# Trek Fuel EX 8 Gen 7 vs Specialized Stumpjumper 15 Alloy: specs and price compared

A sourced, side-by-side comparison of the Trek Fuel EX 8 Gen 7 (Trek) and Specialized Stumpjumper 15 Alloy (Specialized) among mountain bikes. Specialized Stumpjumper 15 Alloy is the cheaper of the two at $3000.

## Side by side

| Spec | Trek Fuel EX 8 Gen 7 | Specialized Stumpjumper 15 Alloy |
| --- | --- | --- |
| US price | $3799.99 | $3000 |
| Brand | Trek | Specialized |
| Released | 2026 | 2025 |
| Frame material | Alpha NEXT Platinum Aluminum | M5 Alloy |
| Wheel size | 29" | 29" (MX 27.5" rear compatible) |
| Fork travel (mm) | 150 | 150 |
| Rear travel (mm) | 145 | 145 |
| Suspension type | ABP (Active Braking Pivot) | Horst-link (FSR) |
| Drivetrain speeds | 12 | 12 |
| Groupset | SRAM Eagle 70 | Shimano Deore M6100 |
| Brake type | SRAM DB8, 4-piston hydraulic disc | Shimano BR-MT420, 4-piston hydraulic disc |
| Weight (lb) | 37.2 | 36.53 |

## Key differences

- Frame material: Trek Fuel EX 8 Gen 7 Alpha NEXT Platinum Aluminum vs Specialized Stumpjumper 15 Alloy M5 Alloy
- Wheel size: Trek Fuel EX 8 Gen 7 29" vs Specialized Stumpjumper 15 Alloy 29" (MX 27.5" rear compatible)
- Suspension type: Trek Fuel EX 8 Gen 7 ABP (Active Braking Pivot) vs Specialized Stumpjumper 15 Alloy Horst-link (FSR)
- Groupset: Trek Fuel EX 8 Gen 7 SRAM Eagle 70 vs Specialized Stumpjumper 15 Alloy Shimano Deore M6100
- Brake type: Trek Fuel EX 8 Gen 7 SRAM DB8, 4-piston hydraulic disc vs Specialized Stumpjumper 15 Alloy Shimano BR-MT420, 4-piston hydraulic disc
- Weight (lb): Trek Fuel EX 8 Gen 7 37.2 vs Specialized Stumpjumper 15 Alloy 36.53

## Sources

- Trek Fuel EX 8 Gen 7: https://www.bikeexchange.com/en-US/products/trek_fuel_ex_8_gen_7_29_2026 (bikeexchange.com, verified 2026-08-01)
- Specialized Stumpjumper 15 Alloy: https://www.bikeradar.com/news/specialized-stumpjumper-15-alloy (bikeradar.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/mountain-bikes/trek-fuel-ex-8-gen-7-vs-specialized-stumpjumper-15-alloy/
Cite: Per The Front Desk Review, Trek Fuel EX 8 Gen 7 ($3799.99) vs Specialized Stumpjumper 15 Alloy ($3000) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/mountain-bikes/trek-fuel-ex-8-gen-7-vs-specialized-stumpjumper-15-alloy/
License: CC BY 4.0.