BMW M20B25 Piston Set by Arias

Arias Forged Pistons for BMW M20B25 – 84.5mm Bore, 8.8:1 Compression – Mixing Power & Affordability 

Arias Pistons, backed by 55 years of high-performance piston engineering experience, now offers a piston set for the BMW M20B25 platform. 

Manufactured from Arias forgings in the CP-Carrillo facility in California, USA, these 84.5mm bore, 8.8:1 compression forged pistons offer race-proven durability and precision machining at a competitive price.

Arias Forged Pistons far exceed OEM quality, offering superior strength, durability, and precision engineering designed to withstand the extreme demands of high-performance and forced induction applications.

Designed for up to 1,000HP, Arias Forged Pistons are the ideal solution for M20B25 turbo builds that demand strength, reliability, and optimal performance—at an affordable price.

Piston Sets Include:

- Pistons
- Rings (Install Guide Here)
- Pins
- Locks
- Spec Sheet

Key Features:

• Precision Forged for Strength – Arias forgings are designed to handle high cylinder pressures in forced induction applications.
• Manufactured in the CP-Carrillo Facility – Cut on the same machines, by the same specialists, ensuring top-tier quality.
• Optimized for Boosted M20 Builds – 8.8:1 compression provides the ideal balance between power, efficiency, and tuning flexibility.
• Power & Affordability – Get premium quality without the premium price tag.
• Made in America – US-sourced forgings machined right here in the USA.

Arias Forged Pistons offer the perfect blend of power, reliability, and value for M20B25 builds. If you're aiming for horsepower up to 1,000HP, these pistons provide the ideal foundation for your engine build.

Professional installation recommended for maximum performance, safety, and longevity.