Wossner Piston are a forged piston made in Germany. They are original fitment for many European manufactures.The factory is very modern with newly acquired forging facilities. Wossner use 4032 (T6) and 2618 alloy in all their pistons. Once forged pistons are then machined to the highest standards using the latest CNC machines, Piston kit are supplied with rings, pin and a pair of clips which are also available separately if needed. Select from A size std or B size .01mm larger. Cylinders wear over time so if your cylinder is about 100 hours old or older order a B, if you a freshish cylinder order an A, most of the time either will work, both will be within spec. For the CR 250 we supply the twin ring piston which seems to be more popular than the single ring. If you need different sizes please call we can get them in for you.
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