Wossner 2.0 Pinto OHC 8V Non Turbo NA 90.9mm Forged Pistons Set. Compression Ratio: 12.0:1.Wössner are regarded by Europes 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 duresss 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. Image is a Stock image. Any Items That Are Out Of Stock Or have Extended Lead Times, May Take Slightly Longer Than Normal. The item "Wossner 2.0 FORD Pinto OHC Non Turbo NA 90.90mm Forged Piston Set" is in sale since Wednesday, November 27, 2019. This item is in the category "Vehicle Parts & Accessories\Car Parts\Engines & Engine Parts\Pistons, Rods & Parts". The seller is "shopbhp" and is located in Sevenoaks, Kent. This item can be shipped worldwide.