fits model: Shovelhead. make: Harley. year: 1980.

( Brand: Harley Davidson ), ( Manufacturer Part Number: 21990-80 ), ( Part Type: Ring Piston )
The 21990-80a Harley-Davidson Oversized Piston is a high-quality replacement part designed specifically for the 1340cc Shovelhead engine, model years 1978 and up. This piston is manufactured by Davidson, a renowned name in the Harley-Davidson aftermarket industry, ensuring top-notch quality and reliability.
The 21990-80a piston is an oversized piston, which means it provides increased compression for enhanced engine performance. This piston is a direct replacement for the original equipment, ensuring a seamless fit and function in your engine. The piston features a forged construction, providing exceptional strength and durability, and is designed to withstand the high-stress environment of a Harley-Davidson engine.
The piston skirt is designed with a low-tension ring groove, which allows for easy installation and removal of the piston rings. The rings included in this set are also of high quality, ensuring proper sealing and combustion chamber efficiency. The piston is finished with a polished surface, adding a touch of elegance to your engine's appearance.
In conclusion, the 21990-80a Harley-Davidson Oversized Piston by Davidson is a reliable and high-performance replacement part for your Shovelhead engine. It provides increased compression, enhanced engine performance, and is designed for easy installation and removal. With its forged construction and high-quality rings, this piston is a great investment for any Harley-Davidson enthusiast looking to upgrade their engine's performance.
Pros of buying a 21990-80a 1978-up set 80 010 Davidson oversized piston for a Harley-Davidson Shovelhead engine:1. Increased engine capacity: The oversized piston increases the engine displacement from the original 1300cc to 1340cc, providing more power and torque.
2. Improved performance: The oversized piston can improve engine performance, allowing the engine to run smoother and with less vibration.
3. Durability: The Davidson piston is made from high-quality materials and is designed to withstand the rigors of Harley-Davidson riding.
4. Easy installation: The piston kit includes all the necessary components for installation, making it a relatively easy upgrade for the DIY enthusiast.
Cons of buying a 21990-80a 1978-up set 80 010 Davidson oversized piston for a Harley-Davidson Shovelhead engine:1. Cost: The oversized piston kit can be expensive, especially when compared to the cost of a stock piston kit.
2. Requires modification to the engine: Installing the oversized piston kit may require modifications to the engine, including the cylinder bore and head gasket.
3. May void warranty: Installing aftermarket parts like an oversized piston kit may void the warranty on your Harley-Davidson engine.
In conclusion, the 21990-80a 1978-up set 80 010 Davidson oversized piston is a great upgrade for Harley-Davidson Shovelhead engines looking for increased power and performance. However, it is important to consider the costs and potential complications before making the purchase. If you are comfortable with the installation process and understand the potential risks, then this kit can be a great addition to your Harley-Davidson. If you are not comfortable with the installation process or are unsure about the potential risks, it may be best to consult with a professional mechanic before making the purchase.
1978 up 80 Shovelhead piston and rings set oversized 80a 1340cc maybe more please verify proper fit is up to you. Brand new Harley Davidson.