
SRAM GX Eagle 12-Speed Chain Silver, 126 links
Replacement option
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Original specifications: geometry for 3 published sizes.
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At a glance
| Frame Construction | Specialized A1 premium butted alloy, zero-stack head tube, internal cable routing, 135x9mm forged dropouts, chainstay-mounted disc brake, replaceable alloy derailleur hanger, stealth rack mounts, dropper post compatible |
|---|---|
| Frame Material | Aluminum |
| Fork | RockShox Judy, Solo Air, Turnkey damper, 42mm offset, QR, 80/90/100mm travel (size-specific), alloy steerer |
| Fork Material | Aluminum |
| Shifters | SRAM SX Eagle, trigger, 12-speed |
|---|---|
| Rear Derailleur | SRAM SX Eagle, 12-speed |
| Crankset | SRAM SX Eagle, Powerspline |
| Bottom Bracket | SRAM Powerspline |
| Cassette | SRAM PG-1210 Eagle, 11-50t |
| Chain | SRAM SX Eagle, 12-speed |
| Pedals | Specialized Pedals |
| Brakes | (F) SRAM Level, hydraulic disc, 180/160mm / (R) SRAM Level, 2-piston caliper, hydraulic disc, 180mm |
|---|
| Handlebar | Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm |
|---|---|
| Stem | 3D-forged alloy, 31.8mm, 7-degree rise |
| Saddle | Bridge Sport, Steel rails, 155/143mm |
| Seatpost | Alloy, 2-bolt clamp, 30.9mm |
| Hubs | (F) Formula DC-20, 6-Bolt, disc, 100x9mm spacing, quick-release / (R) Formula DC-22, 6-Bolt freehub, disc, 135x9mm spacing, quick-release |
|---|---|
| Rims | Specialized Alloy, hookless, Tubeless ready, 25mm inner width |
| Spokes | Stainless, 14g |
| Front Tire | Fast Trak Control 2Bliss Ready T5, 27.5x2.35" |
| Rear Tire | Fast Trak Control 2Bliss Ready T5, 27.5x2.35" |
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
| Measurement | XS | S | M |
|---|---|---|---|
| Seat tube | 310 mm | 350 mm | 400 mm |
| Effective top tube | 541 mm | 565 mm | 589 mm |
| Head tube | 95 mm | 100 mm | 105 mm |
| Head-tube angle | 68° | 68° | 68° |
| Seat-tube angle | 73.5° | 73.5° | 73.5° |
| Chainstay / rear center | 440 mm | 440 mm | 440 mm |
| Wheelbase | 1067 mm | 1092 mm | 1118 mm |
| Bottom-bracket drop | 43 mm | 43 mm | 43 mm |
| Bottom-bracket height | 310 mm | 310 mm | 310 mm |
| Reach | 375 mm | 395 mm | 415 mm |
| Stack | 559 mm | 573 mm | 589 mm |
| Standover height | 658 mm | 695 mm | 735 mm |
| Fork offset / rake | 42 mm | 42 mm | 42 mm |
| Front center | 630 mm | 656 mm | 682 mm |
| Trail | 97 mm | 97 mm | 97 mm |
| Fork length / axle-to-crown | 475 mm | 485 mm | 495 mm |
| Seatpost length | 300 mm | 350 mm | 400 mm |
| Crank length | 165 mm | 170 mm | 170 mm |
| Stem length | 40 mm | 40 mm | 60 mm |
| Handlebar width | 700 mm | 720 mm | 740 mm |
Dimensions as recorded.
Parts & serviceability

Replacement option


Replacement option
Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying 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: 2022 Specialized Rockhopper Expert 27.5 · Mountain · Published sizes: XS, S, M
Archived: Frame: Specialized A1 premium butted alloy, zero-stack head tube, internal cable routing, 135x9mm forged dropouts, chainstay-mounted disc brake, replaceable alloy derailleur hanger, stealth rack mounts, dropper post compatible · Fork: RockShox Judy, Solo Air, Turnkey damper, 42mm offset, QR, 80/90/100mm travel (size-specific), alloy steerer · Aluminum
Archived: Fork: RockShox Judy, Solo Air, Turnkey damper, 42mm offset, QR, 80/90/100mm travel (size-specific), alloy steerer
Archived: Shifters: SRAM SX Eagle, trigger, 12-speed · Rear derailleur: SRAM SX Eagle, 12-speed · Crankset: SRAM SX Eagle, Powerspline · Bottom bracket: SRAM Powerspline · Cassette: SRAM PG-1210 Eagle, 11-50t · Chain: SRAM SX Eagle, 12-speed
Archived: Brakes: (F) SRAM Level, hydraulic disc, 180/160mm / (R) SRAM Level, 2-piston caliper, hydraulic disc, 180mm
Archived: Rims: Specialized Alloy, hookless, Tubeless ready, 25mm inner width · Hubs: (F) Formula DC-20, 6-Bolt, disc, 100x9mm spacing, quick-release / (R) Formula DC-22, 6-Bolt freehub, disc, 135x9mm spacing, quick-release · Front tire: Fast Trak Control 2Bliss Ready T5, 27.5x2.35" · Rear tire: Fast Trak Control 2Bliss Ready T5, 27.5x2.35"
Archived: Handlebar: Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm · Stem: 3D-forged alloy, 31.8mm, 7-degree rise · Seatpost: Alloy, 2-bolt clamp, 30.9mm · Saddle: Bridge Sport, Steel rails, 155/143mm · Pedals: Specialized Pedals
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.