Bike Anatomy

Posted: May 10, 2010 in All about MTB

For users of bicycles for both daily activities and to sport the end it’s good to know pecan terms of parts of the ride your bike. The following description of the anatomy of a bike in general:


Top Tube: Head Tube connecting rod with the top of Seat Tube.

Down the Tube: Head Tube connecting rod with the bottom Bracket.

Seat Tube: Seat Post a buffer rod that is attached between the Top and Bottom Bracket Tube.

Seat Stay: rod frame that supports the rear wheel and connected to the top of the seat tube.

Chainstays: rods that connect the bottom frame with a mounting bracket installed where the rear wheels (rear dropout = earring). In full-suspension bike that does not use the Seat Stay this stem also called swing-arm.


Crankset: consists of the chainring, crank arms and bottom brackets as like as the explaining below:

  • Chainring / Chain wheel: surrounding jagged metal plate (teeth) as a chain holder, is located in the middle of the bike. Usually there are three types, namely; single crank (Downhill), double-crank (All Mountain or Freeride) and triple crank (XC).
  • Crankarms: arm swing that one end connects with the Bottom Bracket and the other end into the oar Pedals are installed.
  • Bottom Bracket: a liaison mechanism with the framework of a bicycle crank.

Freewheel: set of teeth (cassette / cogs) equipped with a rear idle rotation mechanism that is able to make the wheels keep spinning even when the bike is not being used.

Chain: is a chain that connects Chainring and Cassette and serves to channel the power of the pedal strokes to the rear wheels. Given a very vital role, taking care to clean and lubricate the chain regularly is very wise.

Front & Rear derailleur: is a mechanical device that serves to move the chain from various positions cassette (via rear derailleur) or chain rings (via front derailleur). This component is essential, particularly rear derailleur, so that regular maintenance is required.

Pedal: platform or footrests connected directly to Crank / Bottom Bracket


Handle Bars: horizontal rod that serves as a wheel and mounted on both ends plugged Stem lever, brake levers, and shifters.

Gear Shifter: is the regulatory mechanisms that drive derailleur, located on the left (rear-derailleur) and right (front-derailleur) driver shaft (handle bar). Specialized mountain bike shifter is divided into two types based on the method of propulsion, namely type Push / Trigger Shifter and Push-Push Buttons.

The first type by using the thumb and forefinger to press to draw the button. The second type uses only the thumb to press two different buttons when they wanted to move the teeth. While the third type is done by twisting the shifter portion of the handle grips to change the position of teeth.

Handle Grip: rubber which serves to facilitate the grip and avoid slipping on the handle bar, while helping to reduce vibration caused by road surface.

Stem: rod connecting the handle bar with a steering head tube or tubes, with length and angle are varied to suit the rider’s position.

Head Set: rotating mechanism attached to the Tube to connect Fork Head and Stem.

Head Spacer: metal ring that serves to regulate the height Stem position.

Brake Lever: is a lever arm which functions to perform braking.

Brakes System: generally fall into two categories, namely Rim-mounted brakes, and hub-mounted brakes.

  • The first type commonly known as V-brakes, cantilever, and Caliper system that works by pinning Rim (wheel). The advantage of the RIM-brakes because of its light weight, but less optimal when the ream in wet conditions or covered in mud.
  • The second kind, typically using a drum or disc technology. Disc-Brake Specific types are currently quite popular and affordable, and very commonly used on mountain bikes, for optimum performance almost every condition.

Hydraulic brakes: most of the existing brake-operated systems using steel cables drawn using the Brake Lever. While working with hydraulic brakes fluid system similar to those used by cars, and their operations easier, but requires a separate skill in maintaining it. This system is often applied to the disc-brake system, although it is also available for the cantilever system.

Disc Brake: brake system which works using a steel plate mounted on the Hub System.


Front Shock: front suspension which serves to dampen vibrations from the road off road conditions or corrugated so that it can significantly improve control and comfort.

Rear Shock: rear suspension which serves to dampen vibrations from the extreme off road conditions or corrugated so that it can significantly improve control and comfort which used for XC, Free Ride, or Down Hill bikes.


Alloy Wheels for all quality mountain bikes have been using aluminum rims, because its light weight and does not rust, besides the ability pengeremannya also better.

Rear & Front Hub: the middle of a wheel which rotates with the bearing there is a mechanism where the spokes mounted therein.

Bearings: is a small steel ball, usually called bullet / pellet to reduce the friction of two metal moving, exists in the hubs, bottom brackets, head sets and Pivot.

Spokes: iron wire connecting the Hub and the Rim, with a voltage regulator using a nipple located on the Rim. There are two types of materials commonly used: (1) Stainless Steel, the famous strong enough and does not rust, (2) Double-butted, usually somewhat smaller in the center without affecting the strength, yet lighter weight.

Quick Release: rod locking bicycle wheel with the framework, and should be made of metal with a working system that is safe and reliable.

Tyre, rubber tires are made of materials and the contact area designed specifically to get traction and durability desired.

Inner Tube: shaped thin rubber balloon that serves as an inner tube.


Saddle, saddle or seat cushion when riding a bicycle so that the butt still felt comfortable in addition to reducing the bottom of our tiredness. Increasing number of female cyclists, has made the producers to produce saddle bicycle saddle for women.

Seat Post: saddle pillar which is input into the seat tube.

Seat Clamp: together with a quick release, serves to lock the seat post in the seat tube when it has achieved the ideal saddle height.

  1. vegarec says:

    it’s nice knowing! have you been in hafjell in norway?

    • hbrcustom says:

      Thank you. I’ve never been to Hafjell in Norway. My bike community just cycling in Yogyakarta area in Indonesia. By the way, have you ever been to Yogyakarta for cycling?

  2. Chris says:

    I am from a book publisher.
    We are hoping to use the shock breaker diagram into a book.
    Could you let me know who I could contact for permission.
    Thanks ,

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s