Velopedia Bicycle Archive
2025 Giant Contend AR 4
Original manufacturer specifications including geometry for 5 published sizes.
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What Velopedia knows
- Model year
- 2025
- Category
- Road
- Original MSRP
- $1,200.00
- Sizes
- XS, S, M, M/L, L, XL
- Colors
- Milky Way, Good Gray
- Geometry
- 5 manufacturer sizes · Geometry context
- Record coverage
- 22 preserved details · 2 archived images · original MSRP · preserved geometry
- Archive ID
- 900001206
Frameset
| Frame Construction | ALUXX-grade aluminum, 12x142mm thru-axle, disc |
|---|---|
| Frame Material | Aluminum |
| Fork | Advanced-grade composite, full-composite OverDrive steerer, 12x100mm thru-axle, disc |
| Fork Material | Carbon Fiber |
| Rear Shock | N/A |
Drivetrain
| Shifters | Shimano Claris |
|---|---|
| Front Derailleur | Shimano Claris |
| Rear Derailleur | Shimano Claris |
| Crankset | FSA Tempo, 34/50 XS:170mm, S:170mm, M:172.5mm, M/L:172.5mm, L:175mm, XL:175mm |
| Bottom Bracket | cartridge |
| Cassette | Shimano CS-HG50, 11x34 |
| Chain | KMC Z72 |
Brakes
| Brakes | Tektro MD-C550 mechanical, Giant MPH rotors [F]160mm, [R]160mm |
|---|
Cockpit & Contact Points
| Handlebar | Giant Connect XS:40cm, S:40cm, M:42cm, M/L:42cm, L:44cm, XL:44cm |
|---|---|
| Stem | Giant Sport XS:80mm, S:90mm, M:100mm, M/L:110mm, L:110mm, XL:110mm |
| Saddle | Giant Approach |
| Seatpost | Giant D-Fuse, alloy, 14mm offset |
Wheels & Tires
| Hubs | Giant alloy, 12mm thru-axle |
|---|---|
| Rims | Giant S-R2 Disc wheelset, alloy |
| Spokes | Sapim |
| Front Tire | Giant S-R3 AC, 700x32c (34mm) |
| Rear Tire | Giant S-R3 AC, 700x32c (34mm) |
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 | ML | L | XL |
|---|---|---|---|---|---|
| Seat tube | 445 mm | 480 mm | 515 mm | 535 mm | 565 mm |
| Top tube | 535 mm | 550 mm | 565 mm | 580 mm | 595 mm |
| Head tube | 135 mm | 150 mm | 170 mm | 190 mm | 215 mm |
| Head-tube angle | 71.8° | 72° | 72.5° | 72.5° | 72.5° |
| Seat-tube angle | 74° | 73.5° | 73° | 73° | 73° |
| Chainstay / rear center | 422 mm | 422 mm | 422 mm | 422 mm | 422 mm |
| Wheelbase | 1003 mm | 1011 mm | 1015 mm | 1031 mm | 1046 mm |
| Bottom-bracket drop | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm |
| Reach | 375 mm | 380 mm | 383 mm | 392 mm | 400 mm |
| Stack | 559 mm | 574 mm | 595 mm | 614 mm | 638 mm |
| Standover height | 759 mm | 783 mm | 810 mm | 829 mm | 856 mm |
| Fork offset / rake | 53 mm | 53 mm | 53 mm | 53 mm | 53 mm |
| Trail | 61.3 mm | 59.6 mm | 56.4 mm | 56.4 mm | 56.4 mm |
| Crank length | 170 mm | 172.5 mm | 172.5 mm | 175 mm | 175 mm |
| Stem length | 90 mm | 100 mm | 100 mm | 110 mm | 110 mm |
| Handlebar width | 400 mm | 420 mm | 420 mm | 440 mm | 440 mm |
| Wheel size | 700C | 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 bottom-bracket drop of 80 mm sits toward the deeper-drop end. Its stack of 559 mm sits toward the taller end. The chainstay of 422 mm sits toward the longer rear-center end.
Compared with 81 distinct road geometries in the Small-equivalent size cohort from model years 2023–2027 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 bottom-bracket drop of 80 mm sits toward the deeper-drop end. The chainstay of 422 mm sits toward the longer rear-center end. Its stack of 574 mm sits somewhat taller than typical.
Compared with 82 distinct road geometries in the Medium-equivalent size cohort from model years 2023–2027 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 ML geometry
Archive context: Its stack of 595 mm sits toward the taller end. Its bottom-bracket drop of 80 mm sits toward the deeper-drop end. Its trail of 56.4 mm sits toward the lower-trail end.
Compared with 82 distinct road geometries in the Medium-equivalent size cohort from model years 2023–2027 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 ML geometry L geometry
Archive context: Its bottom-bracket drop of 80 mm sits toward the deeper-drop end. Its stack of 614 mm sits toward the taller end. Its trail of 56.4 mm sits toward the lower-trail end.
Compared with 70 distinct road geometries in the Large-equivalent size cohort from model years 2023–2027 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 80 mm sits toward the deeper-drop end. Its stack of 638 mm sits toward the taller end. The chainstay of 422 mm sits toward the longer rear-center end.
Compared with 63 distinct road geometries in the XL-equivalent size cohort from model years 2023–2027 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
KMC Z72
Exact archived model
Shimano CS-HG50, 11x34
Exact archived model
Tektro MD-C550 mechanical
Brake model identified — verify pad shape
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 →
- 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 19 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: 2025 Giant Contend AR 4 · Road · Published sizes: XS, S, M, M/L, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: ALUXX-grade aluminum, 12x142mm thru-axle, disc · Fork: Advanced-grade composite, full-composite OverDrive steerer, 12x100mm thru-axle, disc · Carbon Fiber
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano Claris · Front derailleur: Shimano Claris · Rear derailleur: Shimano Claris · Crankset: FSA Tempo, 34/50 XS:170mm, S:170mm, M:172.5mm, M/L:172.5mm, L:175mm, XL:175mm · Bottom bracket: cartridge · Cassette: Shimano CS-HG50, 11x34 · Chain: KMC Z72
Brakes
Inspect the brakes →Archived: Brakes: Tektro MD-C550 mechanical, Giant MPH rotors [F]160mm, [R]160mm
Wheels and tires
Check wheels and tires →Archived: Rims: Giant S-R2 Disc wheelset, alloy · Hubs: Giant alloy, 12mm thru-axle · Front tire: Giant S-R3 AC, 700x32c (34mm) · Rear tire: Giant S-R3 AC, 700x32c (34mm)
Controls and contact points
Archived: Handlebar: Giant Connect XS:40cm, S:40cm, M:42cm, M/L:42cm, L:44cm, XL:44cm · Stem: Giant Sport XS:80mm, S:90mm, M:100mm, M/L:110mm, L:110mm, XL:110mm · Seatpost: Giant D-Fuse, alloy, 14mm offset · Saddle: Giant Approach
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.