CP Forged Piston & Ring Sets deliver strength, stability, and precise ring seal for GM Gen III/IV LS engines. Forged from 2618 aluminum and paired with Total Seal AP steel rings, this set is engineered for high-horsepower, boosted, or high-RPM combinations where durability and consistent performance are critical.

BTRCP-LS40001115-DSH-8 Includes:

• Set of eight forged pistons
• Total Seal AP Steel 1.2 mm × 1.2 mm × 3.0 mm ring set
• Wrist pins
• Wire locks

BTRCP-LS40001115-DSH-8 Features:

• Forged 2618 aluminum construction for high strength and detonation resistance
• Fully CNC-machined crown, ring grooves, and skirt profile for consistent mass and repeatability
• 4.000 in. bore, 4.000 in. stroke, 6.125 in. rod length, 1.115 in. compression height
• 8 cc Dish piston crown volume for target compression ratio and modern chamber design
• Accumulator groove and contact-reduction groove to stabilize the ring pack and reduce blow-by
• Pin oilers and precision broached pin bores for reliable wrist pin lubrication
• Low-friction skirt coating to minimize wear and cold-start scuffing
• Hardened wrist pins included for high-RPM durability
• Total Seal AP Steel rings (1.2 mm × 1.2 mm × 3.0 mm) provide low drag with excellent sealing under boost

BTRCP-LS40001115-DSH-8 Notes:

• Designed for use with 6.125 in. connecting rods
• Verify piston-to-valve and piston-to-head clearance during mock-up
• Set ring end gaps according to power level and intended fuel/boost
• Professional measurement and assembly recommended