Why Cycles
Why Cycles Big Iron V2 - NX Eagle/Manitou Mastodon Comp (Built Bike)
Why Cycles Big Iron V2 - NX Eagle/Manitou Mastodon Comp (Built Bike)
The Big Iron is built around the new standard 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.
| Build Kit | NX Eagle |
|---|---|
| Fork | Manitou Mastodon Comp 120mm |
| Wheelset | Sunringle Mulefut 80, 27.5" |
| Tires | Terrene Yippie Ki Yay 27.5 x 4.3 |
| Shifter | NX Eagle |
| Rear Derailleur | NX Eagle |
| Crank | NX Eagle Alloy Dub 30t |
| Bottom Bracket | SRAM Dub |
| Cassette | NX Eagle 10-52t |
| Brakeset | SRAM Level TLM |
| Rotors | Avid G2 180/160 |
| Chain | NX Eagle |
| Saddle | Spank Saddle |
| Handlebar | Race Face Aeffect R |
| Seatpost | Whiskey Aluminum |
| Grips | Race Face Grips |
| Stem | Race Face Aeffect |
| Headset | Tangeseiki Zero Stack Tapered |
| Pedals | Not Included |
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.
Named after the the famous Marty Robbins song, the Big Iron is designed to be a tool to get the job done. Whether its a short weekend jaunt on the local groomed single track or an epic 1100 mile journey across Alaska, the modern geometry, stiff-yet-supple titanium frame, and lifetime warranty make this a bike you’ll be proud to take anywhere that requires big tires.
DETAILS THROUGHOUT
Named after the the famous Marty Robbins song, the Big Iron is designed to be a tool to get the job done. Whether its a short weekend jaunt on the local groomed single track or an epic 1100 mile journey across Alaska, the modern geometry, stiff-yet-supple titanium frame, and lifetime warranty make this a bike you’ll be proud to take anywhere that requires big tires.
BECAUSE TITANIUM IS MAGIC
Why Cycles makes their bikes from the best materials possible for a wide variety of terrain. They use the highest quality Grade 9 3/2.5 titanium for their frames’ tubing, and 6/4 titanium for the head tube, bottom bracket shell, and machined bits all over the frame.
The wonder material has so many excellent ride quality attributes: 43% lighter than steel, higher strength-weight ratio than aluminum, significantly more resistant to crash-damage than carbon, and the best vibration damping properties of all three listed here.
We think you’ll agree that they achieved their goal of creating titanium frames with a modern twist by engineering guided internal cable routing, stealth dropper post routing, integrated headsets, and threaded bottom brackets. For riders who want a high-end, comfortable, fast bike built to last a lifetime, we believe a properly made titanium frame is the best option.
Bike Sizing Guide
General Sizing Guide
| Your Height | Frame Size (inches) | Labeled Size |
|---|---|---|
| 4’10” – 5’1” | 13" – 14" | XS |
| 5’2” – 5’5” | 15" – 16" | S |
| 5’6” – 5’9” | 17" – 18" | M |
| 5’10” – 6’1” | 19" – 20" | L |
| 6’2” – 6’4” | 21" – 22" | XL |
| 6’5” and up | 23" – 24"+ | XXL |
FBC Purchasing Guide
FBC Bike Purchasing Guide
We offer four distinct pathways to purchasing your new bicycle: In-Stock Builds, Backorder Builds, Pre-Order Builds and our Custom Program. Each option is designed to meet different needs, timelines, and levels of personalization.
In-Stock Completes
Our In-Stock Builds are mostly assembled bicycles with carefully selected components and specifications, ready for immediate purchase and shipment.
Since these models are already in our inventory, they can ship out right away, typically arriving within approximately one week. This option is ideal for customers who want a high-quality bike without any delay.
Backorder Completes
If the configuration you are seeking is not currently available in our warehouse, you may place a backorder directly through our online catalogue.
Backorder builds are in stock at our supplier's warehouse. Typical lead time is 3–5 business days to our Ontario warehouse, plus the number of days you selected for your checkout shipping option.
Pre-Order Completes
Pre-Order Builds allow you to reserve a bicycle before it has been produced or received from our suppliers. This option is perfect for upcoming models or newly released configurations.
By pre-ordering, you secure your bike in advance and can choose from the available specifications and color options. Lead times vary depending on production and delivery schedules, but Pre-Orders guarantee you won’t miss out on the latest builds.
Custom Program
For those seeking the highest level of personalization, our Custom Program offers the opportunity to design a bicycle tailored precisely to your preferences and riding style.
While the build process may require additional time, this program provides unparalleled flexibility. Customers may select their preferred Frame, Drivetrain Kit, Cockpit Kit, Wheelset, Tires, Color Options, and a wide range of additional components, ensuring the final build reflects both performance requirements and aesthetic choices.
Shipping Rates
We ship on Mondays, Wednesdays and Fridays. If we receive your order by noon on these days we can often get your order out same day or it will go out the next shipping day with the method you have selected. We will always try to ship orders out as quickly as possible.
