Bicycle

Used in the cycling section of the sport.

Bike rack

The device that holds bicycles in an upright position in the transition area.

Botton bracket

A hole in the base of a bicycle frame where the axle unit is attached.

Chainring

A large toothed ring within the chainset of a bicycle that drives the chain via the pedals and cranks.

Chainset

The chainwheels, chain and rear sprocket, as one, on a bicycle.

Crank

An arm, bolted to the crankshaft, which drives the chainwheels on a bicycle.

Crankshaft

The axle to which the cranks are attached on a bicycle.

Derailleur

The mechanism which moves the chain from one chainring or sprocket to another on a bicycle.

Goggles

Enclosed eyewear which prevent water from getting into a swimmer's eyes.

Nose clip

A clip which prevents water from getting into a swimmer's nose.

Pontoon

The floating apparatus from which triathletes dive to start the swimming leg.

Shoes

Sprocket

1. one of a series of teeth or projections on a wheel for transmitting or receiving motion to or from a corresponding tooth or part on a bicycle; also called a "cog".

2. a sprocket wheel; also called a "cogwheel".

Sprocket wheel

A wheel with sprockets; also called a "cogwheel".

Swim buoy

A marker used as a turning point in the swimming course.

Swimming cap

A lightweight, head-hugging and flexible cap which holds the hair in place and reduces resistance when swimming.

Wetsuit

A tight-fitting rubber suit worn to keep a swimmer warm and increase buoyancy.

(BOCOG)