CP Forged Piston Set - BMW S58B30 3.0L Turbo - 84mm STD 9.3:1 CR - Set of 6

CP-Carrillo forged piston set for the BMW S58B30 3.0L twin-turbo inline-six (G80 M3, G82 M4, X3 M, X4 M). Standard 84.0mm bore with a 9.3:1 compression ratio. Fully CNC-machined forgings balanced to +/-1 gram with accumulator grooves and dual forced-pin oilers; set of 6 with wrist pins.

Specifications

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy