These sources support this model page; individual claims retain the confidence of their cited source.
De Rosa 838 official product page
De Rosa · Manufacturer product pageIdentity: High · Specification: Medium · Price: Low · accessed 2026-08-17
Official exact-model or exact-platform page used for image identity. Mainland China price, stock, configuration and warranty evidence remain separately unresolved.
De Rosa New 838 current specifications
De Rosa · Manufacturer product pageIdentity: High · Specification: High · Price: Low · accessed 2026-08-30
Current exact-family manufacturer page identifies a roughly 900 g carbon frame, an elliptical bottom-bracket area described as providing greater stiffness, Shimano 105 Di2 2x12, and a 32 mm tire maximum. The retained mainland China card does not expose its selected complete build.
De Rosa 838 current white paper
De Rosa · Manufacturer technical documentIdentity: High · Specification: High · Price: Low · accessed 2026-08-30
Current manufacturer white paper for the exact 838 platform states maximum tire clearance of 30 mm, conflicting with the live product page claim of 32 mm.
De Rosa New 838 regional build options
De Rosa Japan · Manufacturer regional pageIdentity: High · Specification: High · Price: Low · accessed 2026-08-30
Current official regional material documents a Campagnolo Chorus New 838 build, confirming that the family is offered in more than one drivetrain configuration.
De Rosa New 838 current mainland China listing option
JD.com · Marketplace indexIdentity: High · Specification: Medium · Price: Low · accessed 2026-08-30
Current mainland China index identifies a New 838 Shimano 105 HDB option but does not expose a controlled complete weight or enough configuration detail to select it for the retained card.
De Rosa New 838 launch construction and rigidity notes
De Rosa · Manufacturer technical articleIdentity: High · Specification: High · Price: Low · accessed 2026-08-30
Exact-model manufacturer launch article identifies a high-module carbon frame and fork, oversized down and top tubes, an elliptical bottom-bracket area and dropped stays. Its lower-weight and greater-rigidity statements are qualitative manufacturer claims without a numeric protocol or independent measurement.
De Rosa New 838 Japan build options
De Rosa Japan · Manufacturer regional product pageIdentity: High · Specification: High · Price: Low · accessed 2026-09-23
Current official Japan-market material lists complete New 838 builds with Shimano 105 Di2 and Campagnolo Chorus. It does not identify which build matches the retained mainland China CNY 9,999 observation.
De Rosa 838 current model page
De Rosa · Manufacturer product pageIdentity: High · Specification: High · Price: Low · accessed 2026-09-23
Current exact-model manufacturer page describes a carbon frame and approximately 900 g frame weight. Its current 32 mm maximum tire claim conflicts with the manufacturer white paper retained in the candidate, which says 30 mm; neither claim is overridden here.
De Rosa New 838 launch and frame design
De Rosa · Manufacturer newsroomIdentity: High · Specification: Medium · Price: Low · accessed 2026-09-23
Manufacturer launch material makes qualitative rigidity claims tied to frame geometry and tube/seatstay design. It supplies no numeric stiffness protocol or independent measurement.
White paper 838 ita tire-clearance recheck
De Rosa · Manufacturer technical document recheckIdentity: High · Specification: Medium · accessed 2026-09-24
Opened 2026-09-24. The exact 838 white paper identifies the De Rosa 838 and presents a 2026 five-color update without a numbered generation. Page 9 says ‘Tyre clearance 30’; the extracted text gives no unit, tire-size qualifier or measurement condition. This does not reconcile the earlier exact product-page claim of 32 mm.
De Rosa 838 English white paper clearance recheck
De Rosa · Manufacturer technical document recheckIdentity: High · Specification: Medium · accessed 2026-09-25
Opened 2026-09-25. The exact 838 white paper says ‘Tyre clearance 30’ without a unit, tire-size qualifier, or measurement condition. The current exact-model product page separately states up to 32 mm; the maximum remains unresolved.
