Alchemy Arktos Frame Kit Custom Builder, USA made

Alchemy Arktos Frame Kit Custom Builder, USA made

Looking for the ultimate build? Use our custom modules to spec your bike with the best performing products on the market. Add the modules to your cart for a total build out and go blast your favorite trails.


Out of stock

  • Description
  • Reviews (0)
  • Alchemy Arktos Geometry & Features
  • BikeCo Pro Tunes
  • Pricing, Incentives, Upgrades & Questions
  • Arktos Image Gallery


Oops – This page has been rebuilt into our Alchemy Arktos 27.5 Custom Complete Builder! Follow the link to spec your ultimate Alchemy Arktos 27.5.

Alchemy Arktos Frame Kit Builder, USA built

BikeCo’s Alchemy Arktos Frame Kit gives riders access to pick the best suspension and adjustable seatpost options for aggressive, enduro style riding. Use the Alchemy Artktos Frame Kit builder in conjunction with our other custom complete modules to spec your ultimate MTB build.

ALCHEMY ARKTOS: Sine Suspension 150mm travel, 27.5″, Carbon Frame

The Alchemy Arktos is a bike that has flown under the radar earlier in it’s existence. Well, without a doubt 2018 will put Alchemy’s 27.5″ bike on the map. With team riders Anneke Beerten and Cody Kelley contesting the entire EWS circuit you can be sure you will hear more about these bikes.

The Arktos is a fun bike across a wide variety of trails due to it’s effective suspension system and geometry. Efficient while climbing, quick to put power down accelerating out of corners, and certainly competent in the steeps. At BikeCo we test a lot of bikes and the Arktos has certainly checked boxes with everyone here – it’s been a blast in a variety of terrain for a variety of riding styles. We are stoked to have the Alchemy Arktos available for our clients – so much that we brought in a full size run of demo bikes.

Semi-Custom and Custom Colorway Options

Alchemy offers a version of the Sine Suspension Arktos frame manufactured here in the United States – that’s right, a carbon chassis built domestically…

The US Alchemy Arktos frames are built to order with a six to eight week lead time and offer semi-custom and custom colorway options! Check out a recent blog about the design process on a custom Alchemy Arktos!

You’re already on the cutting edge with your new Alchemy, take it to the next level with a unique, personalized color choice.

Both custom color options as well as full custom designs are available, at an additional price.

Need help with the design? BikeCo has resources to help you proof your bike prior to production in order to ensure your new dream bike is perfect for you. Contact our staff for more details and to develop a finalized price on your concept.

In the mean time – check out a gallery of some custom colorways we’ve worked on with our clients so far below!



Ready to get the ball rolling on your custom USA made frame? Reach out to our staff and let’s get you dialed in with colors, artistic concept and a price. (Exact pricing is based on artwork requirements and will be discussed prior to production)

Compare the stock Arktos builds for inspiration


Alchemy Arktos Frame Kit Options:

Rear Shock:

Fox Performance DPX2: Sharing design influence from the more aggressive X2 the DPX2 is designed as the ultimate trail shock. Three modes – Open, Medium & Firm – give riders options to personalize performance across a variety of terrain. The DPX2 tune and feel is a notable improvement compared to the previous Float X. It also offers better heat capacity over single chamber shocks.



BikeCo works with the Fox lineup for many reasons – in particular, they work awesome and are incredibly reliable for our clients. Since the Alchemy runs a 160mm Enduro fork let’s define some of the options available in the Fox Float 36 lineup.

There are four levels of Fox forks available, excluding OEM variations.
Rhythm & Performance (Grip Damper)
Performance Elite (HSC/LSC or Fit 4 Damper)
Factory (HSC/LSC or Fit 4 damper)

In this kit we offer the Performance Elite and Factory options.

Performance Elite has the same dampers as the Factory offerings without the Kashima coating (Performance has black stanchions).
Factory forks have the familiar Kashima coating on the stanchions for maximum performance and longevity.

Damper Details:

HSC/LSC (RC2) Dampers offer external controls for high and low speed compression to fine tune your fork’s performance. Combine these controls with air pressure, volume spacing and rebound to setup your bike for any trail condition. Riding bigger, more aggressive, faster trails? Undeniably, this is your ideal damper.

Fit 4 Dampers feature a 3 mode compression switch – Open, Medium , Firm – and adjustable compression control in the Open setting. Fit 4 forks feature a more “trail” feel than their RC2 cousins while offering a quick “lockout” for riders who desire the firmest offering to climb the steepest / longest trails.


Looking for even more performance from your suspension?

At this point it’s time to Pro Tune your Fox fork and rear shock for the most personalized setup available. Flip to the Pro Tune tab for more info and to fill out your bio for our suspension techs.



