WHY CYCLES Big Iron X01 EAGLE KIT

The bike that won Outside Magazine Best Fat Bike of 2020 just got even better! Built around 27.5” fat bike wheels with clearance for up to 27.5×4.5” or 26×5” tires, this modern titanium steed will be your trusty companion on any snow or soft-surface endeavor. The crew at Why goes way back to the early days of fat biking in Alaska, and the Big Iron is the culmination of years of fat biking experience combined with modern design features, and an engineering oversight to optimize Why’s titanium tubing to the rigorous riding the Big Iron is made for. The V2 sees some updates to slightly more progressive geometry and a new UDH hanger to future-proof this bike even more.

SADA X01 EAGLE KIT

• Frame – Why Cycles Big Iron V2
• Fork – ENVE Carbon Fat Fork 150x15mm (*upgrade available)
• Headset – CaneCreek 40-series IS42/IS52
• Wheels –  HED Wheel Big Alloy Half Deal 27.5 150mm Front & HED Wheel Big Alloy Half Deal 27.5 197mm XD Rear (*upgrade available)
• Tubes – Tubeless set up included
• Tires – Terrene Cake Eater Lite 27.5 x 4.5″ 120tpi
• Bar –  RaceFace Next R 35x780mm 20mm rise (*upgrade available)
• Stem – RaceFace Turbine R 35x40mm
• Post – RaceFace Turbine R 31.6x125mm, 150mm or 175mm
• Saddle – WTB Volt CroMo – Black
• Shifters – SRAM X01 Eagle
• Brakes – SRAM G2 RSC
• Rotors – Avid Centerline 160mm
• Rear Derailleur – SRAM X01 Eagle
• Chain – SRAM X01 Eagle
• Cassette – SRAM X01 Eagle 10-52
• Crankset – Truvativ Stylo Fat Bike Carbon DUB 5″ 170mm 30t
• Bottom Bracket – SRAM Threaded DUB 100mm BSA Standard
• Grips – Lizard Skins Charger Evo – Black

BIG IRON FRAME SPECS

• Integrated standard head assembly 42 mm upper bowl, 52 mm lower bowl
• Standard centre axis with BSA 100 mm thread
• Axle spacing increase 12 mm x 197 mm
• Foot 12mm fixed axle, 1.75 thread pitch, compatible with adjustable feed and belt drive
• Bottle holders - bottle holders on seat tube, top down tube, down tube. Third bottle holder on down tube for attaching accessories.
• Handles - all standard handles on rack and fender
• Seatpost - 31.6 mm
• Saddle clamp - 34.9 mm
• Brake - 180 mm max rear with adapter, standard for direct mounting
• Ground clearance - Max tire size 27.5 x 4.5″, 26 x 5.0″ or 29 x 3.0″ Big-Iron-Geo-Chart
• Pedals - without pedals
• Sizes S / M / L / XL
• Frame Warranty -
• Lifetime Warranty (Details Here) 

** Specifications are subject to change without notice**

BIG IRON GEOMETRY

The Big Iron uses truly modern mountain bike geometry adapted for use with huge 27.5 fat tires. The reach is longer than most other fat bikes, allowing the same body position with wider bars and a short track. The handling benefits of this setup are magnified when riding on snow with a sometimes unstable front tire at low pressure. The chainstays are adjustable from 445mm to 460mm, so you can really dial in the rear shock of this bike based on your chosen tire size. The lower seat tube and curved top tube allow for excellent standover height and allow you to use a longer than normal seat tube and still retain a nice big front triangle if you choose to use a frame bag to store your gear.

  

BECAUSE TITANIUM IS MAGICAL

We make our bikes from the best possible materials for the terrain we ride. We use the highest quality grade 9 3/2.5 titanium for our frame tubes and 6/4 titanium for the head tube, center compound shell and machined bits all around the frame. Wonder material has so many outstanding ride quality attributes: 43% lighter than steel, higher strength-to-weight ratio than aluminum, significantly more resistant to impact damage than carbon, and the best vibration damping properties of the three materials. We think you'll agree that we've achieved our goal of creating titanium frames with a modern twist by engineering internal cable routing, integrated headsets and threaded bottom brackets. For riders who want a high-end, comfortable and fast bike built to last a lifetime, we believe a properly engineered titanium frame is the best choice and a lifetime warranty.