Fork end

They were reintroduced in response to lawsuits supported by experts including John Howard,[5] in cases where incorrectly adjusted quick release wheels came out of the forks.

Lawyer tabs are designed to compensate for the fact that many riders do not know how to operate a quick release properly: some riders treat them as a folding wing nut, and others do not tighten them enough for fear of snapping them or shearing the skewer (both are not likely given the normal range of human strength, and the mechanical advantages involved, as long as the skewer is not damaged or flawed).

A correctly secured quick release is unlikely to be ejected from the fork end in normal use where rim brakes are in use, although recently there has been some evidence, notably from James Annan, a British scientist working in Japan, suggesting that the moments in disc brake systems can cause quick-release front wheels to be ejected past the lawyer tabs.

This is controversial, and the fork manufacturers have not admitted a fault, although there is some evidence that they may accept the principle, and advice on checking quick release tension has been strengthened.

[8] Fork ends and dropouts may support one or more eyelets, small protruding tabs with holes, often threaded, to facilitate the mounting of racks and fenders.

Some rear track fork ends have threaded devices ("chaintugs") to aid in setting the proper chain tension.

Tightening the bolts on each side causes the axle to be pulled backwards towards the open fork end, tensing the chain.

Chaintugs can also solve the problem of "axle creep" on hard-ridden fixed-gear bicycles, especially those with hard chromed fork ends, which may not offer adequate grip for the serrated track nuts.

Most non-steel framed bikes have a separate removable derailleur hanger, generally made from aluminium which is bolted to the dropout.

Some notable features are that it is designed to prevent the chain from falling of the smallest cog, and that the hanger can rotate backwards in the event it hits something in order to protect the frame and derailleur.

[15] SRAM has also released a special derailleur dubbed 'Transmission' which does not attach to a hanger, but instead directly fits in a UDH-ready frame, and hence is "UDH only".