Trifox X18

SEPARATE bar and stem (not integrated), but the frameset SHIPS WITH a cockpit: the package list is 1 x Carbon Road Bike Frame X18, 1 x Carbon Fork FX18, 1 x Carbon Seatpost SX18, 1 x Carbon Drop Handlebar DHX18, 1 x Stem STX18, 1 x Headset, 1 x Rear Derailleur Hanger HX18. Stem STX18: lengths 90 / 100 / 110 / 120 mm (from the weight list: 217 / 234 / 246 / 254 g); stem angle, clamp height and rise NOT published. Handlebar DHX18: widths 400 / 420 / 440 mm (weights 278 / 283 / 288 g); the maker's handlebar drawing (https://img.trifoxbike.com/media/upload/u/vk/uvkmkf7o16ffyrv1640855863.jpg, alt "Geometry of Trifox Drop Handlebar for Carbon Road Bike Frame X18") shows width 400/420/440 +/-1.00, clamp diameter 31.80 (+0.15/-0), drop-end diameter 24.20, a reach dimension of 146.90 (drawn from the front of the hook to the drop-end centreline, so it includes half a tube and is not the usual centre-to-centre reach), drop 131.91 centre-to-centre with 150.46 overall, top section 17.00 x 8.00 and drop section 12.00 x 9.50 - read from the drawing, all in mm. The product page has only Painting and Size selectors (no bar-width or stem-length picker); the default SKU X1846TI40090 (variant "Silver Gradient, 46cm") reads as 46 cm / 400 mm bar / 90 mm stem, so which stem length and bar width ship with each frame size is NOT stated - stock_stem_length and stock_bar_width left null. Headset (included): upper 52 x 8 mm x 45 deg, lower 52 x 7 mm x 45 deg; spacers, top cap / headset cover height and maximum spacer stack NOT published on the page (a "Service manual - X18" is linked as a Google Drive file, https://drive.google.com/file/d/19GxcnZDruY0dsFgNi1eTPbzr3q3p6MjF/view, not read). Seatpost SX18: carbon, 182 g, "Seatpost insertion length 7-12cm"; diameter, length and offset NOT published on the page. Fork FX18: 384 g, 100 x 12 mm thru axle, full length (axle to crown, row K) 366 mm all sizes; fork offset NOT published. Full internal cable routing through the head tube; BSA BB68 (34 mm x 68 mm); 142 x 12 rear thru axle; flat mount disc; max tyre 700 x 28C. Frame weights (painted pre-production): 44 = 838 g, 46 = 850, 49 = 862, 52 = 900, 54 = 910, 56 = 960, 58 = 982.

The page carries TWO geometry tables, both HTML. TABLE 1 ("Geometry" tab, headed "Lightweight Carbon Road Bike Frameset X18 Geometry", diagram https://img.trifoxbike.com/media/upload/6/2q/62q6qzklll6jyzo1689156557.jpg): rows A Head Tube Angle (deg), B Seat Tube Angle (deg), C Chainstay Length, D BB Drop, E Wheel Base, F Seat Tube Length, G Stack, H Top Tube Length Horizontal, I Reach, J Head Tube Length, K Fork Length Full (all mm). TABLE 2 ("Product Geometry" heading inside the long description block, data-section "Trifox Carbon Road Bike Frame X18 Geometry", line drawing https://img.trifoxbike.com/media/upload/2/xw/2xwd9os3dnbzpe01640855848.jpg whose alt text says "Parameter" but which is the A-M lettered geometry drawing): rows A Stack, B Reach, C Head Tube Length, D Head Tube Angle, E BB Drop, F Fork Length Full, G Fork Rake/Offset, H Front Center, I Chainstay Length, J Wheelbase, K Top Tube Length Horizontal, L Seat Tube Length, M Seat Tube Angle (mm / deg). The two tables agree on every value except the 54cm reach: table 1 says 397, table 2 says 387. The maker's own stack, seat tube angle and horizontal top tube for 54cm imply 388 (541 - 534 / tan 74 deg) and every other size reconciles to within 1 mm by the same arithmetic (369/373/378/383/398/405), so 387 (table 2) is the value stored and 397 (table 1) is treated as a typo on the maker's page. Table 2 also publishes fork offset 47 mm (all sizes) and front centre per size, which table 1 does not; both are stored. Front centre cross-checks: horizontal projections of front centre and chainstay (using the published BB drop) sum to the published wheelbase within 1 mm for every size. The Geometry tab note says "All measurements provided in cm unless otherwise noted" but every row is explicitly labelled mm or deg. Sizes are named by nominal seat tube length in cm (44, 46, 49, 52, 54, 56, 58) although the published seat tube is 435/440/447/458/475/496/517 mm. STACK DATUM: on both diagrams stack (G on table 1, A on table 2) is drawn vertically from the bottom bracket centre to the horizontal line through the top of the head tube (the same line the horizontal top tube and reach are drawn to), i.e. the standard BB-centre-to-head-tube-top convention; reach is drawn horizontally from the BB vertical to the head tube top. FORK OFFSET DATUM: table 2 diagram letter G is drawn perpendicular from the steering axis to the front axle (standard rake). FRONT CENTRE DATUM: table 2 diagram letter H is drawn from the BB centre to the front axle. top_tube_effective = "Top Tube Length Horizontal". Not published, so null: standover, trail. Fork length full 366 mm (axle to crown) is not in the schema. Model year: the page is undated; the table 2 drawing was uploaded 2021-12-30 and the table 1 diagram 2023-07-12 (timestamps in the file names), the handlebar drawing 2021-12-30, and the oldest review is dated 2022-01-11, so the frame has been on sale since at least 2021/2022 with both tables live on 2026-08-29. SIZING GUIDES (the page carries two that disagree): Geometry tab, rider height / inseam: 44cm 152-160 cm / 68.5-73.5 cm; 46cm 160-165 / 73.5-76; 49cm 165-170 / 76-78.5; 52cm 170-175 / 78.5-83.5; 54cm 175-183 / 83.5-86.5; 56cm 183-188 / 86.5-91.5; 58cm 188+ / 91.5+. Description block "Size Recommend": 44cm 150-156 cm; 46cm 156-163; 49cm 163-172; 52cm 172-178; 54cm 178-184; 56cm 184-188; 58cm 188-192. Maker's category wording: "Lightweight" / "Ultra-lightweight" T800 carbon disc road frameset; recorded here as climbing road per the collection brief.