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Union Geardrop GH-084 Specialized
in stock1-2 weekdays
Union Geardrop GH-125
Union
10,29 €
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Schwalbe Magic Mary 29 x 2.25" Super Trail Addix Soft
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SR-Suntour Raidon XC 29" RLR 100 mm Black
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Peatys Holeshot BioFibre Tubeless Liquid 5L
Peatys
115,99 €
Out of stockExpected 08/10/2026
Token rear hub axle 12x142
Token
28,99 €
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Bracket for luggage rack black 260 mm
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Shimano brake outer cable M-System 40 meter MTB black
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Shimano Deore HB-M5100 front hub 100mm 36 holes
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CeramicSpeed Alpha Gravel bottom bracket BBright 24mm
Pre-order3-6 weekdays
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Shimano Deore LX cover for left base on shifter model ST-M580
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Hutchinson Blackbird tube folding tire road 700x30c tan
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Pirelli Cinturato Gravel M TLR Performance folding tire 700x35c black
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Sram eTap HRD Hydraulic Stealthamajig
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Union Geardrop GH-127
Union
9,29 €
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SKF Seal Kit Marzocchi 38 mm.
SKF
68,99 €
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Pirelli P Zero Race 700x26C Classic Race Tires
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Shimano Deore M6120 Crankset 30T 1x12S 175mm
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Shimano Dura Ace ST-R9250 Hoods Black
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Mitas Classic Inner Tube 23/28-622 with 60mm Race valve
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LTWOO A12-X Shifter 1x12 sp right
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DT Swiss Spoke Kit for H1900 Spline 29"
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Chaoyang Swift wire bead tire 16 x 1,75 black
Pre-orderExpected 27/08/2026
Bikone DCTech bottom bracket BB86-92 hub oversize with steel bearings
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Shimano GRX cassette body micro splined for rear wheel model WH-RX880
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Schwalbe Winter 700x35c
Schwalbe
24,99 €
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CeramicSpeed Alpha Gravel bottom bracket BBright 30mm
Pre-order3-6 weekdays
Continental Contact Spike studded tire 700x40c with 120 studs
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RockShox Scott compression damper kit til RLT3
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Pirelli Cinturato Gravel M TLR Performance folding tire 27.5x1.65 black
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Muc-Off Big Bore Lite 45 mm tubeless valves pink
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XLC bearing 6902 2RS O15x28x7 mm
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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.