Velopedia Bicycle Archive
2023 Polygon Bend R7
Cyclocross/Gravel bicycle from the Velopedia specification archive.
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What Velopedia knows
- Model year
- 2023
- Category
- Gravel & Cyclocross
- Original MSRP
- $1,449.00
- Sizes
- S, M, L, XL
- Colors
- Bronze
- Geometry
- 4 manufacturer sizes · Geometry context
- Record coverage
- 22 preserved details · archived image · original MSRP · preserved geometry
- Archive ID
- 900001823
Frameset
| Frame Construction | ALX Gravel |
|---|---|
| Frame Material | Aluminum |
| Fork | Carbon Rigid |
| Fork Material | Carbon Fiber |
Drivetrain
| Shifters | SRAM Apex 1 11-speed Brifter |
|---|---|
| Rear Derailleur | SRAM Apex 1 11-speed |
| Crankset | SRAM Apex 1 40T, MAX: 42T |
| Bottom Bracket | SRAM GXP |
| Cassette | SRAM PG-1130 11-speed 11-42T |
| Chain | KMC X11-1 for 11-speed |
| Pedals | One Piece PP Flat |
Brakes
| Brakes | SRAM APEX 1 HYDRAULIC DISC; Levers: SRAM APEX 1; Rotors: SRAM PACELINE 160mm CL |
|---|
Cockpit & Contact Points
| Headset | FSA no. 42 W/ Sealed Bearing |
|---|---|
| Handlebar | ALLOY FLARE 16degree, W: 420mm (S, M) / 440mm (L, XL), BB: 31,8mm, R/D: 125mmREAR, B/R: 77mm |
| Stem | ALLOY STEM, EXT: 50mm, BB: 31,8mm, B/R: 7degree |
| Saddle | FLUX2, CR-MO Ø 7mm |
| Seatpost | Tranx-Z JD-YSP38J T: 70mm, DXL: 27,2 X 315mm |
Wheels & Tires
| Hubs | F: Alloy Disc Brake 12x100mm 32H CL / R: Alloy Disc Brake 12x142mm 32H CL for Sprocket |
|---|---|
| Wheels | Alloy Double Wall 32H |
| Rims | Alloy Double Wall FV H: 18 622x25 32H for Tyre 622-44/76 Disc TLR |
| Front Tire | VEE Rocketman 700x44C 622x44 TLR |
| Rear Tire | VEE Rocketman 700x44C 622x44 TLR |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 405 mm | 450 mm | 495 mm | 540 mm |
| Effective top tube | 520 mm | 550 mm | 580 mm | 610 mm |
| Head tube | 140 mm | 165 mm | 200 mm | 235 mm |
| Head-tube angle | 70° | 70° | 70.5° | 70.5° |
| Seat-tube angle | 74.5° | 74° | 73.5° | 73.5° |
| Actual seat-tube angle | 74.5° | 74° | 73.5° | 73.5° |
| Chainstay / rear center | 440 mm | 440 mm | 440 mm | 440 mm |
| Wheelbase | 1030 mm | 1056 mm | 1078 mm | 1110 mm |
| Bottom-bracket drop | 72 mm | 72 mm | 72 mm | 72 mm |
| Bottom-bracket height | 282 mm | 282 mm | 282 mm | 282 mm |
| Reach | 364 mm | 382 mm | 396 mm | 416 mm |
| Stack | 563 mm | 612 mm | 621 mm | 654 mm |
| Standover height | 694 mm | 736 mm | 781 mm | 823 mm |
Geometry source: Polygon first-party metric geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
S geometry
Archive context: Its reach of 364 mm sits toward the shorter end. The chainstay of 440 mm sits somewhat longer than typical. The head angle of 70° sits somewhat slacker than typical.
Compared with 59 distinct cyclocross/gravel geometries in the Small-equivalent size cohort from model years 2022–2025 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze S geometry M geometry
Archive context: Its stack of 612 mm sits toward the taller end. The chainstay of 440 mm sits somewhat longer than typical. The head angle of 70° sits somewhat slacker than typical.
