Specialized
Specialized Stumpjumper 15 Alloy
$3000Cheaper
Released 2025
Best Mountain Bikes · head-to-head
Specialized Stumpjumper 15 Alloy vs Norco Sight A3 MX
A sourced, side-by-side comparison. Specialized Stumpjumper 15 Alloy is cheaper at $3000. Every spec and price links to its source.
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Norco
Norco Sight A3 MX
$3499
Released 2025
Which is better: the Specialized Stumpjumper 15 Alloy or Norco Sight A3 MX?
On the specs we track, they're closely matched. The Specialized Stumpjumper 15 Alloy is the cheaper at $3000.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Specialized Stumpjumper 15 Alloy | Norco Sight A3 MX |
|---|---|---|
| US price | $3000 | $3499 |
| Brand | Specialized | Norco |
| Released | 2025 | 2025 |
| Frame material | M5 Alloy | Aluminum |
| Wheel size | 29" (MX 27.5" rear compatible) | 29"/27.5" mullet (MX) |
| Fork travel (mm) | 150 | 160 |
| Rear travel (mm) | 145 | 150 |
| Suspension type | Horst-link (FSR) | High Pivot Horst-link |
| Drivetrain speeds | 12 | 12 |
| Groupset | Shimano Deore M6100 | Shimano Deore |
| Brake type | Shimano BR-MT420, 4-piston hydraulic disc | Shimano Deore MT520, 4-piston, 203/180mm rotors |
| Weight (lb) | 36.53 | — |
Sources — Specialized Stumpjumper 15 Alloy: bikeradar.com (verified 2026-08-01). Norco Sight A3 MX: bikeexchange.com (verified 2026-08-01).
What's the difference between the Specialized Stumpjumper 15 Alloy and Norco Sight A3 MX?
Where the two actually differ on the specs we track (7 of 9). Matching specs are omitted.
- Frame material: Specialized Stumpjumper 15 Alloy M5 Alloy vs Norco Sight A3 MX Aluminum
- Wheel size: Specialized Stumpjumper 15 Alloy 29" (MX 27.5" rear compatible) vs Norco Sight A3 MX 29"/27.5" mullet (MX)
- Fork travel (mm): Specialized Stumpjumper 15 Alloy 150 vs Norco Sight A3 MX 160
- Rear travel (mm): Specialized Stumpjumper 15 Alloy 145 vs Norco Sight A3 MX 150
- Suspension type: Specialized Stumpjumper 15 Alloy Horst-link (FSR) vs Norco Sight A3 MX High Pivot Horst-link
- Groupset: Specialized Stumpjumper 15 Alloy Shimano Deore M6100 vs Norco Sight A3 MX Shimano Deore
- Brake type: Specialized Stumpjumper 15 Alloy Shimano BR-MT420, 4-piston hydraulic disc vs Norco Sight A3 MX Shimano Deore MT520, 4-piston, 203/180mm rotors