Non-PRO English to Spanish Tech/Engineering

A friend just asked me to translate a series of "advertising" phrases related to the bicycles they sell... I'm going to post several of them to get someone elses opinion of what I've come up with....this is the first one, and that's all it says: Pressure relief groove... meaning the bicycle has a pressure relief groove..I came up with "ranura para aliviar la presión" but it may be to literal..any ideas?
Thanks!