Arktos 27.5 LE Frame
Featuring Alchemy’s exclusive Sine full-suspension system
Celebrating 10 years of building the highest performance, most beautifully crafted bikes in Denver Colorado, Alchemy Bicycles introduces the limited-edition Arktos 27.5LE colorway. Featuring Alchemy’s patented Sine Suspension system, the bike Singletrack Magazine called “the Strava KOM killer” is now available in a limited edition sonic gray pearl with four different complete build options. Choose from the GX Eagle build or go all out with the XTR-ENVE kit, we are sure of one thing: you are going to love the way the Arktos 27.5LE rides.
// 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 27.5. 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.
|170mm Fork | 39mm Offset Fork|
|Seat Tube Length||420||455||483||518|
|Effective Top Tube||585||600||615||642|
|Head Tube Length||100||110||115||130|
|Head Tube Angle||65.5||65.5||65.5||65.5|
|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|
|Bottom Bracket Height||346||346||346||346|
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″|