Corum

Name: De Rosa Corum
Brand: De Rosa

road

Origin

The Corum is De Rosa's steel artisan road bike, built as an explicit homage to Italian racing tradition. Using 18MCDV6 chromoly — a high-grade chromium-molybdenum-vanadium alloy — the Corum brings the lively, vibration-absorbing ride feel of steel in a design refined over decades of Italian road racing culture. The 30-size range and made-to-measure option mean no two Corums need be identical.

Specifications

Frame: 18MCDV6 chromoly steel TIG-welded; frame weight ~1,700 g; available in 30 standard sizes plus custom/made-to-measure geometry and slope; ITA (Italian-threaded) bottom bracket
Weight: kg
Drivetrain: Frameset: compatible with standard road groupsets (Shimano, Campagnolo); typical builds feature Shimano Ultegra or Campagnolo Chorus; crankset customisable on made-to-measure order
Brakes: Rim-brake standard (direct-mount or standard caliper); disc variant (Corum Steel Gravel Disc) also available with flat-mount disc
Wheels: 700c; standard quick-release on rim-brake version

The verdict

+Strengths

18MCDV6 chromoly delivers the classic steel compliance and vibration damping prized by long-distance riders
Made-to-measure and 30-size range offer genuine fit flexibility unavailable from mass-produced brands
Repairable and long-lived — steel frames can be straightened and rewelded, unlike carbon monocoques

−Weaknesses

At ~1,700 g frame weight it is substantially heavier than De Rosa's carbon offerings — physics of material density
Limited to ~28 mm tyres on rim-brake version — narrow by modern gravel/all-road standards
Premium artisan pricing for a material that is cheap per kilogram — the value is the craft, not the steel