4.6 / 5.4 FORGED Pistons, Rings & Rod Kit Combo

Turn you engine into a indestructible, boost ready BEAST with this kit from MMR. Planning a s/c, turbo or high HP build, these are a MUST!

Kit Features MANLEY Forged Pistons ( All compression ratios ) ,MANLEY 4340 Forged H beam Rods and Total Seal Piston Rings . Designed to handle up to 1000 HP.  Works with ALL factory crankshafts. Available for Stroker and Non-stroker (4.6) applications and 5.4. For those comparing this kit to MMR kit PN# OPT3, the main difference is this kit has MANLEY connecting Rods.


1996-2004 Mustang GT

2005-2010 Mustang GT

1996-2004 Mustang Cobra

1996-2010 5.4 F150 / F250 / LIGHTNING  

2007-2015 GT500


Manley Forged Pistons  (select Bore & Dish size below)

Manley Forged H Beam Connecting Rods

Manley Chromoly Piston Pins

Total Seal file fit Rings

Due to variances in engine builder opinions, Pin bushing and Bearing bore may require final sizing to suit your engine builders preference. Rod Bolt torque 55 FT LBS NEVER USE A IMPACT GUN TO LOOSEN OR INSTALL ROD BOLTS!!



  • Model: OPT4


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Piston Options

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