Shipping Rates Table - Link
Domestic orders are shipped Purolator, UPS or Loomis depending on the item and your selected service and when your order ships you will receive tracking details via email address provided. If you require an alternate shipping option or for Remote Area orders please contact us prior to placing your order and we will provide a shipping quote.
We use Purolator or UPS as our primary Express shipping services.
Free freight is not offered for Complete Bike purchases or to locations that have a Remote Destination surcharge fee.
Customers assume all shipping risks for package damage or theft of their order we recommend for high value shipments for customers to insure shipment through their own credit are card or to reach directly to use for a customer insurance quote.
SUCCESSFUL INSURANCE CLAIM OUTCOMES CANNOT BE GURANTEED.
Returns
Our policy is you may return an item(s) which are unused and in original packaging up to 15 days after receiving them.
This does not include Clearance items which are final sale. Please make your return request through email (eh@fatbikes.ca) noting the item (s) you would like to return.
Those items must be in their original packaging and in the very condition you received them.
Please note that we have a ‘Restocking Fee’ of 15% for any and all products returned if you had received free shipping with your order. If your original shipping and handling was a higher rate than 15% of the purchase that will be the charge instead.
So please insure proper compatibility before proceeding with an order. You are responsible for the full cost of shipping your return back to us.
There may be certain items that are Non-Refundable and cannot be returned such as various wearables/underwear
All Clearance items are Final Sale. Weekly Deals + Specials offer the same return and exchange policy as regular items.
Key Features
Learn more about this awesome bike!
Fork Options
The Why Cycles Big Iron V2 offers several front fork options to suit different riding preferences: ENVE Carbon Fork: A high-quality carbon fork known for its lightweight and responsive characteristics, enhancing the bike's agility. Manitou Mastodon Suspension Fork: A suspension fork providing additional comfort and control on rough terrains, ideal for riders seeking a more cushioned ride.
Frame Construction
Frame Material: Constructed from Grade 9 3/2.5 titanium tubing with CNC-machined 6/4 titanium components, offering an optimal balance of stiffness and compliance.
Universal Derailleur Hanger (UDH)
Equipped with SRAM's UDH for enhanced drivetrain compatibility and easier replacement.
Wheel and Tire Compatibility
Accommodates multiple wheel sizes, including 27.5" x 4.5", 26" x 5.0", and 29" x 3.0" tires, providing flexibility for different riding conditions.
Why Cycles
DETAILS THROUGHOUT
Named after the the famous Marty Robbins song, the Big Iron is designed to be a tool to get the job done. Whether its a short weekend jaunt on the local groomed single track or an epic 1100 mile journey across Alaska, the modern geometry, stiff-yet-supple titanium frame, and lifetime warranty make this a bike you’ll be proud to take anywhere that requires big tires.
Build Kit Specs
| Component | Specification |
|---|---|
| Fork | Enve Carbon |
| Headset | Cane Creek |
| Bottom Bracket | Sram Dub 100mm |
| Crankset | Sram GX Eagle Fat 5 |
| Stem | Raceface Aeffect |
| Handlebar | Diety 35mm |
| Seatpost | Raceface Ride |
| Saddle | WTB Volt |
| Grips | Raceface |
| Shifter | Sram GX Eagle |
| Cable Housing | Jagwire Shift |
| Derailleur | Sram GX Eagle |
| Chain | Sram GX Eagle |
| Cassette | Sram GX Eagle |
| Brakes | Sram G2R |
| Rotors | SRAM Centerline 160mmF/180mmR |
| Wheelset | Corvus Big SU 27.5/XD Driver |
| Tires | Terrene Cake Eater 27.5×4.5 (Sealant/Tubes Sold Separately) |
| Bottom Bracket | SRAM DUB BSA |
| Grips | Lizard Skins Charger Evo Grip Black |
| Seat Collar | Revel 34.9mm Dia |
| **Specifications subject to change without notice** | |
| Component | Specification |
|---|---|
| Fork | Manitou Mastadon Pro |
| Headset | Cane Creek |
| Bottom Bracket | Sram Dub 100mm |
| Crankset | Sram GX Eagle Fat 5 |
| Stem | PNW |
| Handlebar | PNW Range 35mm |
| Seatpost | PNW Loam w/ Range Lever |
| Saddle | WTB Volt |
| Grips | Raceface |
| Shifter | Sram GX Eagle |
| Cable Housing | Jagwire Shift |
| Derailleur | Sram GX Eagle |
| Chain | Sram GX Eagle |
| Cassette | Sram GX Eagle |
| Brakes | Sram G2R |
| Rotors | SRAM Centerline 160mmF/180mmR |
| Wheelset | Corvus Big SU 27.5/XD Driver |
| Tires | Terrene Cake Eater 27.5x4.5 or 45N Dillinger 5 (Sealant/Tubes Sold Separately) |
| **Specifications subject to change without notice** | |
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