If the lorry hadn't hit you would the shorts have been torn and would the helmet be damaged? No, therefore they owe you at least a replacement helmet and pair of shorts of equivalent quality to those you had, regardless of age.
Just keep reiterating that they were decent quality goods and undamaged before the collision.
Whatever you do don't admit that your helmet is older than 3 years. I think thats the recommended time after which you should buy a new one, could be wrong though. Probably depends on manufacturer.
If the lorry hadn't hit you would the shorts have been torn and would the helmet be damaged? No, therefore they owe you at least a replacement helmet and pair of shorts of equivalent quality to those you had, regardless of age.
Just keep reiterating that they were decent quality goods and undamaged before the collision.
Whatever you do don't admit that your helmet is older than 3 years. I think thats the recommended time after which you should buy a new one, could be wrong though. Probably depends on manufacturer.