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)