Specialized are right to tout their elastomer Zertz inserts as a major boost in comfort, because the S-Works Pavé SL is the most comfortable post we've tested recently. Normal tarmac felt smooth, and potholed roads were less wince-inducing thanks, it seems, to the vibration absorbing suspension effect the Zertz insert claims to create.
Although weight is higher than on other carbon pins, the single-bolt clamp was easy to adjust and the all-metal construction should stand the test of time. With a wide range of fore/aft adjustment and a setback post available as well as this zero offset version, almost any riding position can benefit from increased long ride comfort.