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Union Geardrop GH-142 Specialized
in stock1-2 weekdays
Atran Rack Front Cargo Black
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18,29 €
Pre-orderExpected 29/10/2026
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21,99 €
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Shimano XTR M9200 Hyperglide+ cassette 9-45T 12-speed
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Shimano FH-M510 Deore rear hub 135 mm 32 holes
Out of stockExpected 14/01/2027
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RockShox Pike Air Shaft 150 mm for 29" Solo Air
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Muc-Off Big Bore Lite 70 mm tubeless valves red
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CONTEC MERGE City Ergo handlebar grips 96mm / 140mm pair black/grey
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Sram PowerLink 8 Speed Silver 4 Pack
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BBB Skyscraber Seatpost 25,6 x 400 mm
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Gear hanger GH-143 Specialized
Union
12,29 €
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Shimano R8020 Nameplate Left
Shimano
9,29 €
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SRAM Piston Kit For Level TL/L
SRAM
16,29 €
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Shimano Dura Ace R9200 12-Speed Crankset 172,5mm. 50/34T
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Peatys x ChrisKing Tubeless Valve 42mm Red
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Black 700c/28" fork for v-brake 1 1/8" 280 mm steerer
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Shimano Cross/Road chainring 46T BCD110 silver
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Syncros Creston iC SL Aero 400mm 110mm integrated handlebar
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Sinter 036 brake pads for Tektro 2 Piston black
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Shimano XTR RD-M9250-GS rear derailleur 12-speed
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Bikone bearing kit ceramic for Shimano EVO 6806-24-C
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News

Spare parts for bicycles

There are an incredible number of different bikes, and almost all models are made up of different parts throughout several different brands. There are also a great many different spare parts for bikes throughout the categories of gear systems, brakes, handlebars, saddles, tires, tubes, handlebar grips, stems, locks, headsets, frames, front forks, and many other components.

 

Gear systems and brakes

Overall, there are two types of gear systems; external gears and internal gears.

External gear systems have a rear derailleur, cassette, or chainring, and sometimes a front derailleur if there are also gears on the front of the bike. Internal gears have a gear hub, often with 3, 5, 7, or 8 gears.

On external gears, you can have many more gears, since you multiply the number of chainrings at the back by those at the front. So you count all the combinations that can be done on the bike. At the back, there can be up to 12 chainrings at the front, so there are 1, 2, or 3 chainrings on the crankset.

Common to both internal and external gear systems is that there is a shift lever on the handlebars that makes it possible to change gears, most systems work with cable and wire pulls, while other newer systems are electronic.

 

Cockpit - handlebars, stem, seat post, and saddle

The handlebars, the stem, the seat post, and the saddle. The handlebar grips or the handlebars are often called the cockpit of the bicycle.

These components can come in many different shapes and styles, but the commonality is that almost all bicycles have these parts.

 

Handlebars

If we look at handlebars, there are different types of handlebars for different bikes. Handlebars are known to come in different shapes and sizes, such as downward-curved handlebars for racers. In contrast, there are also straighter handlebars that we know from mountain bikes, and in addition, the often more backward curved handlebars that are known for their use in city bikes and everyday bikes. The handlebars on BMX bikes also stand out a bit, as they are often much higher.

 

Stem

In general, there are two types of stems; the ahead-system, where the stem does not go down into the frame's crown tube but it's mounted on the outside of the front fork stem that goes up through the frame. In addition, there is also the "old" type, which is still available on many new bikes, where the stem goes down into the frame and connects to the front fork.

Both types are available in different lengths, in versions that are adjustable, and for different handlebar diameters.

When we talk about diameter, it is obvious to also mention seat posts. When you order a new seat post, it is important to check which diameter you need. There are some measurements that are widely used, but in addition to the most normal ones, there are a lot of other sizes. The most normal is 27.2mm and 31.6mm.

 

Different materials

The handlebars, seat posts, and stems are available in different materials such as carbon, steel, and aluminum.

Handlebar grips and handlebars are also available in different materials: foam, leather, plastic, rubber, cork, etc.

Their most important task is to give you the right comfort when you cycle.

 

If you have questions about the selection of spare parts or need help finding the right spare part, you are more than welcome to contact us.

Then we will do our best to help you.