Velopedia Bicycle Archive
2015 Giant ATX 27.5 2
Original specifications: Shimano Tourney · 7-speed rear derailleur · 27.5 wheels · geometry for 6 published sizes.
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At a glance
- Model year
- 2015
- Category
- Mountain
- Original MSRP
- $510.00
- Sizes
- XXS, XS, S, M, L, XL
- Colors
- Black/Blue, Red/White, Black/Orange
- Geometry
- 6 manufacturer sizes
- In this record
- 25 specifications · 5 archived images · original MSRP · geometry
- Archive ID
- 1115392
Model history 1 other year
Original buildAluminum · Mountian mix · 27.5
Frameset
| Frame Construction | ALUXX-grade aluminum |
|---|---|
| Frame Material | Aluminum |
| Fork | SR Suntour XCT, 100mm travel |
| Fork Material | Suspension |
Drivetrain
| Component Group | Mountian mix |
|---|---|
| Shifters | Shimano EF40 |
| Front Derailleur | Shimano Tourney |
| Rear Derailleur | Shimano Tourney |
| Crankset | SR Suntour XCE, 28/38/48 |
| Bottom Bracket | SR Suntour sealed |
| Cassette | Shimano TZ31 14x34, 7-speed freewheel |
| Rear Cogs | Shimano TZ31 14x34, 7-speed freewheel |
| Chain | KMC Z51 |
| Pedals | Plastic Platform |
Brakes
| Brakes | Tektro Aires, Mechanical disc, 160mm |
|---|
Cockpit & Contact Points
| Handlebar | High-tensile steel, Low rise, 25.4mm |
|---|---|
| Stem | Giant Sport |
| Saddle | Giant Connect, Upright |
| Seatpost | Alloy, 30.9mm |
Wheels & Tires
| Hubs | Alloy Disc, 32h |
|---|---|
| Rims | Giant Alloy, Double wall |
| Spokes | Stainless Steel, 14g |
| Front Tire | Giant Sport, 27.5X1.95 |
| Rear Tire | Giant Sport, 27.5X1.95 |
| Wheel Size | 27.5 |
Geometry
Frame measurements by size.
Reference frame view
Select an available measurement to locate it on the frame.
All geometry measurements6 sizes · 7 measurements
| Measurement | XXS/ | XS/14.5 | S/16 | M/18 | L/20 | XL/ |
|---|---|---|---|---|---|---|
| Top tube | 530.86 mm | 551.18 mm | 568.96 mm | 589.28 mm | 609.6 mm | 629.92 mm |
| Head tube | 93.98 mm | 109.22 mm | 114.3 mm | 127 mm | 132.08 mm | 139.7 mm |
| Head-tube angle | 70° | 70.5° | 70.5° | 70.5° | 70.5° | 70.5° |
| Seat-tube angle | 74° | 73.5° | 73° | 73° | 72.5° | 72.5° |
| Chainstay / rear center | 434.34 mm | 434.34 mm | 434.34 mm | 434.34 mm | 434.34 mm | 434.34 mm |
| Wheelbase | 1033.78 mm | 1049.02 mm | 1059.18 mm | 1079.5 mm | 1092.2 mm | 1112.52 mm |
| Standover height | 680.72 mm | 708.66 mm | 734.06 mm | 772.16 mm | 807.72 mm | 822.96 mm |
Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Parts & serviceability
Find replacement parts
More parts (2)

ENVE Twin Bolt Seatpost - Zero Offset UD Carbon, 30.9x400mm
30.9x400mm
Replacement option · verify fit
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. 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.
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: 2015 Giant ATX 27.5 2 · Mountain · Published sizes: XXS, XS, S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: ALUXX-grade aluminum · Fork: SR Suntour XCT, 100mm travel · Suspension
Suspension
Evaluate the suspension →Archived: Fork: SR Suntour XCT, 100mm travel
Drivetrain
Check drivetrain wear →Archived: Group: Mountian mix · Shifters: Shimano EF40 · Front derailleur: Shimano Tourney · Rear derailleur: Shimano Tourney · Crankset: SR Suntour XCE, 28/38/48 · Bottom bracket: SR Suntour sealed · Cassette: Shimano TZ31 14x34, 7-speed freewheel · Rear cogs: Shimano TZ31 14x34, 7-speed freewheel · Chain: KMC Z51
Brakes
Inspect the brakes →Archived: Brakes: Tektro Aires, Mechanical disc, 160mm
Wheels and tires
Check wheels and tires →Archived: Wheel size: 27.5 · Rims: Giant Alloy, Double wall · Hubs: Alloy Disc, 32h · Front tire: Giant Sport, 27.5X1.95 · Rear tire: Giant Sport, 27.5X1.95
Controls and contact points
Archived: Handlebar: High-tensile steel, Low rise, 25.4mm · Stem: Giant Sport · Seatpost: Alloy, 30.9mm · Saddle: Giant Connect, Upright · Pedals: Plastic Platform
Before and during the test ride
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Gallery5 images
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.
