
Hot Cams Valve Shims
Hot Cams valve shims will work with OEM cam adjustments, as well as hot cam adjustments. They are made from 4140 cold rolled steel and are available in several thicknesses and diameters. Hot Cams valve shims are a must for any powersports application to keep it running at full power.
( 6 )
$122.99
Cylinder Works Standard Bore Cylinder Kits
Eliminate the wait with Cylinder Works standard bore cylinder kits. They arrive ready to install, eliminating the hassle of sending out your cylinder for re-plating or boring, and they're competitively priced compared to typical re-plating costs. These cylinders look virtually identical to your OEM parts. Cylinder Works standard bore cylinder kits come in model-specific kits, so choose the one that best fits your application. Features include: * Super-convenient--just purchase and install * Nickel silicon carbide plated for long life * Honed to exact size for easy piston installation * Complete with gaskets, cylinder, and piston kit * No machine work required
( 2 )
$525.26
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$583.91
Hot Cams Refill Shim Packages
Hot Cams refill valve shim packages contain five identical pieces in the size specified.
( 11 )
$10.99
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$11.99
K&N Powersports Oil Filters
K&N Powersports oil filters are designed to satisfy the needs of racers and engine builders as well as the average motorcycle or ATV owner who wants the best oil filter available. These filters trap harmful contaminants while their design allows for high oil flow rates. They are covered by K&N's limited warranty to be free from defects in materials and workmanship when installed and replaced using engine and equipment manufacturer's recommended service intervals. For a high-performance design with outstanding filtration, order the K&N Powersports cartridge oil filters best suited for your application. More product features include: * High-efficiency media with uniform pleats * Ideal for high-end synthetic motor oil
( 27 )
$10.99
Wiseco Powersports Wrist Pin Bearings
Wiseco offers these high-quality wrist pin bearings for a wide variety of applications. Wiseco wrist pin bearings are manufactured to the highest quality standards and are case-hardened for maximum life and smooth operation at high rpm. Trust Wiseco for top-of-the-line wrist pin bearings for your powersports vehicle!
( 4 )
$22.99
Wiseco Powersports Piston Kits
Wiseco powersports piston kits include your rings, piston pin, and circlips. Wiseco has a decade of experience producing quality pistons for dirt bikes, ATVs, snowmobiles, outboard marine engines, and motorcycles. Their piston kits provide strong, lightweight pistons with optimized designs that improve engine efficiency and maximize your torque and throttle response. Plus, Wiseco powersports piston kits are produced right here in the USA. It's time to blaze your own trail with Wiseco powersports piston kits.
( 7 )
$209.99
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$316.99
Hot Cams Drop-In Performance Camshafts
Hot Cams drop-in performance camshafts are one of the most economical, reliable, easy-to-install camshafts and add power gains to dirt bikes, ATVs, and UTVs. Hot Cams drop-in performance camshafts feature 8620 billet case-hardened steel and are CNC-machined for an exact fit and lobe profile. They are engineered to be drop-in cams that use stock valve springs in most cases and have multiple stages to choose from for many of the most popular applications. Stage 1 is designed for excellent bottom end, Stage 2 is designed for increased bottom to midrange performance, and Stage 3 is designed for top end performance.
( 2 )
$200.99
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$264.99
Pro-X Racing Parts Valve Shims
Pro-X Racing Parts offer valve shims for most models Japanese dirt bikes, Road bikes and ATV's and KTM applications. The valve shims are made of premium materials. Specific heat-treatment ensures hardness of the shims to offer maximum durability and less wear. Next to the specific heat-treatment the valve shims are precision machined to match exact size. The ProX valve shims are available in assortment boxes, as well as refill kits. Assortment boxes contain 7.48mm or 9.48mm shims for Japanese applications and 8.90mm and 10.00mm for KTM applications. Thicknesses range from 1.20mm up to 3.50mm. Incremental by 0.025 mm. Refill kits are available for each individual shim size and come in a package of five shims. Select the valve shims for your application needs.
