Serk A30M The Captain Integrated

INTEGRATED one-piece bar/stem is the point of the A30[M] ("[M]inimal - one piece cockpit"; owners manual: "Fully integrated one-piece cockpit", "Integrated Cockpit All-Road Bike"). The FRAMESET (RMB 15,300 / USD 2,399) ships WITHOUT a bar: it includes Serk Headset Integrated, seatpost clamp, thru-axles, expander and aero computer mount; the cockpit is a paid add-on chosen from: Deda Super Box / Deda RS2 (external cable stem + bar, +RMB 1,000), THE ONE PRO Carbon Integrated (+RMB 1,500), EXS Aerover Carbon Integrated (+RMB 2,500); one line on the same page says "TheONE Pro Carbon / EXS Integrated carbon (add extra 1500 RMB)" so the EXS surcharge is inconsistent on the page. Complete builds: SRAM Force AXS E1 and Shimano Ultegra Di2 list "EXS Integrated carbon" (the Ultegra build's parts list says "THEONE Pro Integrated" - page is inconsistent); the Shimano 105 Di2 build lists DEDA Zero2 DCR handlebar + DEDA Superbox V2 stem ("Handlebar upgrade available ask us"). Serk publishes NO per-frame-size stem length or bar width, so stock_stem_length and stock_bar_width are null. EXS AEROVER (Serk's co-developed bar; the Serk page links https://exs-cycling.com/products/aerover-integrated-handlebar and says the bar was designed together with EXS): Serk text says "over 30 different sizes - from 80/360mm all the way to 140/420mm"; the EXS product page lists widths 360 / 380 / 400 / 420 mm (hoods, centre to centre) x stem lengths 90 / 100 / 110 / 120 / 130 / 140 mm (no 80 mm on the EXS page; 420 x 90 not offered), reach 70 mm, drop 125 mm, stem angle -10 deg, steerer height (stem clamp height) 35 mm, 31.8 mm diameter, weight 290 g (360-90) / 310 g (400-110), fits 28.6 OD1 / 31.8 OD2 steerers. Serk's stocked-size table (image https://www.serk.cc/wp-content/uploads/2022/10/size_table_fn.png): hoods width 360/380/400/420 = drops width 380/400/420/440 (20 mm wider at the drops); "available" (stocked) combinations are 380x90, 380x100, 380x110, 400x100, 400x110, 420x100, 420x110, 420x120; every other combination is "on request" and 420x90 is "n/a". Headset: EC44 upper / EC44 lower, described by Serk as "a handlebar-specific headset designed to be used in conjunction with our integrated one-piece stem/handlebar"; other integrated systems (e.g. FSA ACR) need their own compatible headset; head tube is a straight 44 mm, fork steerer tapered 28.6 to 39.8 mm; Serk and EXS designed a new top cap + compression ring for the integrated cabling. "Additional top headset stack" = 28.5 mm on every size (the upper headset assembly that sits on top of the frame's head tube; see notes). Spacers: Serk publishes no spacer heights or maximum stack; EXS sells an "Aerover Integrated Handlebar Spacer Kit" (heights not published on the page fetched). Seatpost: round 27.2 mm ("Seatpost diameter 27.2mm"); builds use "Serk Carbon Seatpost 27.2mm"; offset / setback NOT published; Panda Podium sells the frameset with seatpost "Not Included", "Carbon Seatpost (+USD 100)" or "Titanium Seatpost (+USD 200)", again with no offset stated. Aero computer mount included with the frameset.

The separate starred row "Additional top headset stack" (28.5 mm, all sizes) is the height of the EC44 external upper headset assembly above the head tube; Serk publishes it so you can add it to Stack to get the stack at the underside of the stem. It is NOT added into the stack column here. The owners manual A40 chart shows the same convention (28.5 mm internal routing / 10.1 mm external routing), confirming it is a headset-assembly height, not part of the frame stack. COLUMN MAPPING: A Seat Tube Length -> seat_tube_length; B Top Tube Length (drawn horizontal from head tube top to the seatpost axis, i.e. effective) -> top_tube_effective; C Head Tube Length; D Seat Tube Angle; E Head Tube Angle; F BB Drop; G Chainstay length; H Wheelbase; I Fork Offset (XS 50, all others 43); J "Trail (28C)" -> trail, published by Serk for a 28 mm tyre. Standover and front centre are not published. Wheelbase is reproduced verbatim: XS 986 is LONGER than S 981 on the brand page, in the owners manual and on the Panda Podium reprint (consistent with the XS 70.5 deg head angle + 50 mm offset). SIZE NAMES: XS / S / M / L / XL / XXL only, no cm names; seat tube lengths 470-580. Serk publishes no rider height guide on this page. MODEL YEAR: Serk does not badge model years; the diagram file is named geo_2023_550.jpg (uploaded 2022/10), the A30M page was published 2022-10-08 and last modified 2025-10-20, and the owners manual (https://www.serk.cc/ownersmanual/, modified 2026-08-25) carries the IDENTICAL A30M table under "A30[M] | The Captain Integrated - Integrated Cockpit All-Road Bike", so the numbers are current as of 2026-08-28 but undated. NAMING: the range page (https://www.serk.cc/titanium/) calls the base A30 "THE CAPTAIN" ("Road Disc Silver Bullet"); the A30M's full name "The Captain Integrated" comes from the owners manual and matches the Panda Podium listing. CATEGORY: Serk says "Fast road geometry ... Geometry is optimized for 28mm tyres but the frame and fork can accomodate tyres up to 35mm putting the bike into the 'all-road' category" -> all-road. OTHER FRAME FACTS (brand page + owners manual): titanium 3Al/2.5V, Serk Carbon Internal Cable All-Road fork, 700c, 35 mm measured max tyre, T47 BB (68 mm shell), max chainring 53/39, flat mount, 12x100 / 12x142 thru-axles M12xP1.5, 140 mm rotor standard (160 max), bridgeless seatstays, semi-internal cable routing (modular ports 22 / 28 mm), Di2 compatible, frame rated to 115 kg rider + bike. Frame weights appear ONLY on the Panda Podium listing (XS 1630 / S 1690 / M 1730 / L 1800 / XL 1860 / XXL 1930 g +/-5 %, fork 420 g) - not on serk.cc. Prices on serk.cc: frameset RMB 15,300 / USD 2,399; 105 Di2 RMB 28,300 / USD 4,249; Ultegra Di2 RMB 40,300 / USD 5,960; Force AXS E1 RMB 47,000 / USD 6,920 ("Specs are subject to availability"). Source: html_table (brand site A30M page, HTML geometry table under the GEOMETRY heading + geometry diagram image https://www.serk.cc/wp-content/uploads/2022/10/geo_2023_550.jpg)