Arktos 29
Featuring Alchemy’s exclusive Sine full-suspension system
The Arktos features famed designer David Earle’s patented dual-linkage suspension platform called “Sine”. The name “Sine” derives from the shock rate, which resembles a sine wave when graphed. The design creates suspension that is regressive through the first part of the travel to absorb small bumps and provide climbing traction, is progressive in the middle to avoid wallowing on big hits or in hard, fast corners, and is regressive again in the last 15 percent of the stroke so the bike can use all of its rear-wheel travel. It’s efficient, responsive, and provides downhill capabilities unparalleled in today’s crop of modern trail bikes.
It will truly transform your ride.
Bike Builder
Frameset Features
Exclusive Patented Sine Suspension System
The Arktos is a one-of-a-kind, do-it-all full-suspension bike designed to climb and descend with the same aplomb. The Arktos features a patented dual-linkage platform called the Sine Suspension, which was designed by suspension guru David Earle. The Sine name is derived from the way the shock rate, when graphed, resembles a sine wave. With Sine, there is regression through the first part of the travel to absorb small bumps and provide climbing traction, progression in the middle of the stroke to avoid wallowing on big hits or in hard, fast corners, and then slight regression again at end stroke to enable full use of rear wheel travel. Sine is also designed to minimize chainstay growth to improve pedaling efficiency and keep the suspension active under braking.
Fully Triangulated Rear Swingarm
Modern trail bikes today are being ridden on terrain that only a DH bike would have tackled a few years ago. As a result, the requirements for frame stiffness are increasing every year. Luckily if you are riding an Arktos, you are riding one of the laterally stiffest bikes ever produced, and one of the big reasons for this is the full triangulated rear swingarm. The Arktos by design is made to handle all you can throw at it.
The Details
They say the devil is in the details, and there’s not doubt we focused on the minutia with the Arktos 29. The bike features details like internal cable routing and a direct mount chain guide, as well as every bike features Fox Factory suspension both front and rear. The rear shock has been specially tuned for Alchemy to provide the best in pedaling efficiency and downhill performance and all of the bikes are using stiff and light Fox 36 forks.
Geometry
| S | M | L | XL | |
|---|---|---|---|---|
| 160mm Fork | 44mm Offset Fork | ||||
| Seat Tube Length | 410 | 450 | 483 | 518 |
| Effective Top Tube | 580 | 610 | 630 | 665 |
| Head Tube Length | 100 | 110 | 125 | 140 |
| Head Tube Angle | 65.5 | 65.5 | 65.5 | 65.5 |
| Frame Stack | 620 | 630 | 644 | 658 |
| Frame Reach | 418 | 444 | 452 | 483 |
| Seat Tube Angle | 75 | 75 | 75 | 75 |
| Chain Stay Length | 438.5 | 438.5 | 438.5 | 438.5 |
| Bottom Bracket Drop | 34 | 34 | 34 | 34 |
| Bottom Bracket Height | 343 | 343 | 343 | 343 |
| Wheelbase | 1167 | 1185 | 1211 | 1248 |
Pricing and specifications subject to change at any time without notice.
| Height | Pant Inseam (inches) | Size |
|---|---|---|
| 5 ft. 1 in. – 5 ft. 4 in. | 30 | Small |
| 5 ft. 5 in. – 5 ft. 8 in. | 32 | Medium |
| 5 ft. 9 in. – 5 ft. 11 in. | 34 | large |
| ≥ 6 ft. | 36 | Xlarge |
| S | 5’1 – 5’5″ | ||||
| M | 5’5″ – 5’9″ | ||||
| L | 5’9″ – 6’1″ | ||||
| XL | 6’1″ – 6’5″ | ||||
Specs
| Price | $5,199 |
| Fork | Fox 36 29 Factory Kashima 160mm Boost 15mm Grip 2 |
| 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 31.6mm 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 Race 142×165 |
| Shifters | SRAM GX Eagle |
| Rear Derailleur | SRAM GX Eagle |
| Cassette | SRAM GX 1275 Eagle 10-50T |
| Cranks | SRAM GX EAGLE FC X01 EAGLE SB+ DUB 175 BLK 32 |
| 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 | DT Swiss M 1700 SPLINE 29 – 30 mm CL 15/110mm |
| Rear Wheel | DT Swiss M 1700 SPLINE 29 – 30 mm CL 12/157 mm TA Boost Plus |