Not Yet Reviewed
$10.95
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$104.99
Wiseco Piston Retaining Clips
Wiseco piston retaining clips are important hardware components for a wide variety of powersports equipment, including ATVs, UTVs, street and off-road bikes, snowmobiles, and personal watercraft. The steel circular wrist pins are designed to permit rotation within the piston, but prevent lateral movement. They're available in a variety of diameters and thicknesses to fit your specific application.
( 5 )
$2.99
Pro-X Racing Parts Oil Filters
Pro-X oil filters are available for a wide range of Dirt bike and Sport ATV models. To reach a high level of quality and consistency, the raw materials are supplied by a selected group of leading manufacturers in the industry. The filters are constructed using only premium materials under strict tolerances and quality control. The various quality control steps in the manufacturing process of the Pro-X oil filters make them one of the best filters in the world. The exclusive design and strict production process brings the perfect combination of protection and performance! Furthermore, every filter goes through 16 individual quality control checks before it is ready to leave the factory. The whole manufacturing process, including the checking of raw materials, and individual filter testing, is regularly audited. Order the oil filter designed for your application needs.
Not Yet Reviewed
$5.95
Wiseco Cam Chains
Wiseco craftsmanship can now be found in their line of cam chains. These M-style chains offer maximum strength and durability. Each is made from premium materials for reduced friction and increased service life and is expertly engineered to exceed OEM specifications and tolerances.
Not Yet Reviewed
$74.99
Pro-X Racing Parts Piston Clips
Pro-X Racing Parts offer a wide range of clips for many piston diameters in different styles compatible with Pro-X or OEM pistons. Piston clips are not just a circled wire, they are much more, as they avoid the pin to move in the piston bosses. Do not underestimate the forces on the pin during operation. Pro-X piston circlips are top-quality, direct replacement circlips, exceeding OEM specifications and tolerances. Shop for Pro-X pistons, clutch plates, pistons and other powersport racing parts that will get you to the finish line faster. Order the Pro-X piston clips designed to fit your application needs.
Not Yet Reviewed
$2.99
Cylinder Works Cylinders
Cylinder Works cylinders are your powersports alternative to OEM or re-plating. These standard bore cylinders are brand new—not remanufactured or replaced—and are nickel silicon carbide-plated cast aluminum to provide long life. They're precision-honed to the exact size to make your piston installation easier. Cylinder Works offers dirt bike and ATV enthusiasts quick and affordable access to direct fit replacement cylinders. Order the bore size recommended for your application.
Not Yet Reviewed
$390.40
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$400.85
BikeMaster Oil Filters
BikeMaster oil filters help you keep your bike running like it should. They're made of high-quality materials to allow for use with standard and synthetic oils and are designed to exceed OEM standards for filtration. They have low internal resistance for maximum oil flow and an internal check valve that prevents oil drain-down and dry starts. If you want to ride long endless days on your bike, having your bike equipped with a BikeMaster oil filter is the best way to do go.
Not Yet Reviewed
$4.99
Kibblewhite Cylinder Head Service Kits
Kibblewhite cylinder head service kits contain all items to completely refresh and upgrade cylinder heads for popular Dirt/MX and Side x Side models. These full kits feature KPMI's top-quality racing valvetrain components. Choose the kit packaged for your specific off-road machine. Features: * Save time money on your next cylinder head rebuild * One package, everything you need for factory recommended valvetrain service * Double your service life over OEM using KPMI valvetrain products * Kitted with value added savings Kits will include: * Retainers * Springs * Base washers (as required) * Seals * Guides * Intake and exhaust Black Diamond or White Diamond valves (Standard head size) * Complete Cometic top-end gasket kit
Not Yet Reviewed
$453.05
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$475.16
All Balls Racing Crankshaft Bearings and Seal Kits
These All Balls Racing crankshaft bearing and seal kits contain right side and left side crankshaft bearings and seals, depending on your application. These crankshaft bearings feature Koyo and Nachi bearings (precision Japanese crank bearings). All Balls Racing crankshaft seals are designed with a carbon/fluorocarbon sealing lip to reduce "dry start" friction and crank pin wear. All Balls Racing crankshaft bearings and seal kits include all of the parts needed to do the job right!
