City bike seat post Black Friday on sale

Rigid, suspended or telescopic: which seat post for cycling in the city?

The rigid post, lightweight and maintenance-free, is chosen based on diameter and length. The suspended post is for those who ride sitting upright and take the bumps of cobblestones and curbs through their back. Two principles coexist here: the spring or air cartridge that slides in the tube, known as the "candle" post, and the articulated parallelogram under the saddle, which keeps the seat level as it compresses.

The telescopic post lowers the saddle at the push of a button on the handlebars. Originally designed for downhill biking, it is also useful in the city: XLC presents its SP-S13, telescopic and suspended, as a way to plant both feet flat when stopping without leaving the saddle.

Measurements to check before ordering

• Diameter: from 25.4 to 34.9 mm on this page, with intermediate measurements like 28.6 or 30.6 mm, to be adhered to within a tenth.
• Length: the minimum insertion mark must always remain hidden in the frame.
• Cyclist's weight: XLC states its SP-S13 can support from 50 to 125 kg, Cane Creek lists its Thudbuster LT up to 113 kg.
• Rails: the Thudbuster LT only accepts round metal rails, not oval or carbon rails.

Discounted seat posts: read the crossed-out price for equal measurements

The label gives the measurements, and discounts are measured based on equal specifications. At XLC, the SP-T20 comes in 27.2, 30.9, 31.6 and 34.9 mm, with a travel range of 100 to 200 mm indicated at the top of the name; the SP-S13 is available in 100 or 120 mm, and the SP-S14 is the version with internal cable routing. Kalloy Uno offers its rigid posts in lengths of 300, 350 or 400 mm. Once you determine your diameter, length, and travel, compare the crossed-out price of this variant with its displayed price: the difference with another length or diameter doesn’t reflect the promotion.

What the urban selection includes

The listing mixes city posts with many telescopic mountain bike posts, from the SP-T20 by XLC to the Transfer by Fox, along with some pivotal BMX posts. The former belong in mountain bike seat posts for Black Friday, while the latter fits in the BMX posts of the offer; the seat posts in Black Friday cover all practices. A new post often goes hand in hand with one of the city seats in Black Friday, among the wheels and components of the event. Throughout the year, the page for urban seats and seat posts details height adjustment; then, clearance sales and new arrivals take over.

Which seat post brands during the event?

Kalloy Uno, a brand from the Taiwanese manufacturer Kalloy, covers a wide range of diameters in aluminum, including the less common sizes of 28.6 and 30.6 mm, useful for reviving an old bike.

XLC offers the SP-S13 and SP-S14, suspended telescopic posts adjusted to the rider's weight and delivered with their handlebar control.

Ergotec, a brand from the German supplier Humpert, assigns each of its posts a Safety Level, from city bikes to electric bikes; the page presents a suspended post for hybrid bikes.

Ritchey features on its Classic and Comp posts, with 25 mm of setback, a clamp with two screws aligned with the rails.

Cane Creek builds the Thudbuster LT around a parallelogram and a tool-free interchangeable elastomer, for 90 mm of travel designed for daily commutes and electric bikes.

Frequently asked questions

When do seat posts go on Black Friday sale?

The Black Friday itself falls on the Friday after Thanksgiving, leading up to the holidays. At Vélo-Store, discounts on seat posts aren't limited to just that day: they span the entire month of November.

Where to find the diameter of a seat post?

On the shaft of the current post, often near the insertion mark. If it has worn off, a caliper will give the measurement to the tenth of a millimeter: just a few tenths of difference can prevent a secure fit.

Which suspended seat post should I choose?

Start with your weight and posture. The sliding spring, simple and compact, softens bumpy roads; the parallelogram provides more travel while keeping the seat flat; the air cartridge allows for precise adjustments at the pump. Always respect the brand's weight range.

Is a telescopic post useful on a city bike?

It allows you to lower the saddle when stopped to put your feet on the ground, then raise it to pedal. You need a deep enough seat tube and space on the handlebars for its control.

How can I tell if a seat post deal is worthwhile?

Compare identical references: same diameter, same length, same travel, control included or not. A post that doesn't fit your frame is never a good deal.