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Arktos 29 ST Frame

Featuring Alchemy’s exclusive Sine full-suspension system

The Arktos 29 ST (for short travel) is the younger brother of the Arktos 29, and like younger siblings, it’s shorter, quicker and more playful than its elders. Where the Arktos 29 was designed to crush fast, open, super techy EWS tracks, the Arktos 29 ST is capable of hitting the same bone-tingling descents, but adds a little fun in the mix. It turns quicker and changes directions faster on those tight switchbacks, but still has that slack geometry to keep it stable at speeds. It’s the everyday bike for hitting every track.

 

Frameset Features

// Exclusive Patented Sine Suspension System

The backbone of the Arktos 29 ST is the Sine Suspension System. Sine is what makes the bike climb like a mountain goat and descend like a DH rig. The Sine name derives 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. In the middle of the travel, there is progression to avoid wallowing on big hits or in hard, fast corners. At the end, there is slight regression again to enable full use of rear wheel travel.

EXPLORE

The Stiffness You Need… Delivered

The backbone of the Arktos 29 ST is the Sine Suspension System. Sine is what makes the bike climb like a mountain goat and descend like a DH rig. The Sine name derives 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. In the middle of the travel, there is progression to avoid wallowing on big hits or in hard, fast corners. At the end, there is slight regression again to enable full use of rear wheel travel.

// A Short Travel Trail Slayer

It’s quick, it’s playful, it’s capable…it’s everything you need in a modern-geometry, short-travel 29er. Oh, and what a trail slayer in stock form. Fitted with Fox Factory suspension in all complete models, the spec package is ready to march out of the garage and handle anything you can throw at it.

Geometry


  S M L XL
140mm Fork | 44mm Offset Fork
Seat Tube Length 410 450 483 518
Effective Top Tube 578 608 627 663
Head Tube Length 100 110 125 140
Head Tube Angle 66.1 66.1 66.1 66.1
Frame Stack 619 628 642 655
Frame Reach 421 447 454 485
Seat Tube Angle 75.5 75.5 75.5 75.5
Chain Stay Length 436 436 436 436
Bottom Bracket Drop 41 41 41 41
Bottom Bracket Height 336 336 336 336
Wheelbase 1155 1175 1199 1236

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

Frame Geometry
 
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
Arktos 29 Frame Sizing
S 5’1 – 5’5″
M 5’5″ – 5’9″
L 5’9″ – 6’1″
XL 6’1″ – 6’5″

Specs

Frameset Only.

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