fits model: Yz, Kx, 125. year: 1980–1985.

( Brand: Splitfire ), ( Manufacturer Part Number: SF405A ), ( Part Type: Spark Plug )
The SF405A Splitfire Spark Plugs are specifically designed for use in various two-stroke motorcycles, including the YZ 80, YZ 85, KX 125, and KX 65. These spark plugs are renowned for their exceptional performance and reliability, making them a popular choice among enthusiasts and professionals alike.
The SF405A Splitfire Spark Plugs feature a unique center electrode design, which provides an intense and precise spark to ensure optimal combustion. This results in improved engine performance, increased power, and improved fuel efficiency. The plugs also have a copper core, which helps to dissipate heat effectively, preventing pre-ignition and ensuring longer spark plug life.
The SF405A Splitfire Spark Plugs are also designed with a tapered ground electrode, which provides a wider gap at the tip for easy ignition. This feature is particularly beneficial in cold weather conditions, where the plug can struggle to ignite the fuel-air mixture. The plugs are also nitride-hard coated, which further enhances their heat resistance and durability.
Furthermore, the SF405A Splitfire Spark Plugs are easy to install, with a straight thread and a conveniently located rubber boot. The boots are designed to protect the plug from damage during installation and to provide a secure seal, preventing fuel and oil leakage.
In conclusion, the SF405A Splitfire Spark Plugs are a high-performance, reliable, and durable solution for two-stroke motorcycles. They deliver improved engine performance, increased power, and improved fuel efficiency, while also ensuring a long spark plug life and easy installation. With their unique center electrode design, copper core, tapered ground electrode, and nitride-hard coating, these spark plugs are a must-have for any two-stroke enthusiast or professional.
Pros of SF405A Splitfire Spark Plugs for YZ 80, 85, KX 125, 65:1. Improved Performance: The SF405A Splitfire spark plugs are designed to provide excellent ignition performance, which can help improve engine performance and power output.
2. Longer Life Span: These spark plugs are made with high-quality materials, such as nickel alloy and iridium, which can help extend their lifespan and reduce the need for frequent replacements.
3. Easy Installation: The SF405A Splitfire spark plugs are easy to install, and they come with a gasket for a secure fit.
4. Durable Construction: The spark plugs have a robust construction, which can help withstand the harsh conditions of off-road riding.
Cons of SF405A Splitfire Spark Plugs for YZ 80, 85, KX 125, 65:1. Higher Cost: Compared to standard spark plugs, the SF405A Splitfire spark plugs can be more expensive.
2. Not Suitable for All Conditions: These spark plugs may not be suitable for all riding conditions, such as in very wet or muddy conditions.
3. May Not Improve Fuel Economy: While the SF405A Splitfire spark plugs can help improve engine performance, they may not necessarily improve fuel economy.
Conclusion: The SF405A Splitfire spark plugs for YZ 80, 85, KX 125, 65 can be a great investment for off-road riders who are looking to improve their engine performance and extend the lifespan of their spark plugs. However, the higher cost may be a potential drawback for some riders. Ultimately, the decision to purchase these spark plugs should be based on the rider's individual needs and budget.
Recommendation: If you are an off-road rider who is looking to improve your engine performance and extend the lifespan of your spark plugs, then the SF405A Splitfire spark plugs for YZ 80, 85, KX 125, 65 could be a worthwhile investment. However, be sure to consider the higher cost and potential limitations in certain riding conditions before making your decision.
Splitfire SF405A spark motorcycle plugs Yz Kx this is new from a closed dealer. Because the flame kernel is not blocked by side electrode as in other spark plugs, it can travel upward through v notch into combustion chamber. You get 5 spark plugs, part number SF405A which fit many 2 stroke motorcycles. The patented Splitfire v design on side electrode is instrumental in helping to improve combustion efficiency.
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