Black SRP: £69.99
Length 350mm diameter 27.2mm Layback 10mm ACSP35BK272
Length 350mm diameter 31.6mm Layback 10mm ACSP35BK316
Length 270mm diameter 27.2mm Layback 10mm ACSP27BK272
Length 270mm diameter 31.6mm Layback 10mm ACSP27BK316
Silver SRP: £69.99
Length 350mm diameter 31.6mm Layback 10mm ACSP35SR316
Length 350mm diameter 27.2mm Layback 10mm ACSP35SR272
Length 270mm diameter 31.6mm Layback 10mm ACSP27SR316
Length 270mm diameter 27.2mm Layback 10mm ACSP27SR272
Discontinued sizes or cosmetically flawed versions of these seat posts may be available at our USE Factory Outlet store
The Alien has continually evolved with the latest being the Alien Cyclops. Using a larger (3mm hex key) single bolt central to the clamp design, the Alien Cyclops makes adjustment easier and faster. The Alien Cyclops has a unique one-key release mechanism that makes re-adjustment as simple as a turn of the hex key.
The Aliminum Alien is used by World-class athletes, Tour de France King of the Mountains and multiple MTB World Cup victories.