Velopedia Bicycle Archive
2024 Polygon Tambora AE GX
Electric-assist bicycle from the Velopedia specification archive.
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What Velopedia knows
- Model year
- 2024
- Category
- Gravel & Cyclocross
- Original MSRP
- $4,999.00
- Sizes
- S, M, L, XL
- Colors
- Green
- Geometry
- 4 manufacturer sizes · Geometry context
- Record coverage
- 22 preserved details · archived image · original MSRP · preserved geometry
- Archive ID
- 900001821
Frameset
| Frame Construction | ACX Carbon E-Gravel |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | Carbon Rigid |
| Fork Material | Carbon Fiber |
Drivetrain
| Shifters | SRAM Rival eTap AXS 12-speed Brifter |
|---|---|
| Rear Derailleur | SRAM GX Eagle AXS 12-speed |
| Crankset | FSA CK-220-IS Megatooth A 44T |
| Cassette | SRAM XG 1275 GX Eagle 12-speed 10-52T XD Driver |
| Chain | SRAM GX Eagle 12-speed |
Brakes
| Brakes | SRAM Rival Hydraulic; Levers: SRAM Rival AXS; Rotors: SRAM Paceline Centerlock 160mm |
|---|
Cockpit & Contact Points
| Headset | FSA no.55R 1.5"/CR/LS, IS 52/28.6 | IS 52/40 |
|---|---|
| Handlebar | FSA Energy Super Compact, W: 400mm (S-M) 420mm (L-XL), BB: 31.8mm, R/D: 120mm |
| Stem | VISION NS SMR-II ST, EXT: 90mm (S-M) 100mm (L-XL), BB: 31.8mm, R/D: 10degree |
| Saddle | Fizik Terra Argo, Steel Ø7mm |
| Seatpost | CARBON, DxL: 27.2 x 400mm |
Wheels & Tires
| Hubs | F: Novatec D791 12x100mm 24H CL / R: Novatec D792 12x142mm 24H CL for XDR |
|---|---|
| Wheels | Novatec G24 Disc (28mm) W/ Tubeless Tape Installed |
| Rims | Carbon FV H: 28 622x24 24H for Tyre 622-35/68 TLR |
| Front Tire | Schwalbe G-One 700C-40 622x40 Allround Tire TLE Addix |
| Rear Tire | Schwalbe G-One 700C-40 622x40 Allround Tire TLE Addix |
E-bike System
| Motor | Bosch Performance Line Sprint BDU3184 |
|---|---|
| Battery | Bosch Compacttube 400 Fixed Mount Horizontal |
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 | 404 mm | 448 mm | 492 mm | 535 mm |
| Effective top tube | 523 mm | 550 mm | 580 mm | 607 mm |
| Head tube | 143 mm | 165 mm | 200 mm | 223 mm |
| Head-tube angle | 70° | 71.5° | 71.7° | 72° |
| Seat-tube angle | 74.5° | 74° | 73.5° | 73° |
| Actual seat-tube angle | 74.5° | 74° | 73.5° | 73° |
| Chainstay / rear center | 432 mm | 432 mm | 432 mm | 432 mm |
| Wheelbase | 1023 mm | 1030 mm | 1054 mm | 1073 mm |
| Bottom-bracket drop | 77 mm | 77 mm | 77 mm | 77 mm |
| Bottom-bracket height | 283 mm | 283 mm | 283 mm | 283 mm |
| Reach | 367 mm | 381 mm | 395 mm | 409 mm |
| Stack | 566 mm | 592 mm | 626 mm | 649 mm |
| Standover height | 718 mm | 758 mm | 799 mm | 835 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 367 mm sits toward the shorter end. Its wheelbase of 1023 mm sits toward the shorter end. The chainstay of 432 mm sits toward the shorter rear-center end.
Compared with 97 distinct electric-assist geometries in the Small-equivalent size cohort from model years 2022–2026 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 wheelbase of 1030 mm sits toward the shorter end. The chainstay of 432 mm sits toward the shorter rear-center end. Its bottom-bracket drop of 77 mm sits toward the deeper-drop end.
Compared with 112 distinct electric-assist geometries in the Medium-equivalent size cohort from model years 2022–2026 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: Its wheelbase of 1054 mm sits toward the shorter end. Its bottom-bracket drop of 77 mm sits toward the deeper-drop end. The chainstay of 432 mm sits toward the shorter rear-center end.