| Tires | Maxxis Minion DHF 29×2.5 DC EXO TR, Maxxis Minion DHR 29×2.4 DC EXO TR |
| Price | $4,899 |
| Fork | Fox 36 Factory Kashima 160mm Boost 15mm Grip 2 |
| Shock | Fox DPX2 Factory Kashima EVOL LV 3-Position Adjust 7.875×2.25, 10×22 Hardware |
| Handlebar | Race Face Turbine R 780mm, 20mm, 35mm |
| Stem | Race Face Turbine R 50mm, 35mm, 0 degree |
| Seat Post | Fox Factory 125mm Transfer w/ Lever |
| 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 Race 142×165 |
| Shifters | Shimano XT SL‑M8000‑Rapidfire PlusShimano XT SL‑M8000‑Rapidfire Plus |
| Rear Derailleur | Shimano XT 11-speed Rear RD-M8000 GS Shadow+ |
| Cassette | Shimano XT M8000 11-Speed 11-46t |
| Cranks | Shimano XT FC-M8000-1 32 T 175mm |
| Bottom Bracket | Shimano XT Threaded |
| Chain | Shimano XT 11 Speed |
| Brakes | Shimano XT M8000 Hydraulic |
| Rotors | Shimano 180mm Center Lock Ice Tech Rotor |
| Front Wheel | DT Swiss M 1700 SPLINE 29 – 30 mm CL 15/110mm |
| Rear Wheel | DT Swiss M 1700 SPLINE 29 – 30 mm CL 12/157 mm TA Boost Plus Shimano Driver |
| Tires | Maxxis Minion DHF 29×2.5 DC EXO TR, Maxxis Minion DHR 29×2.4 DC EXO TR |
| Price | $6,699 |
| Fork | Fox 36 29 Factory Kashima 160mm Boost 15mm Grip 2 |
| Shock | Fox DPX2 Factory Kashima EVOL LV 3-Position Adjust 7.875×2.25, 10×22 Hardware |
| Handlebar | Race Face Turbine R 780mm, 20mm, 35mm |
| Stem | Race Face Turbine R 50mm, 35mm, 0 degree |
| Seat Post | Fox Factory 125mm Transfer w/ Lever |
| 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 Race 142×165 |
| Shifters | SRAM X01 Eagle SL X01 EAGLE TRIGGER BLK |
| Rear Derailleur | SRAM X01 Eagle RD X01 EAGLE BLK |
| Cassette | SRAM XG 1275 EAGLE 10-50T |
| Cranks | SRAM X01 EAGLE FC X01 EAGLE SB+ DUB 175 BLK 32 |
| Bottom Bracket | SRAM DUB BSA MTB73 SB+ |
| Chain | SRAM GX Eagle 12 Speed |
| Brakes | Shimano XT M8000 Hydraulic |
| Rotors | SShimano 180mm Center Lock Ice Tech Rotor |
| Front Wheel | DT Swiss M 1700 SPLINE 29 – 30 mm CL 15/110mm |
| Rear Wheel | DT Swiss M 1700 SPLINE 29 – 30 mm CL 12/157 mm TA Boost Plus |
| Tires | Maxxis Minion DHF 29×2.5 DC EXO TR, Maxxis Minion DHR 29×2.4 DC EXO TR |
| Price | $5,699 |
| Fork | Fox 36 Factory Kashima 160mm Boost 15mm Grip 2 |
| Shock | Fox DPX2 Factory Kashima EVOL LV 3-Position Adjust 7.875×2.25, 10×22 Hardware |
| Handlebar | Race Face Turbine R 780mm, 20mm, 35mm |
| Stem | Race Face Turbine R 50mm, 35mm, 0 degree |
| Seat Post | Fox Factory 125mm Transfer w/ Lever |
| 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 Race 142×165 |
| Shifters | Shimano XT SL‑M8100‑Rapidfire Plus 12 Speed |
| Rear Derailleur | Shimano XT 12-speed Rear RD-M8100 GS Shadow+ |
| Cassette | Shimano XT M8100 12-Speed 10-51t |
| Cranks | Shimano XT FC-M8100-1 32 T 175mm |
| Bottom Bracket | Shimano XT Threaded |
| Chain | Shimano XT 12 Speed |
| Brakes | Shimano XT M8100 Hydraulic |
| Rotors | Shimano 180mm Center Lock Ice Tech Rotor |
| Front Wheel | DT Swiss M 1700 SPLINE 29 – 30 mm CL 15/110mm |
| Rear Wheel | DT Swiss M 1700 SPLINE 29 – 30 mm CL 12/157 mm TA Boost Plus |
| Tires | Maxxis Minion DHF 29×2.5 DC EXO TR, Maxxis Minion DHR 29×2.4 DC EXO TR |
| Price | $9,499 |
| Fork | Fox 36 Factory Kashima 160mm Boost 15mm Grip 2 |
| Shock | Fox DPX2 Factory Kashima EVOL LV 3-Position Adjust 7.875×2.25, 10×22 Hardware |
| Handlebar | ENVE M6 780mm 7.5 Degree 31.8mm |
| Stem | ENVE M6 55mm 31.8mm |
| Seat Post | Fox Factory 125mm Transfer w/ Lever |
| 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 Race 142×165 |
| Shifters | Shimano XTR M9100 12 Speed |
| Rear Derailleur | Shimano XTR M9120, XTR SGS, 12-SPEED |
| Cassette | Shimano XTR M9100 12-Speed 11-51t |
| Cranks | Shimano XTR FC-M9100-1 32 T 175mm |
| Bottom Bracket | Shimano XTR Threaded |
| Chain | Shimano XTR 12 Speed |
| Brakes | Shimano XTR M9120 Trail Hydraulic |
| Rotors | Shimano XTR M900 180mm Center Lock Ice Tech Rotor |
| Front Wheel | ENVE M630 15/110mm |
| Rear Wheel | ENVE M630 12/157 mm TA DT 240 Superboost Shimano Driver |
| Tires | Maxxis Minion DHF 29×2.5 DC EXO TR, Maxxis Minion DHR 29×2.4 DC EXO TR |