
SRAM GX Eagle Transmission 12-Speed Chain Silver, 126 link
126 link
Velopedia Bicycle Archive
Original specifications: 29″ front / 27.5″ rear wheels · 48.46lbs / 21.98kg published weight · geometry for 5 published sizes.
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At a glance
| Frame Construction | Carbon C MX 150mm Travel, 4-Bar |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | FOX 38 Float Performance Elite, Grip X2, 160mm |
| Rear Shock | FOX Float X Performance Elite, 205x60 |
| Rear Derailleur | SRAM GX Eagle AXS T-Type, 12spd |
|---|---|
| Crankset | SRAM GX Eagle Cranks, 160mm |
| Cassette | SRAM GX 1275 Eagle T-Type, 10-52t |
| Chain | SRAM GX Eagle T-Type, Flattop, 12spd |
| Brakes | SRAM Maven Bronze |
|---|
| Headset | Cane Creek 50 IS Integrated Headset |
|---|---|
| Handlebar | OneUp Aluminum Bar, 35mm Rise, 800mm |
| Stem | OneUp Enduro Stem, 42mm |
| Saddle | SDG Bel-Air V3 Max Lux-Alloy Atmos |
| Seatpost | OneUp Dropper Post, 31.6 |
| Hubs | (F) E13 SL, 15x110, 6-Bolt, 32h / (R) E13 SL E-Spec, 12x148, XD, 6-Bolt, 32h |
|---|---|
| Rims | (F) Reserve 30|HD AL 6069 / (R) Reserve 30|HD AL 6069 |
| Front Tire | Maxxis Assegai 29"x2.5", 3C MaxxGrip, EXO+ |
| Rear Tire | Maxxis Minion DHRII 27.5"x2.5", 3C MaxxTerra, DoubleDown |
| Wheel Size | Mx |
Frame measurements by size.
Published frame view
Select an available measurement to locate it on the frame.
| Measurement | S | M | L | XL | XXL |
|---|---|---|---|---|---|
| Seat tube | 380 mm | 400 mm | 420 mm | 460 mm | 500 mm |
| Top tube | 573 mm | 601 mm | 622 mm | 645 mm | 673 mm |
| Head tube | 110 mm | 120 mm | 130 mm | 145 mm | 160 mm |
| Head-tube angle | 64.2° | 64.2° | 64.2° | 64.2° | 64.2° |
| Seat-tube angle | 77.5° | 77.5° | 77.5° | 77.5° | 77.5° |
| Chainstay / rear center | 439 mm | 440 mm | 443 mm | 446 mm | 450 mm |
| Wheelbase | 1210 mm | 1240 mm | 1268 mm | 1297 mm | 1333 mm |
| Bottom-bracket drop | 28 mm | 28 mm | 28 mm | 28 mm | 28 mm |
| Bottom-bracket height | 344 mm | 344 mm | 344 mm | 344 mm | 344 mm |
| Reach | 435 mm | 460 mm | 480 mm | 500 mm | 525 mm |
| Stack | 623 mm | 632 mm | 641 mm | 655 mm | 668 mm |
| Standover height | 741 mm | 735 mm | 734 mm | 734 mm | 728 mm |
| Front center | 771 mm | 800 mm | 825 mm | 851 mm | 883 mm |
Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.
Parts & serviceability

126 link

10-52t

29x2.5
Replacement option · verify fit

27.5x2.5
Replacement option · verify fit

52T Max

31.6x240mm Travel
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.
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.
Archived: 2026 Santa Cruz Vala GX AXS · Electric-assist · Published sizes: S, M, L, XL, XXL
Archived: Frame: Carbon C MX 150mm Travel, 4-Bar · Fork: FOX 38 Float Performance Elite, Grip X2, 160mm
Archived: Fork: FOX 38 Float Performance Elite, Grip X2, 160mm · Rear shock: FOX Float X Performance Elite, 205x60
Archived: Rear derailleur: SRAM GX Eagle AXS T-Type, 12spd · Crankset: SRAM GX Eagle Cranks, 160mm · Cassette: SRAM GX 1275 Eagle T-Type, 10-52t · Chain: SRAM GX Eagle T-Type, Flattop, 12spd
Archived: Brakes: SRAM Maven Bronze
Archived: Wheel size: MX · Rims: (F) Reserve 30|HD AL 6069 / (R) Reserve 30|HD AL 6069 · Hubs: (F) E13 SL, 15x110, 6-Bolt, 32h / (R) E13 SL E-Spec, 12x148, XD, 6-Bolt, 32h · Front tire: Maxxis Assegai 29"x2.5", 3C MaxxGrip, EXO+ · Rear tire: Maxxis Minion DHRII 27.5"x2.5", 3C MaxxTerra, DoubleDown
Archived: Headset: Cane Creek 50 IS Integrated Headset · Handlebar: OneUp Aluminum Bar, 35mm Rise, 800mm · Stem: OneUp Enduro Stem, 42mm · Seatpost: OneUp Dropper Post, 31.6 · Saddle: SDG Bel-Air V3 Max Lux-Alloy Atmos
Archived: Santa Cruz Vala GX AXS · electric-assist identification
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.