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Jamis helix A1 - 2021

Jamis helix A1
  • Color: Ano black
  • Color: Slate
$679.95
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This item is not permitted to be shipped, however it can be purchased online and picked up at your convenience.

Details

Building great recreational-level bikes that ride much like (and look a lot like) our high-end bikes is a passion at Jamis. And no bikes showcase our commitment to do just that better than these. The Helix chassis emphasizes all-day performance and the handling’s quick and sure without being overly darty. But make no mistake, if you want to throw down, they are more than able to keep up with 27.5” wheels, precise shifting drivetrains and incredibly powerful disc brakes.

Lightweight and strong 6061 series aluminum tubing, featuring over-sized & tapered tubing for increased frame stiffness.

The aluminum frame of the Trail X and Helix is beefed up to include a larger 34.9mm seat tube, which allows us to spec an over-sized 31.6mm seat post. The larger diameter post flexes less, providing a firmer pedaling platform.

Running the cables up under the top tube keeps cables and housing out of the muck for more precise and reliable shifting performance.

A Zero Stack internal headset places both the cups and bearings inside the head tube instead of outside. This reduces the total stack height (including the head tube), which is beneficial on larger wheeled bikes. The larger diameter head tube also provides a larger weld interface at the critical head/top/down tube junction.

Because it’s much easier and much less expensive to replace a derailleur hanger than it is to repair or replace a frame, every Trail X frame offers a replaceable derailleur hanger designed to yield in a crash before the frame does.

Disc hubs twist during braking. This twisting increases “pull” load on the nipples in the spoke bed. The Alex TD26 spoke bed on the rims specified on all Trail X models are cleverly reinforced to resist disc brake torque and prevent spokes & nipples from shearing.

Part Numbers

Option MPN Store SKU
Ano black / 14" 03-3274BK 79091
Ano black / 16" 03-3276BK 79092
Ano black / 18" 03-3278BK 79093
Slate / 14" 03-3275BL 79094
Slate / 16" 03-3277BL 79095
Slate / 18" 03-3279BL 79096