CP Piston Set RB26DETT 86.0mm Standard Bore 8.5:1 Compression SC7309

RB26DETT engines in the R32, R33, and R34 Skyline GT-R demand high-quality pistons when pushing for higher power, better reliability, or optimized compression. The CP Piston Set (SC7309) is a premium upgrade featuring 86.0mm standard bore pistons with an 8.5:1 compression ratio, designed to handle the stresses of high-boost and high-RPM applications. Crafted from 2916 alloy and fully CNC machined to strict tolerances, these pistons include accumulator grooves and dual forced pin oilers for superior oil control and durability under extreme conditions.

Balanced to within ±1 gram, this set comes complete with standard pins and pin locks, making it a ready-to-install solution for serious engine builds. The standard bore compatibility ensures a direct fit while the optimized geometry delivers efficient power production and reduced piston slap, helping maintain long-term engine health while supporting substantial horsepower gains.

At Terra Firma Automotive, we supply this genuine CP Piston Set as a trusted choice for RB26DETT builders seeking precision, strength, and performance. Made in the USA with years of race engineering behind them, these pistons deliver the reliability and consistency needed for both street and competition use. For enthusiasts serious about optimizing their RB26 for high-boost and high-RPM use, this CP piston set is one of the most effective upgrades you can make to your Skyline.

 

• CP Piston Set for RB26DETT with 86.0mm standard bore
• 8.5:1 compression ratio for balanced performance and boost compatibility
• Crafted from 2916 alloy with full CNC machining
• Balanced to ±1 gram for smooth engine operation
• Accumulator grooves and dual forced pin oilers for superior oil control
• Includes standard pins and pin locks for complete assembly
• Optimized geometry for efficient power production
• Reduces piston slap and improves long-term engine durability
• Ideal for high-boost and high-RPM RB26DETT builds
• Direct upgrade for R32, R33, and R34 GT-R engines
• Premium CP engineering with proven race heritage
• Supports upgraded turbos, heads, and fuel systems
• Transforms your RB26 into a more powerful and reliable engine
• Trusted by professional builders for precision and quality
• Essential component for optimized RB26 performance builds
• ⚠️ Emissions / California Legal Disclaimer – Off-Road / Competition Use Only: This product is intended for off-road, competition, and track use only. It is not legal for sale or use on public roads or highways in California (or any other CARB-adopting state). For more information Click Here.