CP Pistons Bullet Series Forged Piston Set of 8 - Chevy LS3 4.080 Bore (+0.015)

The Bullet Series BLS1127-015 is a forged 2618 aluminum piston set for the Chevrolet LS3, machined to a 4.080 inch bore for a block taken 0.015 inch over the 4.065 inch standard. The flat top crown carries two valve reliefs cut 0.200 inch deep for 3.5cc of relief volume and returns 10.1:1 compression against a 70cc chamber, with a 1.295 inch compression height matched to the factory 3.622 inch stroke and a 6.125 inch rod. Every 475 gram piston is balanced to within one gram and uses contact reduction grooves, an accumulator groove and dual forced pin oilers. The set includes a 1.5mm, 1.5mm and 3.0mm ring pack, 0.927 inch chromoly wrist pins and wire locks.

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