Specialized Stumpjumper 15 Alloy Frameset

Specialized Stumpjumper 15 Alloy Frameset Overview

The Specialized Stumpjumper 15 Alloy Frameset is a full suspension mountain bike frameset built with an M5 alloy chassis and rear-end. It uses 145mm of rear travel with a FOX FLOAT Performance rear shock featuring Specialized GENIE Shock Tech and Ride Dynamics Trail Tune. The frame also includes SWAT Door integration, internal cable routing, sealed cartridge bearing pivots, SRAM UDH compatibility, a threaded bottom bracket, and 12x148mm dropouts.

This frameset is designed around Trail Geometry with head tube angle adjustment and six geometry settings. It supports a 29” front and rear wheel setup, with a mixed wheel option using aftermarket shock links. The Satin Obsidian finish gives the alloy frame a clean, dark appearance while keeping the focus on adjustability, integrated storage, and the GENIE rear shock system.

Key Features of Specialized Stumpjumper 15 Alloy Frameset

• M5 alloy construction: The chassis and rear-end use M5 alloy for a full suspension mountain bike frame platform.
• 145mm rear travel: The frame is built around 145mm of rear suspension travel.
• GENIE Shock Tech: The FOX FLOAT Performance rear shock uses Specialized GENIE Shock Tech with Ride Dynamics Trail Tune.
• Shock adjustment: The rear shock includes a 2-position lever with LSR adjustment.
• Adjustable geometry: Head tube angle adjustment and six geometry settings allow the frame setup to be fine-tuned.
• Wheel setup options: The frame supports 29” front and rear wheels or a mixed wheel setup with aftermarket shock links.
• SWAT storage: Internal downtube storage is integrated into the frame for carrying small ride essentials.
• Modern frame standards: The frame includes 12x148mm dropouts, SRAM UDH compatibility, sealed cartridge bearing pivots, internal cable routing, and a threaded BB.

Frame Use

This frameset is made for a full suspension mountain bike build. Its M5 alloy chassis, 145mm rear travel, FOX FLOAT Performance GENIE rear shock, adjustable Trail Geometry, and internal SWAT downtube storage support a trail-focused frame setup.

Why Choose This Frameset

Choose this frameset if you want a Specialized Stumpjumper 15 Alloy platform with M5 alloy construction, 145mm rear travel, and integrated frame features. The FOX FLOAT Performance rear shock with GENIE Shock Tech, head tube angle adjustment, 12x148mm dropouts, SRAM UDH compatibility, threaded bottom bracket, internal cable routing, sealed cartridge bearing pivots, and SWAT internal downtube storage make it a detailed foundation for a mountain bike frame build. The frame comes in Satin Obsidian with a weight of 4.31 kg for size S4 and includes a lifetime warranty for the original owner.