Complete set of XP pistons V3 70.25 mm - 848 cc

Complete set of three 70,25 mm XP forged tuning pistons - Generation 3. The Generation 3 pistons is forged by Wössner in a high silicone alloy to reduce the termal expansion so that a smaller piston play can be used making the engine less noisy when cold. The generation 3 pistons is also about 10g ligher than the gen 2 pistons. These pistons can often be used in standard bore 850cc engines with worned or slightly damaged bores as the 0,25 mm overbore often will be clear the cylinders out. 3 mm lower from center piston pin to piston top. This gives an built in exhaust and transfer ports increase by 3 mm and you lower the bottom of the ports reducing the risk of grinding into the cooling galeries. Approved for Vintage Racing.