
Velopedia Bicycle Archive
2020 Giant Reign SX 29
Original manufacturer specifications including geometry for 4 published sizes.
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What Velopedia knows
- Model year
- 2020
- Category
- Mountain
- Original MSRP
- $4,000.00
- Sizes
- S, M, L, XL
- Colors
- Biking Red
- Geometry
- 4 manufacturer sizes · Geometry context
- Record coverage
- 22 preserved details · archived image · original MSRP · preserved geometry
- Archive ID
- 900002408
Frameset
| Frame Construction | ALUXX SL-Grade Aluminum, 146mm |
|---|---|
| Frame Material | Aluminum |
| Fork | Fox 36 Performance Elite, GRIP2, 170mm,110x15 Kabolt, tapered |
| Rear Shock | Fox DHX2 Performance Elite |
Drivetrain
| Shifters | SRAM NX Eagle |
|---|---|
| Front Derailleur | N/A |
| Rear Derailleur | SRAM NX Eagle |
| Crankset | TruVativ Descendent 6k Eagle DUB, 32t with MRP alloy guide |
| Bottom Bracket | SRAM DUB, press fit |
| Cassette | SRAM NX Eagle, 11x50 |
| Chain | SRAM NX Eagle |
| Pedals | N/A |
Brakes
| Brakes | SRAM Code R |
|---|
Cockpit & Contact Points
| Handlebar | Giant Contact SL TR35, 800x35mm, 20mm rise |
|---|---|
| Stem | Giant Contact SL 35 |
| Saddle | Giant Contact (neutral) |
| Seatpost | Giant Contact Switch dropper post with remote, 30.9 |
Wheels & Tires
| Hubs | [F] Giant Tracker Performance Boost 15x110, sealed bearing [R] Giant Tracker Performance Boost 12x148, sealed bearing |
|---|---|
| Rims | Giant AM 29, tubeless ready sleeve-joint rim, 30mm inner width |
| Spokes | Sapim |
| Front Tire | [F] Maxxis Minion DHF 29x2.5 WT, EXO, TR [R] Maxxis Minion DHR II 29x2.4 WT, EXO, TR, tubeless |
| Rear Tire | [F] Maxxis Minion DHF 29x2.5 WT, EXO, TR [R] Maxxis Minion DHR II 29x2.4 WT, EXO, TR, tubeless |
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 | 431 mm | 431 mm | 464 mm | 496 mm |
| Top tube | 574 mm | 601 mm | 640 mm | 666 mm |
| Head tube | 100 mm | 110 mm | 110 mm | 120 mm |
| Head-tube angle | 64.5° | 64.5° | 64.5° | 64.5° |
| Seat-tube angle | 76.3° | 76.3° | 76.3° | 76.3° |
| Chainstay / rear center | 439 mm | 439 mm | 439 mm | 439 mm |
| Wheelbase | 1191 mm | 1220 mm | 1262 mm | 1289 mm |
| Bottom-bracket drop | 27 mm | 27 mm | 27 mm | 27 mm |
| Reach | 423 mm | 451 mm | 488 mm | 511 mm |
| Stack | 622 mm | 622 mm | 631 mm | 640 mm |
| Standover height | 757 mm | 759 mm | 781 mm | 804 mm |
| Fork offset / rake | 44 mm | 44 mm | 44 mm | 44 mm |
| Trail | 133 mm | 133 mm | 133 mm | 133 mm |
| Crank length | 165 mm | 170 mm | 170 mm | 170 mm |
| Stem length | 40 mm | 40 mm | 40 mm | 50 mm |
| Handlebar width | 800 mm | 800 mm | 800 mm | 800 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: Its trail of 133 mm sits toward the higher-trail end. Its wheelbase of 1191 mm sits toward the longer end. The head angle of 64.5° sits toward the slacker end.
Compared with 87 distinct mountain geometries in the Small-equivalent size cohort from model years 2018–2022 in the Velopedia archive.M geometry
Archive context: Its wheelbase of 1220 mm sits toward the longer end. Its trail of 133 mm sits toward the higher-trail end. The head angle of 64.5° sits toward the slacker end.
Compared with 91 distinct mountain geometries in the Medium-equivalent size cohort from model years 2018–2022 in the Velopedia archive.L geometry
Archive context: Its reach of 488 mm sits toward the longer end. Its wheelbase of 1262 mm sits toward the longer end. Its trail of 133 mm sits toward the higher-trail end.
Compared with 86 distinct mountain geometries in the Large-equivalent size cohort from model years 2018–2022 in the Velopedia archive.XL geometry
Archive context: Its wheelbase of 1289 mm sits toward the longer end. Its trail of 133 mm sits toward the higher-trail end. Its reach of 511 mm sits toward the longer end.
Compared with 77 distinct mountain geometries in the XL-equivalent size cohort from model years 2018–2022 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 and shock were last serviced. Check the stanchions for damage, look for oil at the seals, cycle both units through their travel and test the suspension pivots for 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. 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 23 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: 2020 Giant Reign SX 29 · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: ALUXX SL-Grade Aluminum, 146mm · Fork: Fox 36 Performance Elite, GRIP2, 170mm,110x15 Kabolt, tapered
Suspension
Evaluate the suspension →Archived: Fork: Fox 36 Performance Elite, GRIP2, 170mm,110x15 Kabolt, tapered · Rear shock: Fox DHX2 Performance Elite
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM NX Eagle · Rear derailleur: SRAM NX Eagle · Crankset: TruVativ Descendent 6k Eagle DUB, 32t with MRP alloy guide · Bottom bracket: SRAM DUB, press fit · Cassette: SRAM NX Eagle, 11x50 · Chain: SRAM NX Eagle
Brakes
Inspect the brakes →Archived: Brakes: SRAM Code R
Wheels and tires
Check wheels and tires →Archived: Rims: Giant AM 29, tubeless ready sleeve-joint rim, 30mm inner width · Hubs: [F] Giant Tracker Performance Boost 15x110, sealed bearing [R] Giant Tracker Performance Boost 12x148, sealed bearing · Front tire: [F] Maxxis Minion DHF 29x2.5 WT, EXO, TR [R] Maxxis Minion DHR II 29x2.4 WT, EXO, TR, tubeless · Rear tire: [F] Maxxis Minion DHF 29x2.5 WT, EXO, TR [R] Maxxis Minion DHR II 29x2.4 WT, EXO, TR, tubeless
Controls and contact points
Archived: Handlebar: Giant Contact SL TR35, 800x35mm, 20mm rise · Stem: Giant Contact SL 35 · Seatpost: Giant Contact Switch dropper post with remote, 30.9 · Saddle: Giant Contact (neutral)
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.




