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Arktos 29/27.5 170F/150R

29/27.5" // 170mm Front/150MM Rear // Complete Carbon Frame // Fox Factory Front and Rear

The all-new long-travel Arktos 29-27.5 is ready to attack the roughest terrain. Combining 170mm of front travel with 150mm of rear travel, the mixed wheels provide the confidence at speed of a 29er with the handling characteristics and maneuverability of a 27.5-inch bike. The design features dual water-bottle mounts, super-low standover and updated geometry.

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What Size is Best for Me?

With low standover heights, we now have three sizes catered to your individual riding style. Pick the shorter reach and smaller wheelbase model for more maneuverability and quicker handling, or pick a larger size for more stability and a roomier ride.

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Frameset Features

Exclusive Patented Sine Suspension System

The Arktos is a one-of-a-kind, do-it-all suspension bike designed to tackle any type of terrain. The heart of the Arktos is Alchemy’s patented dual-linkage platform called Sine Suspension. Sine provides next-level performance, and allows the bike to tear up climbs yet descend the roughest terrain with ease.

Learn About Sine Suspension

Fully Triangulated Rear Swingarm

Modern trail bikes are now being ridden on World Cup DH-level terrain and the requirements for frame stiffness are increasing every year. Thankfully the Arktos is one of the most laterally stiff bikes ever produced. With a fully-triangulated rear swingarm, oversize suspension pivots and compact linkage, the Arktos by design is made to handle anything you can throw at it.

The Details

They say the devil is in the details, and there’s no doubt we focused on the minutiae with the new Arktos. The bike features internal cable routing, dual-water bottle mounts, direct-mount chain guide, low standover and modern geometry. Each Arktos frame is also convertible to any travel configuration and the two longer-travel models can either run full 29 or a mixed-wheel mullet set up..

What People Are Saying About Alchemy

"As of today, I'm officially a huge fan of Alchemy. The craftsmanship, quality, attention to detail, etc. of their custom bicycle frames seems to just be on another level." -Stephen
"I am a smaller rider, and having the 27.5 in the back really helps me get the bike around tight corners. At the same time, having the larger front wheel give me the feeling like I have the rollover abilities of a 29er. It's really a perfect combination." -Meghan
"Perfect fit and ride, The finish and detail on the frame is beautiful. Far better than I deserve but... worth it." -Doug

Geometry

Arktos 29/27.5 170F/150R Medium Large X-Large
A – Frame Stack 619.5 628 652
B – Frame Reach 452 475 502
C – Head Tube Angle 63.5 63.5 63.5
D – Seat tube angle 75.75 75.75 75.75
E- Effective Top Tube 600 625 652
F – Seattube length 410 445 490
G – Front to Center 784 811 838
H – Chain Stay Length 437 437 437
I – Wheelbase 1222.5 1250 1275
J – Stand over 727 747 757
K – Head Tube Length 100 110 120
L – Bottom Bracket Height 347 347 347
M – Bottom Bracket Drop 26 26 26
Frame Geometry
 

Specs

Arktos 29 170/150 GX Eagle 12 Speed XT 12 Speed X01 Eagle 12 Speed
Price $5,999 $6,499 $6,899
Fork Fox 38 Factory Kashima 170mm Boost 15mm Grip 2 Fox 38 Factory Kashima 170mm Boost 15mm Grip 2 Fox 38 Factory Kashima 170mm Boost 15mm Grip 2
Shock Fox X2 Factory Kashima EVOL LV 3-Position Adjust 230X60 Fox X2 Factory Kashima EVOL LV 3-Position Adjust 230X60 Fox X2 Factory Kashima EVOL LV 3-Position Adjust 230X60
Handlebar Tag Metals T1 Aluminum 35mm Clamp 800mm Wide 20mm Rise Tag Metals T1 Carbon 35mm Clamp 800mm Wide 20mm Rise Tag Metals T1 Carbon 35mm Clamp 800mm Wide 20mm Rise
Stem Tag Metals T1 CNC Aluminum Stem 35mm Clamp 45mm Length Tag Metals T1 CNC Aluminum Stem 35mm Clamp 45mm Length Tag Metals T1 CNC Aluminum Stem 35mm Clamp 45mm Length
Seatpost Fox Factory 175mm Transfer w/ Lever Fox Factory 175mm Transfer w/ Lever Fox Factory 175mm Transfer w/ Lever
Grips DMR Deathgrip Thin DMR Deathgrip Thin DMR Deathgrip Thin
Headset Top Cane Creek 40-Series IS42 Short Cover – Top – Black Cane Creek 40-Series IS42 Short Cover – Top – Black Cane Creek 40-Series IS42 Short Cover – Top – Black
Headset Bottom Cane Creek 40-Series IS52 – Bottom – Black Cane Creek 40-Series IS52 – Bottom – Black Cane Creek 40-Series IS52 – Bottom – Black
Spacer Cane Creek 40-Series 5MM Spacer – Black Cane Creek 40-Series 5MM Spacer – Black Cane Creek 40-Series 5MM Spacer – Black
Saddle Selle Italia X-Base FeC Alloy Selle Italia X-Base FeC Alloy Selle Italia X-Base FeC Alloy
Shifters SRAM GX Eagle Shimano XT M8100 12 SPD SRAM X01 Eagle SL BLK
Rear Derailleur SRAM GX Eagle 12 SPD Shimano XT M8100 12SPD SRAM X01 Eagle BLK
Cassette SRAM GX 1275 Eagle 10-52T Shimano XT M8100 12-Speed 10-51t SRAM XG 1275 EAGLE 10-52T
Cranks SRAM GX EAGLE SB+ DUB 170 BLK 32T Shimano XT FC-M8130-1 170mm 32T SRAM X01 EAGLE SB+ DUB 170 BLK 32T
Bottom Bracket SRAM DUB Threaded Shimano XT Threaded SRAM DUB Threaded
Chain SRAM GX Eagle 12 SPD Shimano XT 12 Speed SRAM GX Eagle 12 Speed
Brakes SRAM Code R Shimano XT M8120 Hydraulic 4 Piston SRAM Code RSC
Rotors SRAM 180mm Rear, 200mm Front 6 bolt Rotors Shimano 180mm Rear, 203 Front 6 bolt Rotors SRAM 180mm Rear, 200mm Front 6 bolt Rotors
Front Wheel Industry Nine 29 Enduro S Hydra – 30.5 mm 6 bolt 15/110mm Industry Nine 29 Enduro S Hydra – 30.5 mm 6 bolt 15/110mm Industry Nine 29 Enduro S Hydra – 30.5 mm 6 bolt 15/110mm
Rear Wheel Industry Nine 27.5 Enduro S Hydra – 30.5 mm 6 bolt 12/157 mm TA SB+ XD Industry Nine 27.5 Enduro S Hydra – 30.5 mm 6 bolt 12/157 mm TA SB+ Microspline Industry Nine 27.5 Enduro S Hydra – 30.5 mm 6 bolt 12/157 mm TA SB+ XD
Tires Maxxis Assegai 29×2.5 DC EXO TR, Maxxis Minion DHR 27.5×2.4 DC EXO TR Maxxis Assegai 29×2.5 DC EXO TR, Maxxis Minion DHR 27.5×2.4 DC EXO TR Maxxis Assegai 29×2.5 DC EXO TR, Maxxis Minion DHR 27.5×2.4 DC EXO TR
 

Pricing and specifications subject to change at any time without notice.

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