{"product_id":"wossner-forged-high-compression-piston-set-renault-clio-197-200-2-0-f4r","title":"Wossner Forged High Compression Piston Set | Renault Clio 197 \u0026 200 | 2.0 F4R","description":"\u003ch2\u003e\u003cspan\u003eWossner Forged Piston Set for Renault Clio Mk3 RS 197 \u0026amp; 200 with 2.0 Renault F4R engine.\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eThese Wossner pistons are the perfect choice if you are considering tuning your 2.0 litre Renault Clio Mk3 197 or 200 engine (or Mk2 engine block with a Mk3 cylinder head) and are seeking more power. They are forged from 4032 alloy and are therefore able to better withstand the stresses and heat created by pushing the engine past factory limits (vs the cast oem pistons).\u003c\/p\u003e\n\u003cp\u003e**Please note that these piston requires use of the Wossner H beam connecting rod due to the narrower small end.**\u003c\/p\u003e\n\u003cp\u003eWossner pistons feature a unique moly coating on the skirts and are manufactured from a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then they might do with another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger than OE bore clearances.\u003c\/p\u003e\n\u003cp\u003eThe crowns of these Wossner pistons are also mirror polished to better resist detonation on high performance engines. Mirror polishing allows a more even spread of heat inside the chamber which will help prevent hot spots on piston crowns.\u003c\/p\u003e\n\u003cp\u003eThe price shown includes a full set of pistons, piston rings, wrist pins and pin circlips.\u003c\/p\u003e\n\u003cp\u003eThese pistons are available to suit a variety of bore sizes and have the manufacturer recommend piston:wall clearance machined into the piston itself.\u003c\/p\u003e\n\u003cp\u003e**Please note that these piston requires use of the Wossner H beam connecting rod due to the narrower small end.**\u003c\/p\u003e\n\u003cp\u003eThe compression ratio of 12.7:1 is indicative and is based upon using a factory head gasket and an otherwise untouched engine. The exact ratio will depend upon the specification of your engine and bore size chosen (specification factors such as head gasket thickness, if head has been skimmed, combustion chambers reworked etc will impact the ratio). The manufacturer specified bowl volume is shown below (which is constant across the available bore sizes) if you wish to calculate the exact compression ratio of your engine.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003ePiston Specification:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eCompression Height: 30.2mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMaterial: 4032 alloy\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWrist Pin Diameter: 21mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn built piston:wall clearance (excluding coating): 0.07mm\u003c\/span\u003e\u003c\/p\u003e","brand":"Wossner","offers":[{"title":"12.7:1 \/ 82.70mm","offer_id":63293275079043,"sku":"K9288DA","price":728.0,"currency_code":"GBP","in_stock":true},{"title":"12.7:1 \/ 82.72mm","offer_id":63293275111811,"sku":"K9288DC","price":728.0,"currency_code":"GBP","in_stock":true},{"title":"12.7:1 \/ 82.75mm","offer_id":63293681598851,"sku":null,"price":728.0,"currency_code":"GBP","in_stock":true},{"title":"12.7:1 \/ 83.00mm","offer_id":63293275144579,"sku":"K9288D030","price":728.0,"currency_code":"GBP","in_stock":true},{"title":"12.7:1 \/ 84.00mm","offer_id":63293275210115,"sku":"K9288D130","price":728.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0714\/7280\/8209\/files\/Wossner_F4R_730_High_Comp_Pistons-1.jpg?v=1725483940","url":"https:\/\/frogjammotorsport.co.uk\/products\/wossner-forged-high-compression-piston-set-renault-clio-197-200-2-0-f4r","provider":"FrogJam Motorsport","version":"1.0","type":"link"}