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Shimano Diaphragm for Left side in ST-R9120 Shift lever
in stock1-2 weekdays
KMC cassette Shimano 1/8 wide 19T
KMC
6,69 €
Pre-orderExpected 27/03/2026
Shimano M375 mechanic disc brake silver
in stock1-2 weekdays
Shimano Rear Brake Adapter Post/Direct 140mm
in stock1-2 weekdays
SR Suntour dust seal SF9 NCX
SR Suntour
7,29 €
in stock1-2 weekdays
Rock Shox service kit for REBA and SID 2012 - 2014
in stock1-2 weekdays
PRO Koryak 3Five Alu MTB handlebar 80 cm 35mm 40mm rise
Out of stockExpected 20/05/2026
Truvativ XX Chainring Bolts Set 2x4
Pre-order5-10 weekdays
3 x Tire and Tubes for Cargo Bikes 24 x 2.00
in stock1-2 weekdays
XLC Comfort Grips
XLC
16,29 €
in stock1-2 weekdays
Shimano Alfine 11 shift lever black
in stock1-2 weekdays
Kryptonite Evolution Mini-7 red
Kryptonite
50,99 €
in stock1-2 weekdays
Gates CDX chainring 39T for belt drive singlespeed BCD 104mm 4 hole
in stock1-2 weekdays
Schwalbe tube 27.5-29" (40/62-584/635) 60mm SCV Clik valve SCV19
in stock1-2 weekdays
Shimano Dura-Ace FC-R9100 Chainring 42T
in stock1-2 weekdays
Continental Contact Spike 700x35 (37-622) 240 Spikes
in stock1-2 weekdays
Ergotec Patent Seatpost 28.0 x 400 mm Black
Out of stockExpected 16/06/2026
Shimano Cues U4000-2B Crankset 36-22T 170mm
in stock1-2 weekdays
Shimano Nexus 4 gripper for SG-4C30 B-type
in stock1-2 weekdays
5 Pack SRAM Stealthamajig Fittings in Set for Hydraulic Disc Brakes
in stock1-2 weekdays
Union Gear Hanger type GH-161
Union
12,29 €
in stock1-2 weekdays
Shimano XT M8100 single crankset 1x12s, 180mm, without chainring
in stock1-2 weekdays
Shimano SG-C6011-8R Insert
Shimano
111,99 €
in stock1-2 weekdays
XLC Road track/fixie pedals
XLC
16,29 €
Out of stockExpected 26/06/2026
Promovec Carrier Frame, 6 black 28"
in stock1-2 weekdays
Shimano Cues U4000-2B Crankset 36-22T 175mm
in stock1-2 weekdays
Rock Shox Rebound Damper Knob Kit - 29'' For SID B2
in stock1-2 weekdays
Shimano Cues SL-U8000
Shimano
51,99 €
in stock1-2 weekdays
Bike Attitude chain guard stainless steel black
Pre-orderExpected 30/03/2026
Shimano Deore XT Rotor/Disc 140 mm Centerlock
Pre-orderExpected 26/03/2026
Shimano XT M8100 Single Crankset 1x12s, 175mm, without Chainring
Pre-orderExpected 31/03/2026
Shimano Deore M5100 Front derailleur for 2 chainrings Clamp mounting
in stock1-2 weekdays
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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.