Ford Focus RS Mk2 2.5 Turbo Wossner Forged Pistons & PEC Steel Conecting Rodkit
Specification:
| Part Number | K9489 |
| Engine Type | Focus RS Mk2 & Focus ST 2.5 |
| OE Bore Size | 83.00mm |
| Bore Sizes Available | 83.00mm - 2521cc 83.50mm - 2551cc |
| Stroke | 93.2mm |
| Dome/Bowl Volume | +11.5cc |
| Pec Comp. Ratio | Focus RS Mk2 - 8.5:1 Focus ST Mk2 - 8.5:1 |
| OE Comp. Ratio | Focus RS Mk2 - 8.5:1 Focus ST Mk2 - 9.0:1 |
| Comp. Height | 28.4mm |
| Valves Per Cylinder | 4 |
| Cylinders | 5 |
| Rod Configuration | H-Beam - G0164 I-Beam - G0258 |
| Con Rod Length C/C | 143.00mm |
| Small End Diameter | 23.00mm |
| Small End Width | 22.00mm |
| Big End Diameter | 53.00mm |
| Big End Width | 25.65mm |
*On a Focus RS engine, this will give the factory Compression ratio of 8.5:1
If used to convert a Focus ST engine, this will lower the compression ratio from the factory 9.0:1 to 8.5:1*
PEC rods are designed to withstand roughly 225hp per cylinder (typically 900hp on most 4cyl engines) and on the ARP 2000 series 3/8 bolts normally provided & have an 8,500 RPM safe operating limit (engine specific).
In some cases, we reccomend using the ARP custom age bolts available from us. This increases the hp threshold to 250hp per cylinder and raises the RPM limit to 9,000 however as every engine is different, these numbers are not guaranteed for every configuration.
What's in the box?
Wossner pistons:
- 5x Wossner forged pistons
- 5x Wossner piston rings sets
- 5x Wossner gudgeon pins
- 5x Wossner circlips sets
- 1x Wossner sticker
- 1x PEC piston installation guideline sheet
PEC connecting rods:
- 5x PEC forged steel connecting rods (choose between H-beam or I-beam style)
- 10x ARP 2000 series / ARP custom age 625 connecting rod bolts (choose from options)
- 1x ARP fastener assembly lubricant
- 1x PEC connecting rod installation guideline sheet