CP Pistons SC7710-8 Mercedes AMG M177/M178 4.0L V8 83mm 10.5:1 Forged Set of 8

Vehicle Fitment

• Mercedes-AMG C63 / C63 S (W205/C205, 4.0L M177, RWD/4MATIC+, 2015-2021)
• Mercedes-AMG E63 / E63 S (W213, 4.0L M177, 4MATIC+, 2017-2023)
• Mercedes-AMG GLC63 / GLC63 S (X253/C253, 4.0L M177, 4MATIC+, 2018-2022)
• Mercedes-AMG CLS53 AMG (C257, 3.0L inline-6 EQ Boost - note: separate engine; confirm M177/M178 fitment)
• Mercedes-AMG G63 (W463/W464, 4.0L M177, AWD, 2019-present)
• Mercedes-AMG GT / GT S / GT R / GT C (C190, 4.0L M178 dry sump, RWD, 2015-present)
• Mercedes-AMG GT 63 / GT 63 S (X290, 4.0L M176/M177, 4MATIC+, 2019-present)
• Mercedes-Benz G500 / G550 (W464, 4.0L M176, AWD, 2019-present)
• Aston Martin Vantage / DB11 / DBS (4.0L AMG-sourced M177-based engine - confirm exact bore spec with builder)

Fitment Notes

• Bore size is 83mm (STD) - this matches the factory M176/M177/M178 cylinder bore; block must be honed to correct clearance before installation even at standard bore
• The M177 (wet sump, AMG sedans/SUVs) and M178 (dry sump, AMG GT sports cars) share the same 83mm bore and 92mm stroke - both applications are covered by SC7710
• The M176 (non-AMG, lower output) also uses the same bore dimensions
• 10.5:1 compression matches the factory OEM spec - this is a forged replacement at stock compression, suitable for builds seeking maximum reliability and strength under high boost upgrades rather than compression modification
• Professional installation required; full engine balance of rotating assembly is mandatory
• SC7710-8 denotes a complete set of 8 pistons (V8)

Features

• Forged high-strength aluminum construction from dedicated CP-specific forgings - substantially stronger than the OEM cast/hypereutectic pistons under elevated boost pressures from upgraded turbochargers, port injection, and fueling upgrades
• 10.5:1 forged piston at factory compression allows builders to maintain stock compression ratios while gaining the structural integrity and thermal resilience of a forged construction - critical in high-boost M177/M178 power builds rated up to approximately 1,600 hp
• Accumulator groove on the second ring land reduces ring flutter and improves ring seal under the sustained high cylinder pressures of upgraded twin-turbo AMG builds
• Dual forced pin oilers deliver twice the oil volume to the wrist pin bore under high-RPM, high-boost conditions
• Deep valve reliefs accommodate upgraded camshafts and ensure piston-to-valve clearance across a range of camshaft profiles used in M177/M178 performance builds
• Fully CNC machined and set-balanced to ±1 gram across all eight pistons
• Wrist pins included and pre-fitted at no additional cost
• Manufactured in the USA by CP-Carrillo

Specifications

• Part Number: SC7710-8 (set of 8)
• Application: Mercedes-Benz M176 / M177 / M178 4.0L V8 Biturbo
• Bore: 83mm (STD)
• Compression Ratio: 10.5:1
• Stroke: 92mm (stock M177/M178)
• Displacement: 4.0L / 3,982cc (V8)
• Made in USA

Included Components

• 8x Forged Aluminum Pistons (83mm)
• 8x Piston Ring Sets
• 8x Wrist Pins
• 8x Wire Lock Sets

Product Description

The CP Pistons SC7710-8 is a complete set of eight forged aluminum pistons for the Mercedes-Benz M176, M177, and M178 4.0L twin-turbo V8 engine family - powering the AMG C63, E63, GLC63, G63, AMG GT, AMG GT R, AMG GT 63, and the Aston Martin platforms using the AMG-derived powerplant. At 83mm standard bore and 10.5:1 compression, this kit replaces the OEM cast pistons with a forged aluminum construction at factory compression ratio, giving builders the structural strength and thermal resilience needed to support significantly elevated boost levels, upgraded turbochargers, port injection, and fueling systems without changing the engine's base compression characteristics.

The M177 (wet sump, used in AMG sedans and SUVs) and M178 (dry sump, used in the AMG GT sports car range) share the same 83mm bore and 92mm stroke, making SC7710 compatible across both platforms. Rated to support approximately 1,600 hp in high-end builds, these pistons include accumulator grooves, dual forced pin oilers, and deep valve reliefs as standard CP-Carrillo features. The full set of eight pistons, ring sets, wrist pins, and wire locks is included for a complete assembly package. Professional installation and full rotating assembly balancing are required.