Famed component maker Cino Cinelli's brother Giotto had been making steel stems in Florence, Italy in the 1930s. The brothers moved the business to Milan after the Second World War.

Cino Cinelli began making alloy stems in 1963 (the 1A model) and it wasn't long before the Cinelli stem was the choice of serious athletes and connoisseurs. Different models came out over the years, including the 1R featured on this page.

The 1R, with its hidden, internal bar clamp was a big hit when it came out in the late 1970s. The Cinelli 1R stem has a bolt on the stem's underside that pushed a plate against the bar. It was both brilliant and beautiful. Production of the 1R ceased sometime in the later 1980s.

The 1R was produced in both silver and black. Most were made for Cinelli's proprietary 26.4mm bar diameter, but some were made for 26.0 bars. All the stems on this page are for 26.4 bars.

Here's an old ad for Cinelli bars and stems when they were made of steel.

Cinelli 1R 10cm x 26.4 silver stem. Used, $65.00/each

Part# cinelli-1r10-u65

From the front

Close-up of the quill

Cinelli 1R 10.5cm x 26.4 silver stem. Used, $65.00/each

Part# cinelli-1r105-u74

From the side

Close-up of the quill

Cinelli 1R 11cm x 26.4 silver stem, pantographed "Bertoni". Used, $70.00/each

This stem must have come from a Bertoni bicycle, which were, like the 1R stems, produced in the 1980s. Bertoni bikes were beautifully made in the Daccordi shop.

Side view

And here it is from the front.

Cinelli 1R 13cm x 26.4 black stem. Used, $80.00/each

Front view

Side view

From above.

The stem's underside.

At the expander wedge

Info stamped on the back of the stem.