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Individual parts, interfaces, and standards across drivetrains, brakes, wheels, suspension, and cockpit hardware.
Technical entry
Chain Damper
Chain damper is an informal term for components that reduce uncontrolled chain movement or isolate the rider and suspension […]
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ISCG-05
ISCG-05 is a standardized frame interface for mounting chain guides, bash guards, and related drivetrain-protection devices near a bicycle’s […]
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ISCG
ISCG is the original International Standard Chain Guide interface introduced in 2003. It defines the position of three threaded […]
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Oval Chainring
An oval chainring is a non-round chainring that changes the drivetrain’s effective gear ratio as the cranks rotate. Its […]
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Universal Derailleur Hanger (UDH)
The Universal Derailleur Hanger (UDH) is a standardized frame and hanger interface introduced by SRAM in 2019. It gives […]
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I-Spec
I-Spec is Shimano’s family of integrated handlebar mounts for attaching a compatible shifter or electronic switch to a brake […]
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Direct Mount Chainring
A direct-mount chainring attaches to a dedicated interface on the crank without using a separate bolt-on spider and conventional […]
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Head Tube Standards
Head tube standards define how a bicycle frame, headset, and fork steerer fit together. Compatibility depends on the frame’s […]
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Thru-Axles
A thru-axle is a removable wheel-retention component that passes through closed openings in a bicycle frame or fork, through […]
Read entryTopics intentionally overlap. A drivetrain component can also be a technology; an e-bike system can include components, software, and manufacturing concepts. Cross-listing keeps related reference material discoverable from more than one path.
Technical entries are one part of bicycle knowledge for the life of the bike. Discover bicycles in the Archive, use the Encyclopedia to understand them, then carry useful context into Bike Reports or My Garage.