fits model: Ex570. make: Yamaha. year: 1987–1990.

( Brand: Lemans ), ( Manufacturer Part Number: 09-817-02 ), ( Part Type: Piston ), ( Country/region Of Manufacture: Taiwan )
The Yamaha EX570 Exciter, model years 1987-1990 with part number 020 piston, is a legendary two-stroke dirt bike that was renowned for its raw power and agility during its time. This iconic motorcycle is part of the EX series, which was developed for those riders who crave the excitement and immediate response that only a two-stroke engine can provide.
The EX570 Exciter was powered by a potent 535cc liquid-cooled two-stroke engine. This engine, with the specifications including a 71.0mm bore and a 65.6mm stroke, boasted impressive power output. The 020 piston, a crucial component of the engine, plays a significant role in its performance. Made from high-quality material, this piston effectively transfers the explosion forces from the combustion chamber to the crankshaft, thus delivering optimum power.
The EX570 Exciter's frame was engineered to be lightweight yet robust. Its double-cradle design adorned with the legendary "Yamaha Blue" color scheme perfectly balanced rigidity and agility. The bike's long travel suspension, with a 36mm Kayaba front fork and a fully adjustable Kayaba monoshock at the rear, ensured excellent handling, absorbing the harshest terrains and providing superb traction in various conditions.
The Ergo-Fit seat was designed with rider comfort in mind. To suit different riding styles and preferences, Yamaha offered two distinct riding positions for the EX570 Exciter: the standard and the competition-style seat height.
The EX570 Exciter also comes equipped with a stylish and functional bodywork. Its race-inspired design contributed to its iconic appearance and exuded a sense of speed and performance. Moreover, the bike's features included a dual headlamp setup, large fuel tank integrated into the steel tank guard, and an essential instrument cluster that displayed important riding data such as fuel level, speedometer, tachometer, and trip meter.
In summary, the Yamaha EX570 Exciter 1987-1990, 020 piston is a high-performance dirt bike that combines power, agility, and exceptional design. Its obstacle-conquering capabilities, coupled with its captivating aesthetics, continue to draw the attention of both vintage motorcycle enthusiasts and those looking to experience the raw thrill of the two-stroke era.
The Yamaha EX570 Exciter, especially the 020 piston Lemans versions produced between 1987 and 1990, is a classic off-road motorcycle renowned for its power, agility, and racing heritage. This motorcycle has gained a dedicated following among collectors and enthusiasts. In considering a purchase, it's essential to weigh the advantages and disadvantages based on individual priorities.
Pros:1. Power and Torque: The 020 piston EX570s deliver increased power and torque, which translates to improved acceleration, and better in-gear performance.
2. Racing Heritage: These bikes share a lineage with the legendary 125cc Grand Prix racers, ensuring a fun and engaging riding experience.
3. Affordability: Compared to recently produced off-road motorcycles, the EX570s from this era are more affordable, making them accessible to a broader range of buyers.
4. Vintage Appeal: Their classic design, iconic Lemans livery, and rich history make the 020 piston EX570s stand out in a sea of modern bikes.
5. Spare Parts Availability: Being part of a dedicated fan base, there is a wealth of aftermarket support, and many spare parts for these bikes are still available.
Cons:1. Age and Maintenance: Motorcycles get older, and regular maintenance and periodic repairs will be inevitable, which can amount to an ongoing expense.
2. Limited Comfort: Compared to modern designs, older motorcycles generally offer less amenities and ergonomics could be less than ideal.
3. Technological Advancements: Current off-road motorcycles incorporate the latest technologies, engine designs, and safety features to boost performance, handling, and rider's confidence.
4. Fuel Efficiency: Older motorcycles tend to have lower mpg ratings due to less refined engines and overall design, leading to more frequent gas stops.
5. Evolving Vehicle Regulations: Due to changing regulations, it might be difficult or impossible to register the motorcycle in some jurisdictions.
Conclusion:The 1987-1990 Yamaha EX570 Exciter 020 piston Lemans models offer a unique and engaging riding experience. The power delivery of these bikes is impressive, boasting a classic design and lineage that continues to attract enthusiasts and collectors. However, their age comes with higher maintenance costs, limited creature comforts, and fewer technological advancements. Ultimately, the decision to buy an EX570 boils down to personal preferences and a willingness to balance the joy of vintage riding with the additional expenses and challenges that come with an older machine.
Recommendation:For those interested in purchasing a 1987-1990 Yamaha EX570 Exciter 020 piston Lemans, thorough research is recommended to ensure the condition, history, and accompanying costs are align with the intended use. Joining a local motorcycle club or connecting with a community of owners can provide invaluable insights and support during the decision-making process. Consider starting your search at reputable vintage motorcycle dealerships and forums to land the best possible deal.
This is for a Yamaha snowmobile pro series Lemans complete piston assay.
There is the piston, two rings, pin, and cir clips.