Compared with 102 distinct electric-assist geometries in the Large-equivalent size cohort from model years 2022–2026 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 bottom-bracket drop of 77 mm sits toward the deeper-drop end. The chainstay of 432 mm sits toward the shorter rear-center end. The head angle of 72° sits toward the steeper end.
Compared with 84 distinct electric-assist geometries in the XL-equivalent size cohort from model years 2022–2026 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
ChainSRAM GX Eagle 12-speedComponent family — verify exact version
CassetteSRAM XG 1275 GX Eagle 12-speed 10-52T XD DriverComponent family — verify exact version
SaddleFizik Terra Argo, Steel Ø7mmNamed archived component — verify exact version
More qualified parts (4)
CranksetFSA CK-220-IS Megatooth A 44TNamed archived component — verify exact version
Rear derailleurSRAM GX Eagle AXS 12-speedComponent family — verify exact version
ShiftersSRAM Rival eTap AXS 12-speed BrifterComponent family — verify exact version
Seatpost27.2 mm seatpostPublished diameter — verify length and setback
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 →- FrameInspect the frame in bright light, especially around the head tube, bottom bracket, chainstays and clamped areas. Look for cracks, ripples, crushed sections or signs of a previous impact.Inspect the frame and fork →
- BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
- E-bike systemConfirm the main battery charges with the correct charger, locks securely into its mount and has no case damage, swelling, corrosion or overheating marks. Power the bike on from cold, test every assist mode and ask for available battery-health and diagnostic records.Check the battery and electronics →
- 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 24 checks based on 6 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: 2024 Polygon Tambora AE GX · Electric-assist · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: ACX CARBON e-GRAVEL · Fork: CARBON RIGID · Carbon Fiber
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM RIVAL ETAP AXS 12-SPEED BRIFTER · Rear derailleur: SRAM GX EAGLE AXS 12-SPEED · Crankset: FSA CK-220-IS MEGATOOTH A 44T · Cassette: SRAM XG 1275 GX EAGLE 12-SPEED 10-52T XD DRIVER · Chain: SRAM GX EAGLE 12-SPEED
Brakes
Inspect the brakes →Archived: Brakes: SRAM RIVAL HYDRAULIC; Levers: SRAM RIVAL AXS; Rotors: SRAM PACELINE CENTERLOCK 160MM
Wheels and tires
Check wheels and tires →Archived: Wheels: NOVATEC G24 DISC (28mm) W/ TUBELESS TAPE INSTALLED · Rims: CARBON FV H: 28 622x24 24H FOR TYRE 622-35/68 TLR · Hubs: F: NOVATEC D791 12x100mm 24H CL / R: NOVATEC D792 12x142mm 24H CL FOR XDR · Front tire: SCHWALBE G-ONE 700C-40 622X40 ALLROUND TIRE TLE ADDIX · Rear tire: SCHWALBE G-ONE 700C-40 622X40 ALLROUND TIRE TLE ADDIX
Controls and contact points
Archived: Headset: FSA NO.55R 1.5"/CR/LS, IS 52/28.6 | IS 52/40 · Handlebar: FSA ENERGY SUPER COMPACT, W: 400mm (S-M) 420mm (L-XL), BB: 31.8mm, R/D: 120mm · Stem: VISION NS SMR-II ST, EXT: 90mm (S-M) 100mm (L-XL), BB: 31.8mm, R/D: 10degree · Seatpost: CARBON, DxL: 27.2 x 400mm · Saddle: FIZIK TERRA ARGO, STEEL ø7mm
E-bike system
Check the battery and electronics →Archived: Motor: BOSCH PERFORMANCE LINE SPRINT BDU3184 · Battery: BOSCH COMPACTTUBE 400 FIXED MOUNT HORIZONTAL
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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Recently checked marketplace data
Market Snapshot
Velopedia did not find a close used eBay listing in the latest snapshot. New and used listings remain separate.
Evidence standard
Fixed-price and Best Offer item prices only
Shipping and tax excluded
Active asks, not completed sales
No close current matches found. Velopedia did not find an eBay listing confident enough to include in the latest snapshot.
Listings shown have not passed their eBay-supplied end time. Velopedia rechecks matched bicycles on a protected weekly cycle; availability can still change between checks. Price calculations use active fixed-price and Best Offer item prices before shipping and tax. Auction bids, auction-only prices, classified ads, lower-confidence Review candidates and ended listings are excluded. These observations are not completed-sale prices, a certified appraisal or a guarantee of value.
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.