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Posted 20 hours ago

Zoom Suspension Seat Post - Black, 31.6x350 mm

£9.9£99Clearance
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About this deal

You want a seatpost long enough for your height needs on your bike. A seatpost that’s too short can’t can’t be made longer. A seatpost that’s too long, on the other hand, can be cut to be made shorter. Suspension or Damping Seatpost length ranges anywhere from around 75mm to more than 400mm, though most posts come in lengths between 300mm and 400mm. Finance is subject to application, financial circumstances and borrowing history. Performance Cycling Limited FRN: 720557 trading as Tredz are authorised and regulated by the Financial Conduct Authority. We are a credit broker not a lender – credit is subject to status and affordability and is provided by Mitsubishi HC Capital UK PLC. Terms & Conditions Apply. left), 30.9mm (middle) and 31.6mm (right) seatpost diameters are most common. Kaden Gardener / Our Media

Every brand seems to have its own take on the saddle clamp design, which usually includes a bolt at the front of the head and another at the rear, although some have just one bolt. A narrower post will typically be lighter and can offer improved comfort, because it’s able to flex more easily than a stiffer, oversized post. 30.9mm seatpost A wider-diameter seatpost offers, in theory, improved durability over an equivalent seatpost in a narrower diameter. Most saddles have round rails, whereas some have oval rails. You may need a seatpost with a clamp design that’s deeper to accommodate oval rails. Like handlebars, wheels, and nearly all other bike components, seatposts come in a variety of materials, the most common being aluminium and carbon fibre. As always, carbon commands a higher price tag, but it usually weighs less and can be constructed in a way that dampens more vibration while maintaining directional stiffness in a way that will benefit the rider.

As with all aerodynamic upgrades in cycling, it is a culmination of marginal gains that will start to make noticeable differences to your riding. So, yes, seatposts can make a difference but, in most cases, aero seatposts will come in a proprietary design to fit a specific bike, making upgrade options considerably limited. Do carbon seatposts make a difference? One of the most important considerations when buying your next seatpost, is the diameter of the seat post - and how this diameter works with your bike frame. The diameter must fit the internal diameter of your frame - which is typically 27.2mm on a standard frame, or either 30.9mm or 31.6mm on an oversized frame. Modern bike seatposts are built from various materials, with alloy and carbon being the two most common. A quality alloy seatposts will boast a lightweight profile, whilst also benefiting from being durable and cost efficient. A high-end carbon post is a necessary component for serious cyclists looking to squeeze every last bit of performance out of their machine. Competitive cyclists needing to precisely adjust their seatpost height on the fly should browse our range of dropper posts. At 300mm in length, the Enve seatpost is available in 0mm, and 25mm-offset versions. While quite a few carbon posts have a metal clamp head bonded on the top, the Enve post is carbon through and through. Some bikes even go as narrow as 25.4mm, Cannondale being a case in point. A skinnier post will provide a bit more flex, and therefore a slightly more comfortable ride, while a fatter one will be more robust and add stiffness for additional power transfer.

and 31.6mm are the most common seatpost diameters, with 34.9mm also emerging as a popular size for mountain bikes. 27.2mm seatpost Road and gravel bikes tend to have a longer seat tube than mountain bikes, so usually requirer a shorter post of around 300 to 350mm. Mountain bikes typically leave more of the seatpost exposed above the frame, so require a longer post. Some seatposts, particularly those for road bikes, try to add in some sort of suspension or damping mechanism to reduce the amount of vibration that reaches the saddle—and ultimately, your rump. Some of these are passive, relying on the materials in the seatpost, while others are active, with joints, springs, and pistons. Dropper Mechanism

Cane Creek Thudbuster LT G4 Elastomer

Best Lightweight Gravel/Road Dropper: FOX Racing Shox Transfer SL 27.2 Performance Elite Dropper Seatpost For a dropper post to work, there needs to be sufficient space in the frame’s seat tube. This is particularly an issue with smaller frame sizes, which often have shorter-travel dropper posts as a result. If it has a round seatpost, however, you are likely to have far more options – but diameter becomes all-important. The two standard diameters are 27.2mm and 31.6mm and all of the seatposts featured in the guide will fit one of those two sizes, while some have more options in between. A shim should work fine with a standard seatpost clamp that attaches around the outside of the bike’s seat tube, but it might not work properly to hold your seatpost in place without it slipping if you’ve got a more complex clamp design. In short, no. Seatposts are an area where bike manufacturers seek to make gains in weight, aerodynamics and comfort – so there are a whole range of different types that come with different bikes.

The business end of the seatpost is its head, which has a clamp mechanism to attach it to the saddle rails. Most of the best road bike saddles use a two-rail system, however not all two-rail saddles are compatible with all seatposts. Saddles with alloy rails will have 7mm, round rails, while most carbon-railed saddles have 7x9mm oval rails. There are varying degrees of complexity in getting the clamp set up and adjusted properly, from slightly awkward to downright infuriating. The longer seatpost length of mountain bikes means rigidity and robustness are important, whereas with the shorter seatposts on road bikes, compliance and ride comfort are greater priorities. 34.9mm seatpost The seatpost is one of the most important parts of your bicycle. A good seatpost supports the majority of your weight on the bike and must be able to withstand that weight while maintaining the appropriate angle for your ride and without moving. While the seatpost your bike comes with is likely adequate for the job at hand, for those looking to upgrade their kit or replace one that broke, a new seatpost offers an opportunity to cut weight and even add some suspension to reduce vibration, making it easier to ride farther. Best Bike SeatpostsIt’s usually made of metal, even in a seatpost with a carbon shaft, although some carbon seatposts are one-piece and include a carbon head. Mountain bikes typically have a lower standover height than road bikes, leaving more of the post exposed, so a wider post is preferred to improve strength. 31.6mm seatpost The most common size on modern road bikes and gravel bikes is 27.2mm. These posts can be found on some MTBs too, although the size is confined mainly to a limited number of cross-country mountain bikes. If you want to fit a thinner seatpost to your bike, you can buy shims that fit between the frame tubing and the seatpost. You can’t fit a wider seatpost than that your bike is designed for.

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