Wossner Subaru Impreza WRX STI Ver 9 2003 9:1 Forged Piston Kit Bore Size:93mm – K9457D100 500 RPM safe operating limit

500 RPM safe operating limit (engine specific)

87mm – K9410D100

80mm – K9222DA

Engine Code: B17A1Bore Size: 81

6 16v Forged Piston Kit includes the following components:

Wossner Subaru Impreza WRX STI Ver 9 2003 9:1 Forged Piston Kit Bore Size:93mm – K9457D100 500 RPM safe operating limitThis Wossner Subaru Impreza WRX STI Ver 9 2003 9: 1 Forged Piston Kit includes the following components: 4x Wossner Forged Pistons Piston Rings Pins and Clips Specs: Build years: 2003 2007 Engine Code: EJ205Bore Size: 92. 5mm K9457D050, 92mm K9457DA, 93mm K9457D100 Stroke: 75mmCompression Height: 31. 5mmOEM Comp Ratio: 8. 0: 1Number of Rings: 3Clip Part Number: CA23 Pin Part Number: WP094 Cylinders: 4 Valves Per Cylinder: 4 These pistons will fit both