SC7405-4 CP PISTONS Ring Set Compression Brz Subaru

Review CP PISTONS And Ring Set For Subaru 86mm Bore 10.0 Compression Ratio for SUBARU BRZ

Introducing the Piston Ring Set SC7405-4, an essential upgrade for Subaru BRZ and Toyota 86 engines with FA20 86mm cylinders and a 10.0:1 compression ratio. This ring set is specifically designed to enhance the performance of your Subaru or Toyota's engine, making it an excellent investment for enthusiasts and racers seeking improved power and efficiency.

The SC7405-4 piston ring set includes four critical components: the top ring, second ring, oil control ring, and the compressor ring. Each ring is meticulously crafted from high-quality materials and engineered to precise specifications to ensure optimal engine performance.

The top ring, also known as the compression ring, is responsible for sealing the combustion gases within the cylinder during the combustion process. It is designed with a specialized coating to improve gas sealing and reduce friction, resulting in increased power and torque.

The second ring, also known as the oil control ring, is responsible for controlling oil consumption within the engine. It features an improved design that enhances oil control, reducing oil consumption and ensuring a cleaner combustion chamber.

The oil control ring is supported by the compressor ring, which is designed to compress the piston rings during the engine start-up process. This ring helps ensure proper sealing and reduces the chances of ring drift, ensuring optimal engine performance.

Finally, the SC7405-4 piston ring set is manufactured to meet or exceed Subaru and Toyota OEM specifications. This ensures a perfect fit and reliable performance, making it an ideal choice for those seeking to maximize the potential of their Subaru BRZ or Toyota 86 engine.

Upgrading to the SC7405-4 piston ring set is an excellent investment for Subaru BRZ and Toyota 86 owners looking to improve their engine's performance. With enhanced oil control, improved combustion sealing, and reduced friction, this ring set is sure to provide noticeable gains in power, efficiency, and reliability.

Piston Ring Set (SC7405-4) for Subaru BRZ FA20: A Detailed Analysis

The SC7405-4 piston ring set is a popular aftermarket option for Subaru BRZ and Toyota 86 engines with a 86mm bore and 10.0:1 compression ratio. This analysis aims to provide an unbiased assessment of the product's advantages and disadvantages to help you make an informed decision.

1. Enhanced Performance: The piston ring set is designed to improve engine performance by reducing friction and improving sealing efficiency. This can lead to increased horsepower and torque.

2. Durability: The rings are made of high-quality materials, such as low-tension piston rings, to ensure longevity and better resistance to wear and tear.

3. Compatibility: The piston ring set is specifically engineered for the Subaru BRZ FA20 engine, ensuring a perfect fit.

4. Cost-Effective: Compared to other aftermarket options or OEM parts, the SC7405-4 piston ring set is relatively affordable.

1. Installation Complexity: Installing the piston ring set requires a certain level of mechanical expertise and specialized tools. It is not a DIY job for most enthusiasts.

2. Potential Engine Noise: Some users have reported increased engine noise after installing the piston ring set. This could be due to the improved sealing efficiency, which can lead to reduced exhaust gas leakage and increased engine vibrations.

3. Lack of Warranty: The piston ring set does not come with a warranty, which might be a concern for some customers.

The SC7405-4 piston ring set for the Subaru BRZ FA20 engine offers several benefits, such as enhanced performance, durability, compatibility, and cost-effectiveness. However, it also comes with some drawbacks, including the complexity of installation and potential engine noise. Ultimately, the decision to purchase this product depends on your personal priorities and technical expertise.

If you are an experienced mechanic with the necessary tools and skills, or if you are willing to pay for professional installation, the SC7405-4 piston ring set can be a worthwhile investment for improved engine performance and longevity. However, if you are not comfortable with the complexity of installation or the potential for increased engine noise, it may be worth considering alternative solutions or consulting with a professional mechanic before making a decision.

Details:

Constructed with high-quality materials, these Pistons are engineered to withstand high-pressure conditions and reduce piston slap, ensuring smooth engine performance. This set includes four Pistons with an 86mm bore and a compression ratio of 10.0, providing precise fitment reliable operation. Each piston features a robust design that supports consistent power delivery and longevity, making it suitable for both daily driving performance applications. The set is ideal for enthusiasts looking to enhance engine efficiency or rebuild their with premium components.

specifications engineblocksam:

• for models: Brz
• for makes: Subaru
• brand: Cp Pistons
• mpn: Sc7405-4
• part type: Ring Compression
• air freight prohibited: False
• not carb approved: True

seller engineblocksam:

• city: reno, nevada
• rating: 99.7%
• # reviews: 9149

returns engineblocksam:

• time: 30 days
• policy: returns accepted
• paid by: seller

shipping engineblocksam:

• carrier: fedex
• class: standard
• service: fedex ground / fedex home delivery
• type: fixed
• transit: 2-4 days

offer engineblocksam:

• sold #: 8
• price: $885.15
• item condition: New
• availability: in stock
• in stock #: 5
• started: may 18, 2026
• options: ship-to-home

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• credit card: visa
• wallet: google-pay
• other

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks