Quills stems come in different clamp sizes and even different quill diameters.

The most common clamp sizes are 25.4mm(SR, GB, Raleigh, ITM), 26.0mm(Mavic, 3TTT, some Nitto, some ITM), 26.4mm(most Cinelli pre-1995).

Lengths have been measured from the centre of the stem bolt to the centre of the handlebar clamp

Max Heights have been measured from the max insertion point to the top of the stem where the bolt is inserted.

25.0MM Clamp Diameter


25.4MM Clamp Diameter


26.0MM Clamp Diameter


Other Stems & Accessories

UK Shipping £4 per item.