Modalworks M177 Forged Pistons
The Modalworks M177 Forged Pistons are custom-engineered by CP-Carrillo to Modalworks specification for the Mercedes-AMG M177 4.0L V8. Built to handle the high cylinder pressures of big-turbo, high-boost applications, they are the perfect companion to our M177 H-Beam Connecting Rods for a fully forged rotating assembly.
Key Features:
CP-Carrillo Forged Construction
Custom forged pistons manufactured by CP-Carrillo to Modalworks spec at 83mm (3.2677") bore, with underhead milling for optimized weight and crown stability under extreme cylinder pressure.Dual Coating Package
Every piston is finished with a dry-film skirt coating for reduced friction and cold-start protection, plus a ceramic thermal barrier coating on the crown to reflect combustion heat away from the piston — critical on a twin-turbo engine under sustained boost.Upgraded Wrist Pins
0.866" x 2.250" wrist pins in 9310 alloy steel with .200" wall thickness, chamfered for wire locks — a significant strength upgrade over standard pins for high-output builds. Wire locks included.Performance Ring Pack
PVD-coated 1.2mm steel top ring, 1.2mm ductile iron Napier second ring, and 2.0mm gas-nitrided steel oil ring — a low-friction, high-seal combination built for boost.Complete, Ready-to-Assemble Set
Supplied as a full set of 8 with pins fitted, rings, and wire locks — everything needed for assembly.
Compatible with a range of Mercedes-AMG M177 models, including the C63, E63, GLC63, GT63, and others. Pair with Modalworks M177 Forged Connecting Rods and M177 Performance Head Studs for a complete built bottom end.
