Building a 2025 Specialized Stumpjumper 15 Alloy | Complete Trail Bike Build

In this video, I build up a 2025 Specialized Stumpjumper 15 Alloy from a bare frameset into a complete trail bike. The goal was to create a capable and reliable build without going completely overboard on cost. This build features a Cascade Components 156mm mullet link, FOX Float Performance GENIE shock, FOX 36 Factory fork, Shimano XT Di2 wireless drivetrain, BTLOS carbon wheels, and a mix of components that offer great performance and value. Timestamps: 0:00 Intro 1:16 Parts List 4:04 Build Start & Cascade Mullet Link Installation 5:36 Rear Brake Hose Routing & Caliper Install 6:44 Fork Steerer Cutting & Installation 8:05 Front Brake Lever & Caliper Install 8:50 Bleeding the Rear Brake 9:06 Crankset, Bottom Bracket & Chain Guide Install 10:20 Rear Wheel Install & Brake Adjustment 10:37 XT Derailleur, Chain & Pedal Install 11:26 Rear Derailleur Adjustment 12:19 Front Wheel Install & Brake Adjustment 12:35 Dropper Post & Saddle Install 13:56 Weighing the Bike 14:09 Summary & Closing Thoughts Final Weight: 33 lb 12 oz (15.3 kg) Parts Used: Cascade Components 156mm Mullet Link — https://cascadecomponents.bike/produc... FOX Float Performance GENIE Shock FOX 36 Factory Fork Shimano XT Di2 Drivetrain — https://amzn.to/3R2klbC Shimano XT 12-Speed Chain — https://amzn.to/3QGyoDG BTLOS Carbon Wheels — https://btlos.com OneUp Chain Guide/Bash Guard — https://amzn.to/3R2k1JW OneUp Aluminum Pedals — https://amzn.to/4gotqpt OneUp V3 Dropper Post — https://amzn.to/3QWmG7X PRO Stealth Curved Saddle — https://amzn.to/4w4olr6 ODI Reflex Grips — https://amzn.to/4bdweSO What do you think about the mullet link setup on an alloy frame — worth it? Let me know in the comments. If you enjoyed the build, be sure to like and subscribe — ride review coming soon! #Stumpjumper15 #ShimanoXT #MTB #Specialized #MountainBike #BikeBuild #XTDi2 #FoxSuspension #CascadeComponents #TrailBike