The parts maker 3T has been making bicycle parts since 1961. Originally named 3TTT for Tecnologia del Tubo Torino (Turin Tube Technology), the firm began by making steel handlebars. By the 1970s 3T products had switched to light alloys and were very well regarded. They were used by many top-end bike makers and successful pro riders.

• The Mutant Quill stems on this page were produced in the early-1990s
• 26.0mm bar clamp diameter
• Mutant stems came in both black and silver finishes
• Removable face plate makes changing bars with tape and levers a snap
• Mutant stems were also produced in a threadless version

3T Mutant Quill black stem. None in stock