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CP Piston & Ring Set BMW/Toyota B58 - Bore (82mm) - CR (11:1) - Set of 6

CP Pistons
CPPSC8705-6
Piston Sets - Forged - 6cyl
1 Units In Stock - Ships Next Business Day
$ 1,534.00
$ 1,534.00

SKU: SC8705-6


CP Pistons Piston & Ring Set – BMW/Toyota B58 82mm Bore 11:1 CR Set of 6

The CP Pistons forged piston and ring set for BMW/Toyota B58 engines. 82mm bore with 11:1 compression ratio, fully CNC-machined from high-strength 2618 alloy, delivers exceptional strength, lightweight design, and maximum power potential, the ultimate bottom-end upgrade for any high-boost, turbocharged, or race B58 build (BMW M340i, Supra A90, etc.).

Key Features

  • 2618 Forged Alloy – High-strength material for extreme boost and RPM applications
  • 82mm Bore – Stock bore size with precision machining for perfect cylinder fit
  • 11:1 Compression Ratio – Ideal for high-performance naturally aspirated or moderate boost setups
  • CP Proprietary Ring Set – Included rings for optimal sealing, reduced blow-by, and durability
  • Complete Set of 6 – Full kit for inline-6 B58 engines (BMW B58, Toyota B58)
Spec Detail
Part Number SC8705-6
Brand CP Pistons
Type Piston & Ring Set
Bore 82 mm
Compression Ratio 11:1
Material 2618 Forged Alloy
Compatibility BMW/Toyota B58 Engine (Set of 6)
Country of Origin United States
Warranty CP Pistons Limited Warranty

Whats Included

  • 6 x CP Forged Pistons (82mm bore, 11:1 CR)
  • Matching CP Piston Ring Set
  • Wrist pins and locks
  • Installation instructions

Product Notes

  • Designed for BMW B58 (M340i, X3 M40i, etc.) and Toyota B58 (Supra A90/A91)
  • Supports high-boost turbo applications with proper tuning
  • Recommended with ARP head studs and upgraded head gasket for high-power builds

Installation Notes

  • Requires professional engine assembly
  • Estimated time: Included in full engine rebuild
  • Gap rings per CP specs; hone cylinders for optimal ring seating

This Part Fits

Year Range Make Model Trim / Engine Notes
2016+ BMW M340i / X3 M40i / etc. B58 3.0L Turbo 82mm bore 11:1 CR
2019+ Toyota Supra A90/A91 B58 3.0L Turbo 82mm bore 11:1 CR

Why Choose CP Pistons for B58?

  • #1 choice for forged pistons in high-boost BMW/Toyota B58 engines
  • Built & tested in the United States
  • Chosen by tuners and racers for strength, lightweight, and power potential

Frequently Asked Questions

  • Q: Does this fit my 2020 BMW M340i B58?
    A: Yes, direct fit for B58 3.0L turbo engines (82mm bore 11:1 CR).
  • Q: Are rings included?
    A: Yes, complete piston & ring set for 6 cylinders.
  • Q: Suitable for high boost?
    A: Yes, 2618 alloy forged pistons designed for high-boost and race applications.

Shipping & Handling

  • Method: Ground UPS or FedEx
  • Availability: In stock – ships same or next business day
  • Packaging: Official CP Pistons retail box

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