Bicycle Archive · Specification reportBicycle Archive · Specification reportVelopedia Archive ID 900003894
| Model year | 2018 |
|---|---|
| Brand | Specialized |
| Model | Stumpjumper ST Expert 29 |
| Bicycle type | Mountain |
| Archive ID | 900003894 |
| Original MSRP | $5,000.00 |
| Colors | Satin /Dusty Turquoise/Team Yellow; Satin/Carbon/Black |
| Sizes | S; M; L; XL |
| Frame construction | FACT 11m, full carbon chassis and rear end, asymmetrical design, 29 Trail Geometry, SWAT™ Door integration, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 120mm of travel |
|---|---|
| Frame material | Carbon Fiber |
| Fork | RockShox Pike RC, DebonAir, rebound / low-speed compression adjust, tapered steerer, 51mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 130mm of travel |
| Rear shock | RockShox Deluxe RT3, Rx Trail Tune, rebound and 3-position compression adjust, 190x42.5mm |
| Shifters | SRAM GX Eagle, trigger, 12-speed |
|---|---|
| Rear derailleur | SRAM GX Eagle, 12-speed |
| Crankset | Truvativ Descendant, aluminum, Boost™ 148, 170mm crankarm, 24mm spindle; chainrings: 30T |
| Bottom bracket | SRAM GXP |
| Cassette | SRAM GX Eagle, 12-speed, 10-50t |
| Chain | SRAM GX Eagle, 12-speed w/ PowerLock® |
| Pedals | Specialized Dirt |
| Brakes | (F) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm rotor / (R) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm rotor |
|---|
| Handlebar | Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp |
|---|---|
| Stem | Specialized Trail, forged alloy, 4-bolt, 5mm rise, 40mm |
| Saddle | Body Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm |
| Seatpost | Command Post IRcc, 16-position micro-height adjustable, two-bolt head, bottom mount cable routing, remote SRL lever, 34.9mm, S: 130mm, M/L/XL: 160mm of travel |
| Hubs | (F) Specialized, sealed cartridge bearings, 15x110mm spacing, 28h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h |
|---|---|
| Rims | Roval Traverse Carbon 29, hookless carbon, 30mm inner width, 28h, tubeless ready, hand-built |
| Spokes | DT Swiss Industry |
| Front tire | Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 29x2.3" |
| Rear tire | Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.3" |
| Seat tube | 380 mm |
|---|---|
| Effective top tube | 569 mm |
| Head tube | 95 mm |
| Head-tube angle | 67.5° |
| Seat-tube angle | 75.8° |
| Chainstay / rear center | 437 mm |
| Wheelbase | 1141 mm |
| Bottom-bracket drop | 39 mm |
| Bottom-bracket height | 333 mm |
| Reach | 415 mm |
| Stack | 607 mm |
| Standover height | 740 mm |
| Fork offset / rake | 51 mm |
| Front center | 707 mm |
| Trail | 99 mm |
| Fork length / axle-to-crown | 540 mm |
| Seatpost length | 369 mm |
| Crank length | 170 mm |
| Stem length | 40 mm |
| Handlebar width | 780 mm |
| Seat tube | 410 mm |
|---|---|
| Effective top tube | 592 mm |
| Head tube | 95 mm |
| Head-tube angle | 67.5° |
| Seat-tube angle | 75.5° |
| Chainstay / rear center | 437 mm |
| Wheelbase | 1161 mm |
| Bottom-bracket drop | 39 mm |
| Bottom-bracket height | 333 mm |
| Reach | 435 mm |
| Stack | 607 mm |
| Standover height | 743 mm |
| Fork offset / rake | 51 mm |
| Front center | 727 mm |
| Trail | 99 mm |
| Fork length / axle-to-crown | 540 mm |
| Seatpost length | 429 mm |
| Crank length | 170 mm |
| Stem length | 40 mm |
| Handlebar width | 780 mm |
| Seat tube | 455 mm |
|---|---|
| Effective top tube | 624 mm |
| Head tube | 125 mm |
| Head-tube angle | 67.5° |
| Seat-tube angle | 75.1° |
| Chainstay / rear center | 437 mm |
| Wheelbase | 1192 mm |
| Bottom-bracket drop | 39 mm |
| Bottom-bracket height | 333 mm |
| Reach | 455 mm |
| Stack | 635 mm |
| Standover height | 755 mm |
| Fork offset / rake | 51 mm |
| Front center | 758 mm |
| Trail | 99 mm |
| Fork length / axle-to-crown | 540 mm |
| Seatpost length | 429 mm |
| Crank length | 170 mm |
| Stem length | 50 mm |
| Handlebar width | 780 mm |
| Seat tube | 505 mm |
|---|---|
| Effective top tube | 657 mm |
| Head tube | 140 mm |
| Head-tube angle | 67.5° |
| Seat-tube angle | 74.7° |
| Chainstay / rear center | 437 mm |
| Wheelbase | 1223 mm |
| Bottom-bracket drop | 39 mm |
| Bottom-bracket height | 333 mm |
| Reach | 480 mm |
| Stack | 649 mm |
| Standover height | 768 mm |
| Fork offset / rake | 51 mm |
| Front center | 789 mm |
| Trail | 99 mm |
| Fork length / axle-to-crown | 540 mm |
| Seatpost length | 429 mm |
| Crank length | 170 mm |
| Stem length | 50 mm |
| Handlebar width | 780 mm |
Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 27, 2026.