Evidence reviewed through . Price records retain their own observation dates and conditions.View sourcesMethodology and dataset
GIRDER 格拉德 Corsa 2025 105 mechanical
August 2025 post; build and size are not stated.
Used listing; dropout standard on this frame is not stated.
Used listing; not the official R7120 package.
2026 used listing with Tiagra 4720 and a 105 crankset; generation and original package are unconfirmed.
Swipe or scroll the photos, or use the arrow keys, Home and End on the thumbnails.
- Category
- Aero road
- Bottom bracket
- T47 threaded, P1.0 thread, 84.5 mm shell width supplied with two 1 mm shims (the frame line separately says 'BSA'; the BB row is the more specific value)
- Sizes
- S (440 mm), M (470 mm), L (500 mm)
- Complete weight
- 8.8 kg
Overview
GIRDER 格拉德 Corsa 2025 105 mechanical. GIRDER's lowest-priced current carbon road complete: 105 R7120 mechanical, T47 and 50 mm carbon wheels at an official ¥9,999, with its own three-size geometry.
The recorded complete-bike price is ¥9,999; its date and basis remain visible below.
Buying context
Before buying, verify Manufacturer-published maximum tire clearance; Complete-weight size, pedal and measurement basis; Frame or frameset weight; Independent exact-model stiffness or deflection measurement; Current mainland China marketplace listing or checkout amount, warranty issuer, warranty term and invoice handling; Frame production factory; Rights-cleared exact product image.
Specifications and evidence
- Product type
- Complete bike
- Category
- Aero road
- Evidence maturity
- Research profile
- Price basis
- Official price · 2026-10-24
- Drivetrain
- Shimano 105 R7120 mechanical 2×12; FC-R7100 52-36T 170 mm crank, CS-R7100 11-34T cassette; chain not listed
- Brakes
- Shimano 105 R7120 hydraulic disc
- Frame
- 2025 CORSA T800 + T1000 carbon aero frame and fork, 12 mm thru-axles, UDH dropout, fully hidden routing (the page repeats the Shimano battery-storage line on this mechanical build)
- Frame material
- T800 + T1000 carbon frame (reinforced bottom-bracket area) and fork; fiber supplier and lay-up are not published
- Frame construction
- EPS-molded aero frame and fork with fully hidden routing
- Stiffness evidence
- No measured or comparative stiffness evidence found; the reinforced bottom-bracket wording is manufacturer construction copy, not a test result
- Bottom bracket
- T47 threaded, P1.0 thread, 84.5 mm shell width supplied with two 1 mm shims (the frame line separately says 'BSA'; the BB row is the more specific value)
- Derailleur hanger
- UDH
- Wheels
- Adler Augen matte unpainted Obsidian carbon wheels, 50 mm, four-bearing 90-point six-pawl hubs, flattened steel spokes
- Tires
- Maxxis 700C×28C folding tires fitted; maximum clearance is not published
- Cockpit
- Adler Augen integrated carbon handlebar
- Sizes
- S (440 mm), M (470 mm), L (500 mm)
- Geometry
- Official chart, stack/reach mm: 440 535/382, 470 545/384, 500 569/397; seat angle 75.5–74°, head angle 72–73°, chainstay 410 mm, BB drop 72 mm, wheelbase 984–999 mm, head tube 115–147 mm
- Complete weight
- 8.8 kg
- Complete weight basis
- Manufacturer-listed weight for this complete bike; size, pedals and weighing method are not stated
Official NEW 2025 CORSA page; GIRDER sells by direct inquiry and no mainland China marketplace listing was verified. See docs/research-girder-range-inventory-2026-10-24.md for related generations kept separate. Two XHS posts are CORSA family context only: a 2025 bike-store post naming 7120 carbon without generation or wheels, and a 2026 used listing with Tiagra 4720 and a 105 crank whose original or modified package is unknown; neither changes this build's specification or price.
Price history
| Observed | Price | Type | Conditions |
|---|---|---|---|
| ¥9,999 | Official reference | Manufacturer-listed price on the exact NEW 2025 CORSA page; no mainland China marketplace listing or checkout amount was observed |
About GIRDER
GIRDER (格拉德) is sold in China by 苏州格拉德自行车科技有限公司, a Kunshan company recorded in a public directory as established on 2015-01-27. The company's own site says it licensed a British brand, tracing it to the 1977 founding of the Edinburgh Bicycle Co-operative and to partners in Manchester, with China authorization in 2014. We found no independent evidence for that origin or licence, so it remains a company claim. A 2016 Biketo article calling GIRDER a domestic brand was published under GIRDER's own byline, not as independent reporting.
Visit the official GIRDER websiteSources
These sources support this model page; individual claims retain the confidence of their cited source.
Exact NEW 2025 CORSA page lists ¥9,999; T800+T1000 BB-reinforced aero frame and fork, EPS, hidden routing, frame line 'BSA' but BB row T47 P1.0 84.5 mm + 2×1 mm shims, 12 mm thru-axles, UDH; Adler Augen integrated bar; 105 R7120 mechanical 2×12, FC-R7100 52-36T 170 mm, 'CS-7100 11-34T', R7120 hydraulic discs; Adler Augen Obsidian 50 mm carbon wheels with four-bearing 90-point hubs; Maxxis 28C; weight 8.8 kg (basis not stated). Geometry chart (mm/deg; 440/470/500): seat tube 440/470/500; top tube 520/525/560; chainstay 410; seat angle 75.5/75.5/74; head angle 72/72/73; wheelbase 984/989/999; BB drop 72; head tube 115/125/147; stack 535/545/569; reach 382/384/397. Not the older ROAD-section CORSA (ROAD/32.html, press-fit T700+T800, alloy wheels, ¥7,999). Read over HTTP, matching the site’s published links.
Official contact page lists a sales email and messaging contact and a business address in Lujia Town, Kunshan. It is a direct sales-inquiry route; no online checkout, marketplace store link, warranty term or shipping policy is published.
Brand-authored history. States that GIRDER Bicycle Technology Co., Ltd. was founded in 2015, introduced the British bicycle brand GIRDER and handles design, R&D and sales; positions products in the CNY 5,000–20,000 range. Claims the brand dates back to the 1977 founding of the Edinburgh Bicycle Co-operative, that partners in Manchester created the GIRDER brand, and that authorization to enter China succeeded in 2014. These origin and licensing claims are company-reported and were not independently corroborated. The HTTPS certificate had expired on access; the page was read over HTTP.
GIRDER CORSA 7120 carbon road bike store post (2025-04)
A bike-store post titled as a value carbon GIRDER CORSA road bike states only '7120' equipment and full-carbon construction. Both official CORSA builds use Shimano 105 R7120 mechanical 2×12 on a carbon frame, so this post cannot distinguish the NEW 2025 T47 generation with 50 mm carbon wheels from the earlier press-fit generation with alloy wheels. No price, size, wheel package, weight, clearance or shell standard is stated. Two captured comments only ask the price and about the frame; no answer was captured. Value-claim wording is not accepted.
GIRDER CORSA used listing with Tiagra 4720 and 105 crank (2026-04)
A condition-qualified listing offers a GIRDER CORSA carbon drop-bar road bike with a Shimano Tiagra 4720 group, a 105 crankset, hydraulic disc brakes and carbon wheels, with shipping offered and the price left negotiable. It does not say whether this is an original GIRDER package or a modified bike, and it names no frame generation, size, weight or clearance. It is not a specification for either official R7120 CORSA build. Subjective ride, shifting, braking and lightness praise is not accepted.