KTM 250 XC Engines & Components

Hot Rods Crankshafts

Are you looking to replace a broken or worn-out crankshaft? Hot Rods crankshafts are sold with or without Hot Rods connecting rods and wrist pin bearings. These crankshafts are factory assembled and trued to OEM specifications. They avoid the additional machine work and extra parts typically required for long-stroke engines. Stroker crankshafts use stock pistons. Heavy-duty crankshafts utilize their heavy-duty connecting rods. Bolt in and go with these Hot Rods crankshafts!

Not Yet Reviewed

$505.35

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$529.10

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 )

$21.99

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.

5.0 out of 5 stars ( 5 )

$2.99

All Balls Racing Countershaft Seal Kits

Performance and reliability start with All Balls Racing. Their countershaft seal kits package a case hardened bushing and a replacement outer seal with any O-rings, snap rings, or lock washers required for your application. Whether your off-road ride has two wheels or four, All Balls Racing has a countershaft seal kit for you.

Not Yet Reviewed

$25.77

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$27.99

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

$54.10

Vertex Top-End Piston Kits

Vertex top-end piston kits are OEM-style replacements. These kits include everything needed to rebuild a top-end for the specific application selected. When applicable, the wrist pin bearing included is DLC-coated for added longevity. All piston skirts are coated with a high-tech molybdenum disulphide coating for faster break-in and increased piston life along with a T-5 hardening cycle. Rebuild your top-end without worries with Vertex top-end piston kits.

4.67 out of 5 stars ( 3 )

$224.06

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$246.56

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

5.0 out of 5 stars ( 2 )

$1,042.06

Hot Rods Output Shaft Kits

Hot Rods output shaft kits feature a unique combination of innovative engineering and quality manufacturing. They are a quick solution to repairing a leaking output shaft seal in one complete kit. These kits include Hot Rods output shaft seal, output shaft bushing, o-rings, and a sprocket nut washer where applicable. Ride hard and be safe with quality parts from Hot Rods.

Not Yet Reviewed

$28.45

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$37.95

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!

5.0 out of 5 stars ( 2 )

$642.56

Hot Rods Crankshaft Bearing and Seal Kits

Hot Rods crankshaft bearings and seal kits are the ideal alternatives to expensive OEM bearings and seals. These precision, high-quality crank bearing and seal kits complement Hot Rods' crankshaft assemblies. Hot Rods offers two crankshaft bearings and two seals to complete your installation.

Not Yet Reviewed

$113.00

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

Hot Rods Counterbalance Bearing Kits

Hot Rods counterbalance bearing kits are a must have for any new counter balancer, engine case installation or repair. These replacement kits include trusted Hot Rods bearings for the counterbalancer shaft for most modern 4-stroke engines.

Not Yet Reviewed

$40.80

Hot Rods Connecting Rods

Hot Rods connecting rods are premium-quality replacements offered to you at an extremely affordable price. All of their rods are created from 8620 case hardened steel. But, in addition to that, they undergo a special forging process which helps to improve grain flow as well as dimensional consistency--and that means a rod of uncompromising strength. These connecting rods are built tough and tested to ensure maximum strength and durability. Don't be left behind because of a broken bike--keep your machines running in top-notch condition with these Hot Rods connecting rods!

4.0 out of 5 stars ( 1 )

$144.35

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Wiseco Powersports Pro-Lite Piston Kits

Wiseco powersports piston kits include your rings, piston pin, and circlips. These 2-stroke kits feature Pro-Lite pistons that are CNC-machined for optimal cam shape and profile, horsepower, and service life. Wiseco has a decade of experience producing quality pistons for dirt bikes, ATVs, snowmobiles, outboard marine engines, and motorcycles. Their piston kits offer strong, lightweight pistons with optimized designs to 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.

4.13 out of 5 stars ( 8 )

$184.99

Wiseco 2-Stroke Piston Rings

Wiseco 2-stroke piston rings improve the overall function of your pistons and powerplant to maximize performance and keep you firing on all cylinders. Manufactured to optimize piston lubrication and reduce friction, ensuring longer performance from the heart of your engine, these rings are crafted from various metals and with specific finishes for both street and track. The 2-stroke rings are intended for use in cast iron, NikaSil, boron composite, and electrofusion bores; certain rings are designed for limited coatings, such as CSM and CDM model rings with chrome bores. Just match up the specs from your motorcycle with the size and type piston ring replacements you need. You can always depend on race-proven technology from Wiseco!

3.33 out of 5 stars ( 6 )

$22.99

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$47.99

Boyesen Factory Racing Ignition Covers

Add style and a factory look to your bike with Boyesen Factory ignition covers. These covers are strong, lightweight, and durable, providing years of outstanding protection. Features include: * Asbestos-free gasket is bound with nitrile for a tight, leak-free seal * Individually formed mounting surface to ensure a perfect fit * Investment cast aluminum, which provides excellent heat dissipation and will not warp like stock clutch covers * Super-tough powdercoated finish resists weathering and wear and tear

5.0 out of 5 stars ( 3 )

$98.99

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

$500.60

All Balls Racing Crankshaft Bearing Kits

All Balls Racing crankshaft bearing kits contain left side and right side crankshaft bearings and seals or just bearings, 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 kits include quality parts to do the job right!

5.0 out of 5 stars ( 1 )

$151.36