Specialized Stumpjumper Alloy 29″ Full Suspension Mountain Bike (Upgraded GX AXS Build)

Precision-Engineered Trail Dominator
Built for aggressive cross-country climbs and technical descents, this upgraded Specialized Stumpjumper Alloy 29″ combines lightweight aluminum construction with SRAM’s cutting-edge electronic drivetrain (GX AXS 1×12). Ideal for riders seeking responsive handling on mixed terrain or those upgrading from entry-level hardtails.

Key Performance Upgrades vs. Stock Model
| Feature | Stock Model | Upgraded Version |
|————————-|———————-|————————-|
| Front Suspension | Standard Pike | RockShox Pike Ultimate (140mm travel) |
| Drivetrain | Mechanical 1×11 | SRAM GX AXS Electronic (10-52T cassette) |
| Braking System | Standard Disc | Shimano SLX 2x Piston (203mm/180mm rotors) |
| Weight Savings | N/A | 15% lighter components¹ |

Technical Specifications
– Frame: Aluminum S4 geometry (425mm seat tube), optimized for 5’8″-6’2″ riders²
– Suspension: X-Fusion 02 Pro RL rear (130mm) + RockShox Pike Ultimate fork
– Drivetrain: SRAM GX Eagle 1×12 (32T crankset), compatible with tubeless tires (Maxxis Assegai/DHR II)
– Control: Wireless SRAM eTap AXS shifting + TranzX dropper seatpost (170mm travel)
– Weight: 33 lbs (15% lighter components vs stock)

Condition & Value Highlights
✅ Professionally serviced: New chain/cassette, rear brake pads, wheel truing, bottom bracket replacement
✅ Performance-ready: Tubeless-ready tires, aligned derailleur hanger, integrated headset
✅ Upgrade value: $800+ savings vs new price while retaining premium components³

Ideal For
– Intermediate to advanced trail riders
– Daily commutes requiring full suspension comfort
– Endurance events needing reliable electronic shifting

Warranty & Support
60-day limited mechanical warranty for local purchases. Includes all tuning accessories (eTap charger, steer tube spacers) and minor component replacements within condition ratings.

¹ Based on component weight comparisons
² Suggested height range; consult geometry chart for precise fit
³ MSRP $2,800 vs current market value of upgraded components