Building your dream bike is one of the best parts of riding, and for me, that dream is based on the Specialized Stumpjumper EVO Alloy. I set this rig up to thrive on aggressive trail and enduro riding, with a mullet wheel setup and a dialed parts list built around performance, reliability, and fun while still keeping budget in mind. Here’s a full breakdown of my custom Stumpy EVO build and why each piece made the cut.

Frame & Geometry: Stumpjumper EVO Alloy Mullet

The foundation is the Specialized Stumpjumper EVO Alloy frame—a proven platform with adjustable geometry and internal SWAT storage. This frame can do it all: climb, descend, corner, and launch.

I’ve set mine up mullet-style (29” front / 27.5” rear). This gives me the rollover benefits of a 29er up front for better control in rough terrain, while the smaller rear wheel adds maneuverability and a poppy, playful feel—especially on tighter trails and jumpy lines.

Suspension: RockShox Ultimate Components

Suspension is where things get really fun. I’m running:

  • RockShox Lyrik Ultimate fork with the Charger 2.1 damper for precise control, excellent small bump sensitivity, and just the right amount of stiffness
  • RockShox Super Deluxe Ultimate rear shock, which delivers a smooth ride with great mid-stroke support and ramp-up at the end

The Lyrik/Super Deluxe combo handles everything from fast flow trails to chunky descents, and I’ve tuned the air pressure and rebound for a supportive feel without sacrificing plushness.

Drivetrain: Shimano XT/SLX Mix

For the drivetrain, I’m running a Shimano XT derailleur with an SLX cassette and shifter. This mix gives me the performance and precision of XT where it matters, paired with the durability and cost-effectiveness of SLX components in less critical spots.

It’s reliable, quiet, and shifts smoothly—even under load. And when you’re climbing technical singletrack or powering out of corners, that consistency really matters.

Brakes: Shimano Saint

I didn’t hold back on stopping power. I went with Shimano Saint brakes, and they’ve been flawless. They offer ridiculous power and great modulation, especially when paired with large rotors. Whether I’m hauling down long alpine descents or making split-second corrections, these brakes deliver total control with zero fade.

Wheels & Tires: Mullet for the Win

  • 29” front / 27.5” rear wheel combo
  • Maxxis Assegai up front for all the grip and cornering bite
  • Maxxis Minion DHR II in the rear for braking traction and drive
  • Tubeless setup for reduced weight, better grip, and fewer flats

This combo is confidence-inspiring and fast-rolling. It gives me the best of both worlds—grip and speed—without compromise.

Cockpit & Contact Points: Precision & Comfort

I went all-in on control and comfort with the following components:

  • OneUp Carbon Handlebar – super light with just the right amount of flex for rough descents
  • Deity stem – stiff and clean, keeps the front end planted
  • ODI Elite grips – comfortable, grippy, and perfect for long days on the bike
  • OneUp Alloy pedals – wide, burly, and reliable, with great traction even in muddy conditions

Together, these components give me precision handling and a confidence-inspiring cockpit feel.

Final Thoughts: Built to Rip

This build isn’t about weight weenie points or flashy colors—it’s about creating a ride that I can trust on any terrain. The Specialized Stumpjumper EVO Alloy mullet setup is playful when I want it to be and absolutely planted when I need it most.

From big mountain rides to bike park days and post-work laps, this thing is ready to rip.

Specs at a Glance

ComponentPartFrameSpecialized Stumpjumper EVO AlloyForkRockShox Lyrik UltimateShockRockShox Super Deluxe UltimateDrivetrainShimano XT (shifter, crankset and cassette), SLX (rear derailleur)BrakesShimano SaintWheelsMullet (29" front / 27.5" rear) Ride Fast Carbon Front 29" Wheel and a BTLOS Carbon 27.5 rim with DT 240s hub TiresMaxxis Assegai (F), Minion DHR II (R)HandlebarOneUp CarbonStemDeityGripsODI ElitePedalsOneUp Alloy