KTM 54630005400 Top Cylinder Head End

( Manufacturer Part Number: 54630005400 ), ( Engine Type: 2-stroke ), ( Type: Cylinder Head ), ( Machine Type: Off-road Motorcycle ), ( Material: Aluminum ), ( Vintage Part: Yes ), ( Country Of Origin: Austria ), ( Performance Part: No )

Review KTM Exc Oem Cylinder Head Top End fits KTM250EXC SX 250 1990–1995

Introducing the KTM 250 EXC SX (Model Year: 1990-1995), a legendary enduro motorbike from the esteemed Austrian brand, KTM. This machine is a perfect combination of power, agility, and versatility, making it a favorite among off-road enthusiasts and competitive racers.

The heart of this motorbike is the 249.8 cc single-cylinder, two-stroke engine. The engine's top end, specifically the cylinder head, is a crucial component, featuring a cutting-edge design for optimal performance. Its lightweight construction ensures excellent power-to-weight ratio, while its robustness guarantees durability even in the most challenging off-road conditions.

The cylinder head is equipped with a reed valve induction system, which provides efficient intake of air-fuel mixture into the engine. The exhaust port is meticulously designed for optimal scavenging, ensuring efficient combustion and a strong power delivery throughout the rev range.

The engine is mated to a 6-speed gearbox, which offers a perfect balance between gearing ratios for both climbing steep hills and maintaining high speeds on open terrain. The clutch system is a wet multi-plate design, providing smooth engagement and excellent modulation for precise control.

The KTM 250 EXC SX boasts a lightweight and agile chassis, which is crucial for handling the demanding terrain of off-road racing. Its frame is made from high-strength chromium-molybdenum steel, ensuring the rigidity and durability required for high-performance riding. The suspension system is a fully adjustable WP Xplor 4800 shock absorber at the rear and a 48 mm WP Xplor upside-down fork in the front, providing excellent damping performance and unparalleled control over various terrain types.

Additional features include a lightweight and durable aluminum fuel tank, a high-grip seat for superior rider comfort, and a versatile frame design, which can be easily adapted for various racing applications. The motorbike is also equipped with a powerful and efficient lighting system, ensuring safe and efficient riding during nighttime conditions.

In summary, the KTM 250 EXC SX (Model Year: 1990-1995) is a high-performance enduro motorbike that combines power, agility, and versatility. Its advanced top-end cylinder head design, coupled with its lightweight and robust chassis, makes it a favorite among off-road enthusiasts and competitive racers alike. Whether you're tackling challenging terrain or pushing yourself to the limit in a race, this motorbike is the perfect partner for your off-road adventures.

The KTM 250 EXC SX (model years 1990-1995) is an iconic two-stroke enduro motorcycle known for its power, agility, and racing heritage. However, like any motorcycle, it comes with its pros and cons.

1. Power: The 250cc two-stroke engine delivers a strong and responsive power output, making the bike suitable for various riding conditions, from tight trails to open terrain.

2. Agility: Its lightweight design and centralized mass contribute to excellent handling and maneuverability, making it a favorite among off-road riders.

3. Racing heritage: The KTM 250 EXC SX is a race-winning motorcycle, and its legacy continues to inspire and attract enthusiasts to this day.

4. Affordability: Compared to newer models, vintage motorcycles like the KTM 250 EXC SX can be more budget-friendly.

5. Parts availability: As a popular and well-supported model, replacement parts for the KTM 250 EXC SX are widely available.

1. Environmental concerns: Two-stroke engines produce more emissions and require more frequent oil changes compared to four-stroke engines.

2. Maintenance: Two-stroke engines require more frequent maintenance, including mixing fuel and oil in the correct ratio.

3. Noise and vibration: Two-stroke engines can be louder and more vibration-prone than four-stroke engines, which may not be desirable for all riders.

4. Limited modern amenities: The KTM 250 EXC SX may lack some modern features, such as electric start, fuel injection, or extensive instrumentation.

The KTM 250 EXC SX is an excellent choice for off-road enthusiasts who value power, agility, and racing heritage. Its lightweight design, responsive engine, and iconic status make it a favorite among riders. However, its two-stroke technology comes with challenges, such as environmental concerns, maintenance requirements, noise, and vibration. Ultimately, the decision to buy a KTM 250 EXC SX depends on your personal preferences, riding style, and budget.

If you are an off-road enthusiast who enjoys the raw power and feel of a two-stroke engine and is willing to put in the necessary maintenance, the KTM 250 EXC SX is a great choice. However, if you prefer a more modern motorcycle with fewer maintenance requirements and more amenities, you may want to consider a newer model with a four-stroke engine. Regardless of your decision, always ensure that you purchase the motorcycle from a reputable dealer or seller to ensure its authenticity and reliability.

Details:

Part Number: CYLINDER HEAD. Condition: OEM KTM cylinder. We primarily ship large/heavy items FedEx Ground. It was removed from a running 1994 KTM 250 EXC motorcycle and is compatible with other model's according to the listed part numbers.

KTM 250 EXC 1994. Body, suspension, plastics may require some cleaning. There are no cracks, welds, or signs of repair. All threaded holes and mounting points are intact.

Normal scuffs and scratches from regular use may be visible on the parts. The gasket surface is clean and smooth.There are visible signs of use on the cylinder walls it still in working condition, but I recommend boring to next size for optimal performance.

part #: 54630005400 prices

• $150.41-$602.20

specifications cylindermotorcycleiz:

• for models: Ktm250exc, Sx, 250
• for makes: Ktm
• for years: 1990-1995
• mpn: 54630005400
• engine type: 2-stroke
• type: Cylinder Head
• machine type: Off-road Motorcycle
• material: Aluminum
• vintage part: Yes
• country of origin: Austria
• performance part: No

shipping cylindermotorcycleiz:

• class: Expedited
• transit: 4-8 Days
• type: Fixed
• service: USPS Priority Mail
• carrier: USPS
• cost: $15.95

payments cylindermotorcycleiz:

• credit card: Discover
• other
• wallet: Paypal

seller cylindermotorcycleiz:

• # reviews: 833
• city: Sandy, Oregon
• rating: 100.0%

returns cylindermotorcycleiz:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

offer cylindermotorcycleiz:

• quantity: 1
• started: November 25, 2025
• sold: 0
• availability: In Stock
• options: Ship-to-home

general cylindermotorcycleiz:

• condition: Used
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads

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