Alchemy Nine7Five GX Complete

Alchemy Nine7Five GX Complete

The Arktos Nine7Five GX complete features Fox suspension and SRAM GX Eagle 12 speed drivetrain. The Nine7Five features 140mm of rear wheel travel and is ready to attack burley descents. Want to spec the perfect Nine7Five? Check out our Custom Complete Builder!


  • Description
  • Reviews (0)
  • Alchemy Nine7Five Geometry
  • BikeCo ProTunes
  • Pricing, Incentives, Upgrades & Questions


Alchemy Nine7Five GX Complete, 29″ Front 160mm Travel, 27.5″ 140mm Sine Suspension Rear Travel

Check out the Alchemy Nine7Five Custom Complete Builder for a custom build experience.

Thinking about a US made Arktos? Start designing the perfect color layout with our Custom Arktos Visualizer!

Business in the front, Party in the Back

The Alchemy Nine7Five is a dedicated “mullet” 29″ front 27.5″ rear wheel setup. The advantage of a designed miss matched wheel bike is it’s geo isn’t compromised from another existence. Bottom bracket and head tube angles are set for ultimate performance, not modified from a taller front end.

The Nine7Five is a bike designed from the needs of Alchemy EWS rider Cody Kelley. It’s at home in the steeps and chunk. It’s fast around the corners. Nine7Five is a basher. But that’s not the end of it. Shorter riders who are looking for the roll over benefits of a 29″ front wheel are drawn to the Mullet or mis-matched wheels.

Check out some First Thoughts on the Alchemy Nine7Five here.


Sine Suspension:

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.

By comparison the Sine Suspension rides a bit like a VPP, or Virtual Pivot Point, bike. The Arktos is poppy, quick and fun but has a more refined feel particularly early in the travel where it has better small bump compliance and tracking than a typical VPP.



  • Wheel size: 29″ Front, 27.5″ Rear
  • Max tire clearance: 2.5″
  • Super Boost+ 157 mm rear spacing
  • Travel: 140mm / 5.5″ rear, 160mm / 6.2″ Front
  • Shock: Fox Float DPX2
  • Bottom bracket: 73 mm threaded, ISCG05 under BB mount
  • Seat post: 31.6 mm with internal dropper routing
  • Headset: IS42 upper – IS52 lower for tapered steerer
  • Drive train: 1x only
  • Shock Size: 7.875×2.25″
  • Hardware: 10mm x 22mm
  • Chainring Clearance: 38t (need 3mm offset ring for SRAM Eagle)


Alchemy Arktos Nine7Five GX Complete Spec

Fork Fox 36 29 Factory Kashima 160mm Boost 15mm
Shock Fox DPX2 Factory Kashima EVOL LV 3-Position Adjust 7.875×2.25, 10×22 Hardware
Handlebar Race Face Aeffect R 35×780 20mm Rise
Stem Race Face Aeffect R 50mm 0 Degree
Seat Post X-Fusion Manic 150mm 30.9mm with Trigger Remote
Grips Ergon GA 20 Black
Headset Top Cane Creek 40-Series IS42 Short Cover – Top – Black
Headset Bottom Cane Creek 40-Series IS52 – Bottom – Black
Spacer Cane Creek 40-Series 5MM Spacer – Black
Saddle WTB Volt Comp 142×265
Shifter SRAM GX Eagle
Rear Derailleur SRAM GX Eagle
Cassette SRAM GX 1275 Eagle 10-50t
Bottom Bracket SRAM BB DUB BSA MTB73 SB+
Chain SRAM GX Eagle 12 SPD
Brakes Shimano XT M8000 Hydraulic
Rotors Shimano 180mm Center Lock Ice Tech Rotor
Front Wheel Industry Nine ENDURO S HYDRA 29″ 15/110mm
Rear Wheel Industry Nine ENDURO S HYDRA 27.5″ 12/157 mm TA SuperBoost
Tires Maxxis Minion DHF 29×2.5 DC EXO TR, Maxxis Minion DHR 27.5×2.4 DC EXO TR


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Alchemy Nine7Five Geometry & Size Interactive Comparison

Compare reach, stack and wheelbase across the Arktos 29 size range with's interactive builder.

Want to compare the Arktos 29 with other Trail & Enduro 29ers?
Check out our Interactive Geo Comparison Here



Alchemy Arktos Carbon Frame Geometry


Alchemy Arktos Frame Geometry

Dimensions in CM

  Small Medium Large X-Large
Seat Tube Length 410 450 483 518
Effective Top Tube 579 609 629 664
Head Tube Length 100 110 125 140
Head Tube Angle 65 65 65 65
Frame Stack 620 630 644 658
Frame Reach 417 442 450 481
Seat Tube Angle 74.5 74.5 74.5 74.5
Chain Stay Length 438.5 438.5 438.5 438.5
Bottom Bracket Drop 28 28 28 28
Est. BB Height 335 335 335 335
 Wheelbase 1160  1178  1207 1244

*based on 160mm / 44mm offset fork


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

Riding Discipline
XCTrailEnduroBig Mtn / ParkDH

*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.

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