Wössner forged piston kit Renault Clio Williams and Mégane F7R

Wössner forged piston kit for Renault Clio Williams 2.0 16V and Mégane 2.0 16V with a naturally aspirated F7R engine. Two compression ratios are offered to suit the engine preparation.

11.2:1 configuration: stated dome volume +4.35 cm³. 12.5:1 configuration: stated dome volume +9 cm³. The original value listed by the supplier is 10:1. Select the compression ratio and bore to match the prepared engine.

Bores 82.7 / 83 / 83.5 / 84 mm in both configurations. The 82.75 mm size is offered only at 12.5:1. Listed oversizes are 0.30 mm for 83 mm, 0.80 mm for 83.5 mm and 1.30 mm for 84 mm.

Documented common dimensions: 93 mm stroke, 21 mm pin diameter, 30.7 mm compression height and 144 mm connecting rod centre distance.

Check the engine code, actual bore, machining and fitting clearances before ordering. Different sizes are not interchangeable by default. Compatibility is not confirmed for F4R engines or all Mégane or Clio models. Image for reference only; included accessories are not detailed in the source consulted.