USE Alien Cyclops Aluminium 350mm Rigid Seatpost
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What the stock status means
- In stock On the shelf in our own warehouse. Order before 2pm and it is despatched the same working day; bikes we build are built, safety-checked and despatched in 2-3 working days.
- In stock with our supplier Not on our shelves, but our supplier has it or it is already on its way to us. We bring it in as soon as you order, and the despatch estimate shown allows for that.
- Out of stock Neither we nor our supplier has it right now. Where a date is shown, more is on order and you can order now to secure one from that delivery.
- Stock to be confirmed Not on our shelves, and our supplier does not send us stock figures for it, so we cannot say how soon we could get one. Use "Check availability" and we will ask them and email you back.
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In-stock items ordered before 2pm are dispatched the same day. Free delivery over £50.
Thirty-day returns, free from any UK address.
About USE
Ultimate Sports Engineering (USE) was founded in 1990 and is renowned for the suspension seatpost (winning Olympic gold, King of the Mountains at the Tour De France) USE is based in Bury, nestled in the heart of the South Downs National Park.
Shop all USEDetails
The USE Alien seat post remains market leader! 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. Ultimate lightweight seat post, designed for the performance rider to perform on the world stage (2 X Tour de France King of the Mountain and multiple MTB World Cup victories).
- Chosen by the worlds best athletes who do not compromise from World-class athletes through to amateurs
- Utilises the latest aluminium manufacturing techniques
- At the forefront of technology and engineering excellence
- Extensive FEA development & In house testing
- Development and testing support from Giant, Specialized and Cannondale
- Tube - Full aluminium construction - laser etched
- Head / Clamp - Extruded (except the bolt on the clamp) 7075 T6 Aluminium
- Anodised Aluminium parts - up to 45 microns
- 3M bonding techniques and methods
- Laser etched graphics

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