Compared with 63 distinct cyclocross/gravel geometries in the Medium-equivalent size cohort from model years 2022–2025 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze M geometry L geometry
Archive context: The chainstay of 440 mm sits somewhat longer than typical. Its wheelbase of 1078 mm sits somewhat longer than typical. Its stack of 621 mm sits somewhat taller than typical.
Compared with 46 distinct cyclocross/gravel geometries in the Large-equivalent size cohort from model years 2022–2025 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze L geometry XL geometry
Archive context: Its stack of 654 mm sits toward the taller end. Its reach of 416 mm sits toward the longer end. Its wheelbase of 1110 mm sits somewhat longer than typical.
Compared with 51 distinct cyclocross/gravel geometries in the XL-equivalent size cohort from model years 2021–2025 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze XL geometry Parts & serviceability
Find replacement parts
ChainKMC X11-1 for 11-speedExact archived model
CassetteSRAM PG-1130 11-speed 11-42TExact archived model
Bottom bracketSRAM GXPNamed archived component — verify dimensions
More qualified parts (3)
CranksetSRAM Apex 1 40T, MAX: 42TComponent family — verify exact version
Rear derailleurSRAM Apex 1 11-speedComponent family — verify exact version
ShiftersSRAM Apex 1 11-speed BrifterComponent family — verify exact version
Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
- BrakesBoth levers should feel firm and return cleanly. Check for fluid around the levers and calipers, inspect pad thickness and contamination, and look for worn or bent rotors.Inspect the brakes →
- DrivetrainShift through every gear under light load and measure chain wear. Confirm that the shifter, derailleur, chain and cassette belong to the same 11-speed system.Check drivetrain wear →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads. If it is set up tubeless, confirm both tires hold pressure and ask when the sealant was last refreshed.Check wheels and tires →
Bike-specific inspection checklist 20 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2023 Polygon Bend R7 · Cyclocross/Gravel · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: ALX GRAVEL · Fork: CARBON RIGID · Carbon Fiber
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM APEX 1 11-SPEED BRIFTER · Rear derailleur: SRAM APEX 1 11-SPEED · Crankset: SRAM APEX 1 40T, MAX: 42T · Bottom bracket: SRAM GXP · Cassette: SRAM PG-1130 11-SPEED 11-42T · Chain: KMC X11-1 FOR 11-SPEED
Brakes
Inspect the brakes →Archived: Brakes: SRAM APEX 1 HYDRAULIC DISC; Levers: SRAM APEX 1; Rotors: SRAM PACELINE 160mm CL
Wheels and tires
Check wheels and tires →Archived: Wheels: ALLOY DOUBLE WALL 32H · Rims: ALLOY DOUBLE WALL FV H: 18 622X25 32H FOR TYRE 622-44/76 DISC TLR · Hubs: F: ALLOY DISC BRAKE 12x100mm 32H CL / R: ALLOY DISC BRAKE 12x142mm 32H CL FOR SPROCKET · Front tire: VEE ROCKETMAN 700x44C 622x44 TLR · Rear tire: VEE ROCKETMAN 700x44C 622x44 TLR
Controls and contact points
Archived: Headset: FSA NO. 42 W/ SEALED BEARING · Handlebar: ALLOY FLARE 16degree, W: 420mm (S, M) / 440mm (L, XL), BB: 31,8mm, R/D: 125mmREAR, B/R: 77mm · Stem: ALLOY STEM, EXT: 50mm, BB: 31,8mm, B/R: 7degree · Seatpost: TRANX-Z JD-YSP38J T: 70mm, DxL: 27,2 x 315mm · Saddle: FLUX2, CR-MO ø 7mm · Pedals: ONE PIECE PP FLAT
Before and during the test ride
Follow the full used-bike inspection order →Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.