
Velopedia Bicycle Archive
2025 Giant Roam 2
Original manufacturer specifications including geometry for 4 published sizes.
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What Velopedia knows
- Model year
- 2025
- Category
- Hybrid
- Original MSRP
- $850.00
- Sizes
- S, M, L, XL
- Colors
- Asphalt Green
- Geometry
- 4 manufacturer sizes · Geometry context
- Record coverage
- 22 preserved details · 7 archived images · original MSRP · preserved geometry
- Archive ID
- 900001281
Model history 4 other years
Frameset
| Frame Construction | ALUXX-grade aluminum, disc |
|---|---|
| Frame Material | Aluminum |
| Fork | SR Suntour NEX HLO 700C, 63mm |
| Rear Shock | N/A |
Drivetrain
| Shifters | microSHIFT Advent, 1x9 |
|---|---|
| Front Derailleur | N/A |
| Rear Derailleur | micoSHIFT Advent, 1x9 |
| Crankset | Forged alloy, 40t S:170mm, M:170mm, L:175mm, XL:175mm |
| Bottom Bracket | sealed cartridge |
| Cassette | micorSHIFT Advent, 11x46 |
| Chain | KMC X9 |
| Pedals | platform |
Brakes
| Brakes | Tektro TKD-143 hydraulic, [F]160mm, [R]160mm rotors |
|---|
Cockpit & Contact Points
| Handlebar | Giant Sport XC, 31.8mm S:64cm, M:68cm, L:68cm, XL:68cm |
|---|---|
| Stem | Giant Sport, 8-degree S:60mm, M:70mm, L:80mm, XL:90mm |
| Saddle | ErgoContact |
| Seatpost | Giant D-Fuse, alloy, 350mm |
Wheels & Tires
| Hubs | alloy, 28h |
|---|---|
| Rims | Giant double wall aluminum |
| Spokes | stainless, 14g |
| Front Tire | Giant CrossCut, anti-puncture, 700x42c |
| Rear Tire | Giant CrossCut, anti-puncture, 700x42c |
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 | 420 mm | 460 mm | 500 mm | 550 mm |
| Top tube | 590 mm | 600 mm | 610 mm | 625 mm |
| Head tube | 115 mm | 130 mm | 145 mm | 160 mm |
| Head-tube angle | 70.5° | 70.5° | 70.5° | 70.5° |
| Seat-tube angle | 73° | 73° | 73° | 73° |
| Chainstay / rear center | 450 mm | 450 mm | 450 mm | 450 mm |
| Wheelbase | 1088 mm | 1098 mm | 1109 mm | 1125 mm |
| Bottom-bracket drop | 62 mm | 62 mm | 62 mm | 62 mm |
| Reach | 404 mm | 410 mm | 416 mm | 427 mm |
| Stack | 606 mm | 620 mm | 634 mm | 648 mm |
| Standover height | 725 mm | 756 mm | 788 mm | 827 mm |
| Fork offset / rake | 42 mm | 42 mm | 42 mm | 42 mm |
| Trail | 85 mm | 85 mm | 85 mm | 85 mm |
| Crank length | 170 mm | 170 mm | 175 mm | 175 mm |
| Stem length | 70 mm | 80 mm | 90 mm | 100 mm |
| Handlebar width | 640 mm | 680 mm | 680 mm | 680 mm |
| Wheel size | 700C | 700C | 700C | 700C |
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: Its trail of 85 mm sits toward the higher-trail end. Its reach of 404 mm sits toward the longer end. Its wheelbase of 1088 mm sits toward the longer end.
Compared with 24 distinct hybrid geometries in the Small-equivalent size cohort from model years 2023–2027 in the Velopedia archive.M geometry
Archive context: Its trail of 85 mm sits toward the higher-trail end. Its reach of 410 mm sits toward the longer end. Its stack of 620 mm sits somewhat taller than typical.
Compared with 26 distinct hybrid geometries in the Medium-equivalent size cohort from model years 2023–2027 in the Velopedia archive.L geometry
Archive context: Its trail of 85 mm sits toward the higher-trail end. Its reach of 416 mm sits somewhat longer than typical. Its bottom-bracket drop of 62 mm sits somewhat shallower than typical.
Compared with 24 distinct hybrid geometries in the Large-equivalent size cohort from model years 2023–2027 in the Velopedia archive.XL geometry
Archive context: Its trail of 85 mm sits toward the higher-trail end. Its reach of 427 mm sits somewhat longer than typical. The chainstay of 450 mm sits somewhat longer than typical.
Compared with 19 distinct hybrid geometries in the XL-equivalent size cohort from model years 2023–2027 in the Velopedia archive.Parts & serviceability
Find replacement parts
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. 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 →
- 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 →
- 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 the full range under light load, measure chain wear and inspect the cassette or freewheel teeth. Skipping or hesitation can indicate wear, poor adjustment or mismatched parts.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: 2025 Giant Roam 2 · Hybrid · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: ALUXX-grade aluminum, disc · Fork: SR Suntour NEX HLO 700C, 63mm
Suspension
Evaluate the suspension →Archived: Fork: SR Suntour NEX HLO 700C, 63mm
Drivetrain
Check drivetrain wear →Archived: Shifters: microSHIFT Advent, 1x9 · Rear derailleur: micoSHIFT Advent, 1x9 · Crankset: Forged alloy, 40t S:170mm, M:170mm, L:175mm, XL:175mm · Bottom bracket: sealed cartridge · Cassette: micorSHIFT Advent, 11x46 · Chain: KMC X9
Brakes
Inspect the brakes →Archived: Brakes: Tektro TKD-143 hydraulic, [F]160mm, [R]160mm rotors
Wheels and tires
Check wheels and tires →Archived: Rims: Giant double wall aluminum · Hubs: alloy, 28h · Front tire: Giant CrossCut, anti-puncture, 700x42c · Rear tire: Giant CrossCut, anti-puncture, 700x42c
Controls and contact points
Archived: Handlebar: Giant Sport XC, 31.8mm S:64cm, M:68cm, L:68cm, XL:68cm · Stem: Giant Sport, 8-degree S:60mm, M:70mm, L:80mm, XL:90mm · Seatpost: Giant D-Fuse, alloy, 350mm · Saddle: ErgoContact · Pedals: platform
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.




