Performance Upgrade Pistons Focus on BMW engine models N14,N20, N54, N55, S55, B48, B58, M50,M54,S58

2026-05-13

HIMYCAR offers custom forged solutions tailored for BMW models(Mini copper N14, N20, N54, N55, S55, B48, B58, M50 (M50B20/M50B25), M54, and S58,etc. built for extreme power, high RPM, and track/street reliability.

All our piston sizes are (STD) based on original factory specifications, so they fit perfectly without any modifications. We also offer 0.5mm oversize customization to meet different performance needs.

HIMYCAR adjusts piston crown design, compression ratio, and rod length to match each generation’s specs—ensuring perfect fit and optimal performance.

Material: 4032 forged aluminum alloy—high heat resistance, low thermal expansion, and superior tensile strength for 800–1200 HP builds.
Design: CNC-machined with reinforced pin bosses, anti-detonation grooves, and thermal barrier coating on crowns to reduce knock and heat stress.
Custom Compression: STD, pistons support 2–3.5bar boost while maintaining reliability.
Precision: All pistons balanced within ±1g per set for smooth high-RPM operation .

● HIMYCAR Forged Pistons: Built for Boost & Durability

Forged Piston For BMW B58 gen 1 ,gen 2

Forged Piston For BMW N20

Forged Piston For BMW B48

Forged Piston For BMW N54

Forged Piston For BMW N55/S55

Forged Piston For BMW M50, M54

Forged Piston for BMW S58

● HIMYCAR Connecting Rods: I-Beam & H-Beam Options

We offer two beam designs to match your power goals:

1. I-Beam Rods (Gen 1/2 Daily/Street Builds)
Material: 4340 (40CrNiMoA) aircraft-grade forged steel.
Rating: 1000 HP / 8000 RPM—ideal for 600–800 HP street cars with occasional track use.
Features: Lightweight, rigid, shot-peened to relieve stress, magnafluxed/X-rayed for quality control.

B58 i beam.jpg

2. H-Beam Rods (Gen 1/2 Race/Extreme Builds)
Material: 4340 aerospace alloy (ultra-high strength).
Rating: 1400+ HP / 99000 RPM—built for drag racing, time attack, and full-track builds.
Features: Superior lateral strength, optimized big-end geometry, forged bolts included for maximum clamping force.

Balanced set (±1.5g) reduces vibration.

HIMYCAR’s custom forged pistons and rods deliver the strength, precision, and reliability needed to push your BMW engine to its full potential—whether on the street or the track.