Manley Platinum Series Piston Set
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Manley Platinum Series Piston Set - Ford Focus RS (LZ) / Mustang EcoBoost (FM / FN / FO)
Manley Platinum Series forged pistons for the 2.3L EcoBoost in the Ford Focus RS (LZ) and the Mustang EcoBoost (FM / FN, including the High Performance, and the 2024-on FO). They're made from 2618 alloy forgings with moly-coated skirts and a dished crown that gives 9.5:1 compression, so they suit a high-boost build that keeps the factory 94 mm stroke and 5.875 in rods.
Two versions are offered. The Standard Series comes with 0.150 in wall chrome moly wrist pins. The Extreme Duty Series is the same piston with thicker 0.210 in wall 9310 alloy pins for more boost and power. Every set includes Manley Premium Steel top ring sets and round wire locks, so it's ready to fit once the bores are finished.
Which set do I need?
| Part number | Bore | Piston weight | Rings included |
|---|---|---|---|
| 637000C-4 (Standard) 637000CE-4 (Extreme Duty) |
87.50 mm (standard) | 382 g | 46875-4 |
| 637001C-4 (Standard) 637001CE-4 (Extreme Duty) |
87.60 mm (+0.10 mm) | 384 g | 46876-4 |
| 637005C-4 (Standard) 637005CE-4 (Extreme Duty) |
88.00 mm (+0.50 mm) | 390 g | 46880-4 |
Note: Suits the 2.3L EcoBoost in the Ford Focus RS (LZ) and the Mustang EcoBoost (FM / FN, including the High Performance, and the 2024-on FO). Choose the bore size that matches your finished cylinder bore. Recommended piston-to-wall clearance is 0.0030 in, measured 1.100 in up from the bottom of the oil ring. Uses a 22.5 mm (0.886 in) wrist pin, which matches the Manley H-Beam rod set. Installation by a professional engine builder is recommended.
Features
- 2618 high-strength forged alloy, lightweight design
- Offset wrist pin for quiet start-ups
- Moly-coated skirts to cut friction and scuffing
- Dish crown: -8.2 cc, 9.5:1 compression ratio
- Pressure balance groove for better ring seal
- Valve reliefs take valves up to 1 mm oversize
- Standard Series: 0.150 in wall chrome moly pins; Extreme Duty: 0.210 in wall 9310 alloy pins
- Premium Steel top ring sets and round wire locks included
- Set of 4: one engine
Pairs Well With
- Manley H-Beam Connecting Rod Set - Ford Focus RS (LZ) / Mustang EcoBoost (FM / FN / FO)
- Manley Piston Ring Set - Ford Focus RS (LZ) / Mustang EcoBoost (FM / FN / FO)
- ARP Head Stud Kit - Ford 2.3 EcoBoost - Focus RS (LZ) / Mustang (S550) - 12-Point
- ARP Main Stud Kit - Ford 2.3 EcoBoost - Focus RS (LZ) / Mustang (S550)
- Cometic MLX Head Gasket - Ford Focus RS (LZ) / Mustang High Performance (FN) - 89mm Bore
Shop more: Manley | Pistons | Rods, Cranks and Bearings
Need help choosing parts? Contact our team at sales@chicaneaustralia.com.au.
Product
- Brand
- Manley Performance
- Series
- Standard (chrome moly pins) or Extreme Duty (9310 alloy pins)
- Bore sizes
- 87.50 mm (STD), 87.60 mm (+0.10 mm), 88.00 mm (+0.50 mm)
- Part numbers
- 637000C-4, 637001C-4, 637005C-4, 637000CE-4, 637001CE-4, 637005CE-4
Details
- Product
- Platinum Series forged piston set, set of 4
- Engine
- Ford 2.3L EcoBoost I4
- Material
- 2618 forged aluminium alloy
- Stroke
- 94.00 mm
- Rod length
- 5.875 in
- Compression height
- 1.291 in
- Dish volume
- -8.2 cc
- Compression ratio
- 9.5:1
- Piston type
- Dish, moly-coated skirt
- Piston weight
- 382 g (87.50 mm), 384 g (87.60 mm), 390 g (88.00 mm)
- Wrist pin
- 22.5 mm (0.886 in) x 2.250 in; 0.150 in wall chrome moly (42248) or 0.210 in wall 9310 (42548)
- Pin locks
- Round wire locks
- Piston-to-wall clearance
- 0.0030 in, measured 1.100 in from the bottom of the oil ring
- Included ring set
- 46875-4 (87.50 mm), 46876-4 (87.60 mm), 46880-4 (88.00 mm)
Contents
- 4 x Manley Platinum Series forged pistons
- 4 x wrist pins (Standard: 0.150 in wall chrome moly; Extreme Duty: 0.210 in wall 9310 alloy)
- 8 x round wire locks
- 4 x Manley Premium Steel top ring sets to suit the bore size

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