The Specialized Stumpjumper 15 EVO Alloy Frameset is built for riders who demand uncompromising trail performance, ultimate adjustability, and downhill-ready capability in a durable alloy package. Featuring GENIE shock technology, advanced geometry, and Specialized’s legendary SWAT storage system, this frameset is the perfect foundation for building your dream full-suspension trail mountain bike.
- All-New M5 Alloy Frame – Lightweight, durable, and engineered for aggressive trail riding.
- GENIE Shock Technology – Patent-pending air spring delivers coil-like grip, progressive bottom-out resistance, and tunable mid-stroke/end-stroke support.
- 145mm Rear Travel with FOX FLOAT X Performance Shock – Ride Dynamics tuned with 2-position open/firm damper for maximum traction and control.
- Six-Way Geometry Adjustment – Fine-tune head angle and bottom bracket height to match your riding style and terrain.
- Mixed or 29” Wheel Compatible – Choose your setup with aftermarket shock links, without changing geometry.
- SWAT Door Integration – Innovative downtube storage for tools, spares, and ride essentials.
- Lifetime Pivot Bearing Replacement – No-questions-asked coverage for original owners.
- Perfect for: Riders looking to build a custom trail, enduro, or all-mountain MTB with coil-like suspension feel, industry-leading adjustability, and Specialized reliability.
The Stumpjumper 15 EVO Alloy frameset redefines what a trail bike frame can be. With 57% more traction than traditional air shocks, 39% fewer bottom-outs, and 16% better bump force management, the GENIE air spring makes it ride like a longer-travel enduro bike while retaining the agility and efficiency of a trail machine.
Designed with progressive geometry, this frameset balances stability in rough terrain with nimble handling in technical singletrack. Whether you’re chasing podiums, shredding bike park laps, or building a versatile all-mountain rig, the Stumpjumper 15 EVO Alloy Frameset is your ticket to the ultimate trail experience.