Supertech 87mm Bore 30mm Comp Height +15.5cc Dome 8.5:1 CR Pistons RB2 – Terra Firma Automotive

Supertech 87mm Bore 30mm Comp Height +15.5cc Dome 8.5:1 CR Pistons RB26DETT

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  • Regular price $958.14

ETA 1-4 Weeks Please note all times are estimates

Supertech engineers have more than 40 years of experience in the design and production of racing pistons. Supertech utilize the latest in CAD software & Finite Element Analysis (FAE) which enables us to design a strong, light weight and high performance piston.

Supertech pistons are manufactured from extruded high silicon, enhanced 4032 alloy (with additional Cu, Ni & Mg) that has low thermal expansion and features excellent wear resistance. Additionally, the inclusion of enhanced 4032 alloy offers a much higher thermal conductivity. Using this alloy our Supertech pistons have withstood up to 42psi of turbo boost with alcohol, without any problems.


Depending on the type of piston we have either a 2 or 3 step forging process that yields a fine structural grain orienting the fibers in the same direction of the stress. Combine this with several heat treatments and our pistons feature an evenly distributed hardness and extremely high tensile strength. From there each Supertech piston goes through several machining steps specifically designed to ensure dimensional precision, perpendicularity and flatness of the ring grooves.

  • Set Of 6
  • Bore: 87.00mm
  • Over Size: +0.1
  • Comp Ratio: 8.5:1
  • Volume CCs: 15.5
  • Head CCs: 70
  • Comp Height: 1.181"(30mm)
  • Stroke: 2.901"
  • Rod Length: 4.783"
  • Pin Diam: 21mm(.827")
  • Weight: 355grs
  • Requires Ring P/N: GNH-8700
  • Note: T/N
  • Special Order Item - Please Allow Extra Time For Delivery
  • Fits WGNC34 Stagea 260RS
  • Fits BNR32 GTR
  • Fits BCNR33 GTR
  • Fits BNR34 GTR
  • Fits RB26

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