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Ford Focus ST 2.5 Duratec I5 Turbo Wossner Forged Piston Kit

K9276 Size Options
£ 779.99
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 Ford Focus ST 2.5 Duratec I5 Turbo Wossner Forged Piston Kit

Wössner are regarded by Europe’s leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress’s of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston.

This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances.

The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent "hot spots” on piston crowns. Price includes all piston rings and gudgeon pins.


Technical information is sourced from Wossner's latest catalogue

Part Number K9276
Engine Type Duratec I5 Turbo
OE Bore Size 83mm
Bore Sizes Available

83.00mm - 1598.84cc

83.50mm - 1618.89cc

84.00mm - 1639.06cc

Stroke 93.2mm
Dome/Bowl Volume -
Wössner Comp. Ratio 8.5:1
OE Comp. Ratio 9.0:1
Comp. Height 28.40mm
Valves Per Cylinder 4
Cylinders 5

Available Options:
K9276 Size Options:
  • 83mm - K9276DA  
  • 83.5mm - K9276D050  
  • 84mm - K9276D100