DRAG SPECIALTIES 139689 Piston Set Compression 3-3/16 9/1

( Brand: Drag Specialties ), ( Manufacturer Part Number: 139689 ), ( Part Type: Piston Compression ), ( Warranty Details: See Manufacturer )

Review DRAG SPECIALTIES Piston Set 3-3/16 Inch Bore 9/1 Compression Ratio Harley Davidson fits SPORTSTER DS

Introducing the 139689 DS Piston Set 3-3/16 compression for Harley-Davidson Sportster motorcycle engines. This high-performance piston set is specifically designed and engineered to deliver optimal power and reliability, making it an excellent upgrade for riders seeking improved engine performance.

The pistons in this set have a compression height of 3-3/16 inches, making them suitable for certain Harley-Davidson Sportster applications. The piston rings are engineered from premium materials, ensuring a snug seal in the cylinder bore and minimal compression leakage. Designed to operate efficiently and effectively in the grueling demands of a motorcycle engine, these pistons are shorter and lighter than OEM counterparts, resulting in reduced reciprocal weight and quicker revving.

The piston bowls incorporate a unique design, allowing excellent oil control for consistent lubrication even during heavy riding conditions. The piston crown shape is optimized for effective combustion, ensuring efficient energy transfer between the fuel charge and the engine.

Each piston is manufactured using only the finest materials, including forged aluminum alloy. This forging process not only strengthens the piston but also ensures uniformity in profile and wall thickness, enhancing the durability and longevity of the part. The result is a set of pistons that deliver exceptional power, increased horsepower, and torque, translating to a thrilling riding experience.

The 139689 DS Piston Set supports upgrades for high compression engines, making it ideal for riders who demand more from their Harley-Davidson Sportster. Every piston is meticulously machined to precise tolerances, ensuring perfect fitment, stability, and long-lasting performance.

Designed, manufactured, and tested in accordance with the highest industry standards, this 3-3/16 compression Harley-Davidson Sportster piston set is the ultimate choice for riders expecting the best in power, reliability, and longevity. Upgrade today and take your Harley-Davidson Sportster experience to the next level.

Pros and Cons of Buying a 139689 DS Piston Set for Harley-Davidson Sportster

* Pro: The piston set is designed specifically for Harley-Davidson Sportster engines, ensuring a perfect fit and optimal engine performance.

* Pro: The upgraded pistons may result in increased horsepower and torque compared to stock pistons.

* Pro: Improved compression ratio could lead to a more responsive and efficient engine.

* Pro: The pistons are manufactured from forged materials, ensuring greater strength and durability compared to cast pistons.

* Pro: Replacing pistons at regular intervals is a common preventive maintenance practice, which can prolong the life of the engine and prevent major damage.

* Pro: Installing a new piston set is an affordable way to personalize and enhance the performance of your Harley-Davidson Sportster.

* Pro: Customizing your bike in this way can add value to your vehicle if you decide to sell it in the future.

* Con: Installing aftermarket pistons can be a complex process best left to experienced DIYers or professional mechanics.

* Con: Instead of an off-the-shelf replacement part, a piston set requires precision measuring and machining of the engine components to ensure a perfect fit-- this can be time-consuming and expensive if not done correctly.

* Con: If not installed properly, the piston set may lead to engine damage, including seizure or even total engine failure.

* Pro: The cost of a high-quality aftermarket piston set is typically less expensive than purchasing a new engine or major engine components.

* Con: The expense of a piston set, as well as the additional labor and materials required for installation, can add up.

Buying a 139689 DS Piston Set for a Harley-Davidson Sportster can lead to improved engine performance, enhanced durability, and personalization. However, there are potential risks, including complexity of installation and the potential for engine damage if not installed correctly. Additionally, there is an associated cost with purchasing and installing the piston set.

If you are comfortable with the installation process or have a trusted mechanic to install the piston set, the benefits could outweigh the potential risks, resulting in an enhanced riding experience. Additionally, it is recommended to thoroughly research the piston set's reputation and compatibility with your specific Harley-Davidson Sportster model.

Details:

Harley Davidson XLCH1000 Sportster 1000 1972-1979. Harley Davidson XLH1000 Sportster Standard 1972-1978. Harley Davidson XLCR1000 Sportster Cafe Racer 1977-1978. Piston rings are not included.

DS Piston Set 3-3/16 Bore 9:1 Compression Ratio Harley Davidson Sportster: Pistons come complete with wrist pins and cir clips sold in pairs.

part #: 139689 price

• $125.95

specifications pistondon:

• for models: Ds, Sportster
• for makes: Harley, Davidson
• brand: Drag Specialties
• mpn: 139689
• part type: Piston Compression
• warranty details: See Manufacturer

general pistondon:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
• condition: New

shipping pistondon:

• transit: 4-9 Days
• carrier: UPS
• type: Fixed
• cost: $0.00
• service: UPS Ground
• class: Standard

seller pistondon:

• city: Grand Rapids, Michigan
• # reviews: 600491
• rating: 99.2%

returns pistondon:

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

payments pistondon:

• credit card: Mastercard
• wallet: Paypal
• other

offer pistondon:

• sold: 0
• options: Ship-to-home
• quantity: 2
• started: January 2, 2025
• availability: In Stock

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