This season the Fox Transfer post (Performance = black, Factory = Kashima coat) paired to the Wolf Tooth ReMote has been the absolute go-to setup. Great reliability, a variety of sizing options, incredible ergonomics in other words, it’s an easy choice.


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Alchemy Arktos Carbon Frame Geometry


Alchemy Arktos Frame Geometry

Dimensions in CM

  Small Medium Large X-Large
Seat Tube Length 420 455 483 518
Effective Top Tube 585 600 615 642
Head Tube Length 100 110 115 130
Head Tube Angle 66 66 66 66
Frame Stack 589 599 604 614
Frame Reach 401 415 431 448
Seat Tube Angle 73.5 73.5 73.5 73.5
Chain Stay Length 438 438 438 438
Bottom Bracket Drop 10 10 10 10
Est. BB Height 346 346 346 346



The Arktos features a dual-linkage platform called “Sine Suspension” that Alchemy licensed exclusively from David Earle. The name “Sine” comes from the shock rate, which resembles a sine wave when graphed. It’s regressive through the first part of the travel to absorb small bumps and provide climbing traction. In the middle of the stroke, its progressive to avoid wallowing on big hits or in hard, fast corners. Then it’s slightly regressive again in the last 15 percent of the stroke to enable the bike to use all 6 inches of its rear-wheel travel. With this bike you could talk technologies and physics all day long, but none of that stuff really matters the moment that you feel the efficiency, responsiveness and control the Arktos gives you on any terrain. It will truly transform what you thought you could do on the mountain.



  • Wheel size: 650b/27.5"
  • Max tire clearance: 2.4"
  • Boost 148 mm rear spacing
  • Travel: 150mm / 6"
  • Fox Float X shock
  • Bottom bracket: 73 mm threaded
  • Seat post: 31.6 mm
  • Headset: IS41 upper – IS52 lower
  • Drive train: 1x

Maximize your suspension’s performance with BikeCo Pro Tunes

BikeCo offers proprietary Pro Tune services on the majority of Fox forks and rear shocks.

Fox Suspension is the pinnacle of performance, reliability, and longevity in our industry. Stock Fox suspension comes out of the box with a fairly aggressive tune – which is terrific for powerful, strong, aggressive riders with high ground speeds. Sounds like their World Cup DH and Enduro riders, right?

Pro Tune services calibrate the incredible performance of Fox suspension into a narrower band personalized to your riding specifics.

Utilizing a combination of proprietary lube oils, improved upper to lower fork fit, shim stack configuration, updated oil flow, unmatched bleed quality, and a few other trade secrets BikeCo Pro Tunes improve tracking, small bump compliance, minimize brake dive, run cooler (equating to more predictable performance from top to bottom of your descent), operates comfortably in a wide range of temperature (we test from freezing to 100 degrees), improves oil circulation, extends service intervals and more.

The most important advantage of Pro Tune suspension? Whether you are new to the sport or an experienced pro: suspension that works will let you ride more confidently. You will ride faster and have more fun with BikeCo Pro Tune Suspension.

To ensure that your suspension is dialed in our staff will review your riding experience, aspirations, ground speeds, size (height and weight) as well as specific chassis. BikeCo stands behind our Pro Tune service with a 30 day retune service if you feel that your particular riding requires a shift in tuning. BikeCo also offers discounted disposition retunes as your skillset progress if required.

After the Pro Tune your suspension only requires standard levels of maintenance in the future. To maintain the best performance BikeCo recommends sending the suspension in (we use proprietary lube oils, have specific bleed techniques, etc) although standard Fox oils can be used. Standard lubes will compromise some of the finite tune but with the other Pro Tune modifications a standard lube shock will still out perform stock.

Ready to go? Fill out the online form below and we will get you dialed in.
Have a few more questions? Give us a call or send us a message and our expert staff is happy to work with you!

Pro Tune Form

*required fields

Pricing, Incentives, Upgrades & Questions – BikeCo has you covered

Chat with our expert sales staff for the best market incentives, performance hop ups, setup tips and more!

Chris and Landon lead the BikeCo sales team and are always up to date with the best deals for clients at all levels and across all riding styles. Years of experience on trail with a variety of the best frames, suspension, wheels, tires and accessories means the staff at BikeCo is able to help you define which components will best compliment your riding (conversely we can help steer you away from problematic gear as well).

Reach out via email - Chris is available & Landon, chat, call - 949-470-1099 or 888-697-6717 or use this quick online form to start the process with the leaders in sport to pro level MTB – the experts from The Bike Company. We look forward to working with you before, during and after you bike purchase.

Contact Us

Enjoy some of our favorite shots of the Alchemy Arktos in this photo gallery!