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
🤑 FINAL SALE! Save $2,500 off all clearance ARKTOS bikes!
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✅ Arrives ready-to-ride. Just add pedals!
🇺🇸 Ships from Golden, CO. Ships to Contiguous USA for FREE
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+ Size Guide
MEDIUM
LARGE
XL
5’5″ – 5’10” 5’9″ – 6’2″ 5’11’ – 6’5″ When to Size Down: Seeking more control when cornering & maneuverability
When to Size Up: Seeking more descending stability -
+ Geo Chart
flip chip – low settingMedium Large XL 29” 27.5″ 29” 27.5″ 29” 27.5″ A – Frame Stack (mm) 613.25 613.25 622 622 630.1 630.1 B – Frame Reach (mm) 460 460 483 483 508.5 508.5 C – Head Tube Angle 64.75 ° 64.25 ° 64.75 ° 64.25 ° 64.75 ° 64.25 ° D – Seat tube angle 75.75 ° 75.5 ° 75.75 ° 75.5 ° 75.75 ° 75.5 ° E – Effective Top (mm) 600 600 625 625 652 652 F – Seattube length (mm) 410 410 445 445 490 490 G – Front to Center (mm) 777 777 803 803 833 833 H – Chain Stay Length (mm) 437 437 437 437 437 437 I – Wheelbase (mm) 1216 1216 1242 1242 1271.5 1271.5 J – Stand over (mm) 727 719 747 739 757 749 K – Head Tube Length (mm) 100 100 110 110 120 120 L – Bottom Bracket Height (mm) 341 341 341 341 341 341 M – Bottom Bracket Drop (mm) 32 32 32 32 32 32 Flip Chip in high setting adds 0.75º to head tube and seat tube angles
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+ Specs
Sram GX Shimano XT Sram X01 Fork Fox 36 29 Factory Kashima 150mm Boost 15mm Grip 2 Fox 36 29 Factory Kashima 150mm Boost 15mm Grip 2 Fox 36 29 Factory Kashima 150mm Boost 15mm Grip 2 Shock Fox Float X Factory Kashima EVOL LV 3-Position Adjust 210x55mm Fox Float X Factory Kashima EVOL LV 3-Position Adjust 210x55mm Fox Float X Factory Kashima EVOL LV 3-Position Adjust 210x55mm 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 35mm Clamp 45mm Length TAG Metals T1 CNC Aluminum 35mm Clamp 45mm Length TAG Metals T1 CNC Aluminum 35mm Clamp 45mm Length Seat Post Fox Factory Transfer 175mm w/ Lever Fox Factory Transfer 175mm w/ Lever Fox Factory Transfer 175mm 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 – Top – Black Cane Creek 40-Series IS52 – Top – Black Cane Creek 40-Series IS52 – Top – Black Spacer Cane Creek 40-Series 5mm (3) Black Cane Creek 40-Series 5mm (3) Black Cane Creek 40-Series 5mm (3) 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 Speed Sram X01 Eagle Rear Derailleur Sram GX Eagle 12 Speed Shimano XT M8100 12 Speed Sram X01 Eagle 12 Speed Cassette Sram XG-1275 Eagle 10-52t Shimano XT M8100 12 Speed 10-51t Sram XG-1275 Eagle 10-52t Cranks Sram GX Eagle SB+ DUB 170mm BLK 32t Shimano XT M8130-1 170mm 32t Sram X01 Eagle SB+ DUB 170mm BLK 32t Bottom Bracket Sram DUB BSA Threaded Shimano XT BSA Threaded Sram DUB BSA Threaded Chain Sram GX Eagle 12 Speed Shimano XT 12 Speed Sram GX Eagle 12 Speed Brakes Sram G2 R Shimano XT M8120 Hydraulic 4 Pot Sram G2 RSC Rotors Sram 6-Bolt 180mm F/R Shimano 6-Bolt 180mm F/R Sram 6-Bolt 180mm F/R Front Wheel Industry Nine 29 Enduro-S Hydra 30.5mm 6-Bolt 15/110mm Industry Nine 29 Enduro-S Hydra 30.5mm 6-Bolt 15/110mm Industry Nine 29 Enduro-S Hydra 30.5mm 6-Bolt 15/110mm Rear Wheel Industry Nine 29 Enduro-S Hydra 30.5mm 6-Bolt 12/157mm SB+ TA XD Industry Nine 29 Enduro-S Hydra 30.5mm 6-Bolt 12/157mm SB+ TA Micros Industry Nine 29 Enduro-S Hydra 30.5mm 6-Bolt 12/157mm SB+ TA Micros Tires Maxxis Assegai 29×2.5 DC EXO TR, Maxxis Minion DHR 29×2.4 DC EXO T Maxxis Assegai 29×2.5 DC EXO TR, Maxxis Minion DHR 29×2.4 DC EXO T Maxxis Assegai 29×2.5 DC EXO TR, Maxxis Minion DHR 29×2.4 DC EXO T
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.
The all-around fast and playful trail bike.
Travel Guide
130F/120R
You have as much (more?) fun powering uphill as you do ripping down. Our alchemists have blended the best of both for your ideal bike: the Arktos 120.
150F/135R
Whether it’s North Shore gnar, Southwest slickrock, Northeast mud and roots, or your own hometown hills, the Arktos 135 is always ready to play, and the bigger and bumpier the playing field, the happier you’ll both be!
170F/150R
Like to get ROWDY when you ride? Is it all about high-speed thrills? Is bigger always better? If you answered “yes” to any of these, the Arktos 150 is definitely the bike for you.
Media Reviews
Bike Details
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 ALCHEMY FLIP CHIP
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.
ALCHEMY PREMIUM CARBON
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.
