Search our shop

ARKTOS | 140

ARKTOS | 140
ARKTOS | 140

No matter where you ride, the 140 can rip. The tried-and-true trail setup that ascends and descends with equal ease. Do a little of everything? The 140 is for you.

ARKTOS | 140

Color: Camel / Black
Camel / Black
Pine Green / Sunray Gold
Frame Size: XL
Components: Shimano XT
Shimano XT
SRAM X01 Eagle
SRAM X0 Transmission

5 items left

🤑 FINAL SALE! Save $2,500 off all clearance ARKTOS bikes!

🚚 Due to volume of orders from this sale, most bikes are shipping in 2-3 weeks.

✅ Arrives ready-to-ride. Just add pedals!

🇺🇸 Ships from Golden, CO. Ships to Contiguous USA for FREE


Upgrades and Extras

  • ARKTOS | 140

    Arktos Conversion Kit

    View Product
  • ARKTOS | 140

    RideWrap Your Bike - Installed by RideWrap in Golden, CO

    the perfect way to protect your paint! (adds 1-2 weeks to delivery time)
    View Product
  • ARKTOS | 140

    Occam Apex Tube Strap

    Bring your stuff along!
    View Product
  • ARKTOS | 140

    Lycos Custom Paint

    An alchemist will reach out to you to plan your paint! Note: for more intricate paintjobs, more payment may be required.
    View Product
  • ARKTOS | 140

    Alchemy Water Bottle

    View Product

Sale Bikes not eligible for other discounts.

Why the Arktos 140?

The 140 is the trail breed of our MTB platform. The true "all-around" bike with a Fox Factory 36 (150mm) fork and 140mm of travel in the rear, this thing can climb, descend, and play with ease.

The more you throw at this bike, the more you'll be impressed with yourself! Crush your PRs, let it rip downhill, and feel the confidence of the perfect bike for you.

The Arktos 140 utilizes its modern geo and patented Sine Suspension to keep the pedaling smooth and efficient. Despite all its pedaling efficiency, there's 150/140mm of Fox Factory top-of-the-line suspension to help you cruise along while sending the big stuff.

One Arktos to RIDE Them All:

Mullet Option:
Arktos 140 and 150 models are also available in a 'mullet' setup, with a 29" front wheel and 27.5" rear which is gaining traction quickly in MTB, and has been used for years in motocross. The larger front hoop flows over big hits, while the smaller rear wheel provides quicker acceleration.

Conversion Kits:Quickly transform your 140 into a 125 or 150 (and back again) with Alchemy’s conversion kits: Get two (or three) bikes in one – for a fraction of the cost of buying a second bike – and always have the ideal rig for your immediate riding plans. Kits include corresponding shock, fork, and any necessary links.

ARKTOS | 140

The all-around fast and playful trail bike.

ARKTOS | 140



ARKTOS | 140

Exclusive SINE Suspension System

The ARKTOS features the Sine Suspension System Alchemy’s patented dual-linkage platform and latest evolution of an anti-squat full suspension system.

Designed with David Earle after the Sine wave, the Sine Suspension provides next-level performance, and allows the bike to tear up climbs yet descend the roughest terrain with ease. We truly believe it is the best suspension system out there. 


The ARKTOS features a flip chip modification that now offers the ability to transform the ARKTOS from a capable, playful down-country bike with a steeper, more maneuverable geometry to a wickedly fast enduro machine.

‘Flipping the Chip’ changes the head tube and seat tube angle by +/- ¾ of a degree, which in turn changes the ride characteristics of your bike.

ARKTOS | 140


ARKTOS | 140


We have spent over a decade and countless hours perfecting our carbon layups. We engineer our frames to be stronger, lighter, and reliable. Our team of fabricators ensures our carbon bike frames are designed to be integrated with our suspension systems providing better kinematics compared to other mountain bikes. Whether it is our 5+ of NAHBs award winning carbon layups or our lifetime warranty on frames, you can rest assured your Alchemy carbon frame is built to stand the test of time. The Arktos is one of the most laterally stiff bikes ever produced. With a fully-triangulated rear swingarm, oversized suspension pivots, and compact linkage, the ARKTOS by design is made to handle anything you can throw at it. Designed and prototyped in Colorado, this bike was built to handle the rugged terrain of the Rockies.