
Velopedia Bicycle Archive
2017 Giant Fathom 29 1
Original manufacturer specifications including geometry for 4 published sizes.
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What Velopedia knows
- Model year
- 2017
- Category
- Mountain
- Sizes
- S, M, L, XL
- Colors
- Blue/Yellow
- Geometry
- 4 manufacturer sizes · Geometry context
- Record coverage
- 22 preserved details · archived image · preserved geometry
- Archive ID
- 900002401
Frameset
| Frame Construction | ALUXX SL-grade aluminum |
|---|---|
| Frame Material | Aluminum |
| Fork | SR Suntour Axon LO-RC, 15mm thru-axle, OverDrive, 100mm travel |
| Rear Shock | N/A |
Drivetrain
| Shifters | SRAM NX |
|---|---|
| Front Derailleur | N/A |
| Rear Derailleur | SRAM NX |
| Crankset | SRAM NX, 28T |
| Bottom Bracket | SRAM GXP, Press fit |
| Cassette | SRAM NX 11x42, 11-speed |
| Chain | KMC X11 |
| Pedals | Platform, caged |
Brakes
| Brakes | Shimano M395, hydraulic disc, [F] 180mm [R] 160mm |
|---|
Cockpit & Contact Points
| Handlebar | Giant Connect Trail, 31.8mm |
|---|---|
| Stem | Giant Connect |
| Saddle | Giant Connect Upright |
| Seatpost | Giant Connect, 30.9mm |
Wheels & Tires
| Hubs | Giant Sport Tracker Disc, 28h, [F] 15mm thru-axle, [R] QR |
|---|---|
| Rims | Giant XC-3 |
| Spokes | Stainless Steel, 14g |
| Front Tire | Maxxis Ikon, 29x2.20, Wire |
| Rear Tire | Maxxis Ikon, 29x2.20, Wire |
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 | 390 mm | 445 mm | 480 mm | 530 mm |
| Top tube | 585 mm | 605 mm | 625 mm | 645 mm |
| Head tube | 95 mm | 100 mm | 115 mm | 130 mm |
| Head-tube angle | 69° | 69° | 69° | 69° |
| Seat-tube angle | 73.5° | 73.5° | 73.5° | 73.5° |
| Chainstay / rear center | 442 mm | 442 mm | 442 mm | 442 mm |
| Wheelbase | 1100 mm | 1121 mm | 1142 mm | 1163 mm |
| Bottom-bracket drop | 55 mm | 55 mm | 55 mm | 55 mm |
| Reach | 406 mm | 425 mm | 441 mm | 457 mm |
| Stack | 603 mm | 608 mm | 622 mm | 636 mm |
| Standover height | 730 mm | 756 mm | 765 mm | 790 mm |
| Fork offset / rake | 42 mm | 42 mm | 42 mm | 42 mm |
| Trail | 98 mm | 98 mm | 98 mm | 98 mm |
| Crank length | 170 mm | 175 mm | 175 mm | 175 mm |
| Stem length | 80 mm | 90 mm | 100 mm | 110 mm |
| Handlebar width | 730 mm | 730 mm | 730 mm | 730 mm |
| Wheel size | 29" | 29" | 29" | 29" |
Geometry source: Giant first-party size 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: The chainstay of 442 mm sits toward the longer rear-center end. Its stack of 603 mm sits toward the taller end. Its bottom-bracket drop of 55 mm sits toward the deeper-drop end.
Compared with 37 distinct mountain geometries in the Small-equivalent size cohort from model years 2015–2019 in the Velopedia archive.M geometry
Archive context: The chainstay of 442 mm sits toward the longer rear-center end. Its bottom-bracket drop of 55 mm sits somewhat deeper than typical. Its stack of 608 mm sits somewhat taller than typical.
Compared with 39 distinct mountain geometries in the Medium-equivalent size cohort from model years 2015–2019 in the Velopedia archive.L geometry
Archive context: The chainstay of 442 mm sits toward the longer rear-center end. Its bottom-bracket drop of 55 mm sits toward the deeper-drop end. Its stack of 622 mm sits toward the taller end.
Compared with 36 distinct mountain geometries in the Large-equivalent size cohort from model years 2015–2019 in the Velopedia archive.XL geometry
Archive context: The chainstay of 442 mm sits toward the longer rear-center end. Its bottom-bracket drop of 55 mm sits toward the deeper-drop end. Its stack of 636 mm sits somewhat taller than typical.
Compared with 30 distinct mountain geometries in the XL-equivalent size cohort from model years 2015–2019 in the Velopedia archive.Parts & serviceability
Find replacement parts
More qualified parts (5)
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 →
- SuspensionAsk when the fork was last serviced. Check the stanchions for damage, look for oil at the seals and make sure the fork moves smoothly without bushing play.Evaluate the suspension →
- 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.Check wheels and tires →
Bike-specific inspection checklist 20 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: 2017 Giant Fathom 29 1 · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: ALUXX SL-grade aluminum · Fork: SR Suntour Axon LO-RC, 15mm thru-axle, OverDrive, 100mm travel
Suspension
Evaluate the suspension →Archived: Fork: SR Suntour Axon LO-RC, 15mm thru-axle, OverDrive, 100mm travel
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM NX · Rear derailleur: SRAM NX · Crankset: SRAM NX, 28T · Bottom bracket: SRAM GXP, Press fit · Cassette: SRAM NX 11x42, 11-speed · Chain: KMC X11
Brakes
Inspect the brakes →Archived: Brakes: Shimano M395, hydraulic disc, [F] 180mm [R] 160mm
Wheels and tires
Check wheels and tires →Archived: Rims: Giant XC-3 · Hubs: Giant Sport Tracker Disc, 28h, [F] 15mm thru-axle, [R] QR · Front tire: Maxxis Ikon, 29x2.20, Wire · Rear tire: Maxxis Ikon, 29x2.20, Wire
Controls and contact points
Archived: Handlebar: Giant Connect Trail, 31.8mm · Stem: Giant Connect · Seatpost: Giant Connect, 30.9mm · Saddle: Giant Connect Upright · Pedals: Platform, caged
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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Current market
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.