( 1 )
$57.79
Hot Rods Complete Bottom End Rebuild Kits
When it's time to do a rebuild, Hot Rods complete bottom end rebuild kits are less expensive and longer lasting than OEM. These kits have all that you need to get back on track and are easy to put together. Each kit contains a crankshaft, main bearing/seals, and a complete gasket set. Water pump seals are not included. Great performance parts from Hot Rods will have you going, going, strong!
( 2 )
$630.66
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$710.56
Pro-X Racing Parts Countershaft Seal Kits
While changing the front sprocket on your off-road motorcycle, it's always recommended to inspect the countershaft oil seal that's right behind the sprocket. Positioned on the high loaded countershaft and always in contact with dirt and water, the oil seal can easily start leaking. Pro-X Racing has developed a wide range of countershaft seal kits—an easy and complete replacement, offering all the needed components. These upgrade kits also result in improved durability against the OEM parts. Order the seal kits designed for your application. Complete packages include: * Upgraded oil seal * Hardened steel bushing * O-rings, snap ring, or lock washer (where applicable)
Not Yet Reviewed
$20.99
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$22.99
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!
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$47.99
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$56.99
Cylinder Works Big Bore Cylinder Kits
Eliminate the wait with Cylinder Works big bore cylinder kits. They arrive ready to install, eliminating the hassle of sending out your cylinder for re-plating or boring, and they're competitively priced compared to typical re-plating costs. These Cylinder Works cylinders look virtually identical to your OEM parts and are conveniently available in "stealthy" big bore sizes. Cylinder Works big bore cylinder kits come in a variety of sizes, so choose the one that best fits your application. Features include: * Super-convenient--just purchase and install * Nickel silicon carbide plated for long life * Honed to exact size for easy piston installation * Complete with gaskets, cylinder, and piston kit * No machine work required
Not Yet Reviewed
$616.33
Vertex Big Bore Piston Kits
Vertex offers Big Bore piston kits for a variety of applications, including Kawasaki off-road bikes from the 1990s and up. All pistons are heat-treated with a T-5 hardening and tempering cycle, and all piston skirts are coated with a high-tech molybdenum disulphite coating for faster break-in time and increased piston life. Cast piston kits are gravity cast aluminum alloy (not forged) with 18 percent silicone content—which produces an extremely light but very strong piston. Forged pistons are forged from 2618 aluminum for superior strength and durability. Forged high-compression pistons improve power and torque across the entire RPM range. Big Bore pistons increase engine displacement, torque, and peak horsepower. Forged Replica pistons are forged OE replacements. Replica pistons and all rings are OEM replacements.
Not Yet Reviewed
$260.96
Namura Technologies Top-End Repair Kits
Top-end rebuilds can help to improve the performance of your ride, and Namura Technologies top-end repair kits will keep your ATV, UTV, or off-road motorcycle running in peak condition! They include everything you need: pistons, top-end gasket kit, and wrist pin bearings (where applicable) in one convenient, time-saving package. Namura kits are available for a wide variety of makes and models, with specific bore and compression ratio parts to service your specific vehicle. Choose to do your rebuild with repair kits from Namura Technologies—the people who make pistons with attitude!
( 2 )
$153.99
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$161.99
Wiseco Powersports 4-Stroke Forged Series Piston Kits
Wiseco powersports 4-stroke forged series piston kits include your rings, piston pin, and circlips. Wiseco has a decade of experience producing quality pistons for dirt bikes, motorcycles, ATVs, snowmobiles, and outboard marine engines. Their piston kits provide strong, lightweight pistons with optimized designs that improve engine efficiency and maximize your torque and throttle response. Plus, Wiseco powersports piston kits are produced right here in the USA. It's time to blaze your own trail with these Wiseco powersports piston kits! Order the piston kit designed to fit your application.
( 2 )
$239.99
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$312.99
