DEDA SUPERLEGGERA RS BAR & SUPERLEGGERO RS STEM

BAR £249.99, STEM £156.99 › Light front end

SUPERLEGGERO IS A TERM COINED by an Italian automotive coachbuilder long before the advent of carbon fibre, but super light is still as relative.

The Superleggera RS carbon bar is essentially the Superleggera bar with a limited edition finish. It uses high modulus HR40 carbon fibre and a resin that Deda says allows a high level of compaction, saving weight. It’s formed in Deda’s popular Rapid Hand Movement (RHM) bend, which is a compact shape with a smooth ergonomic curve that makes swift positional changes simple.

Our bar measures 46cm to the outside, or 44cm centre to centre, and weighs 202g, putting it among the lightest available. Each side has a constant 31.7mm diameter top with no central bulge, providing a wide purchase. Beneath, there’s a large tunnel for internal routing. At two thirds distance from the stem, the bar gently curves forward, and as it turns 45 degrees towards the drop, it slims to a conventional 24mm diameter.

The drops are square – at 90 degrees – to the tops, and there’s no flare. This makes the drops with their 75mm reach and 130mm drop more accessible, as the rounded upper bend allows extra wrist clearance when leaning the bike from side to side.

There’s no shortage of rigidity when pulling on the bar during a steep climb or sprint, and we couldn’t detect any twist from the stem. This translates to perfect steering accuracy and response, with the confidence that your efforts are never wasted. It’s built more for speed than comfort, but still nullifies road buzz, and takes the edge off bigger bumps, with a stiff, purposeful feel.

Deda claims the forged 7050 aluminium Superleggero RS stem is the lightest available, and our 110mm example is an impressive 103g, with twin slotted faceplate clamps and minimal stem clamp at each end of the slim tubular body, plus titanium bolts. The surface is coated with Duracer, a ceramic hardening treatment to guard against corrosion and wear.

Ritchey’s WCS C260 stem has a claimed weight of 103g (unknown length), with five steel bolts for under £100, so don’t worry about ‘lightest’ claims. But if you want a special cockpit, factors such as performance, looks and fit will take precedence.

WE SAY The RS bar and stem are at the pinnacle of cockpit marginal gains