Jamis Helix A2 MTB Vanilla Mint
Building great recreational-level bikes that ride much like our hi-end bikes is a passion at Jamis. No bikes showcase our commitment to do just that better than these. The Trail X chassis emphasizes all-day performance and the handlings quick and sure without being overly darty. But make no mistake, if you want to throw down, they’re more than able to keep up.
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.
Top Tube Cable Routing
Running the cables up under the top tube keeps cables and housing out of the muck for more precise and reliable shifting performance.
ZERO STACK Internal Headset
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.
Dual Water Bottle Mounts
Most of our Trail X sizes offer two water bottle mounts located inside the main frame. This provides excellent hydration capacity in an easily accessible position.
Replaceable Derailleur Hanger
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.
Alex TD26 Disc-Specific Rims
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.
Med (18"), Sml (16"), XS (14")
Frame 6061 aluminum main tubes, over-sized seat tube, zero-stack head tube, over-sized stays, replaceable derailleur hanger
Fork SR Suntour XCE 28 DS 27.5”, coil spring, external preload adjustor, 28mm stanchions, aluminum lowers, 100mm travel
Handlebar Jamis XC alloy riser, 31.8 x 20mm rise x 740mm
Stem Jamis XC alloy threadless, 31.8 x 3˚ rise x 60mm
Seat Post Jamis alloy micro-adjust, 31.6mm
Saddle Jamis ATB Sport
Shifters Shimano EF505, 16 speed
Rear Derailleur Shimano Tourney
Front Derailleur Shimano Altus
Brakes Levers Shimano MT200 hydraulic disc
Brakes Shimano MT200 hydraulic disc, Shimano RT26 160mm rotors
Cassette Shimano HG31, 8-speed, 11-32T
Chain KMC Z8.3, 8 speed
Crankset Forged Alloy, 36/22T
Bottom Bracket Sealed cartridge
Rims Alex TD26, 27.5
Hubs Alloy, disc, 32H
Spokes Nickel plated, 14g
Tyres CST Patrol, 2.25”
Due to Covid 19, the above bicycle specifications may vary without notice. We will strive to advertise specifications accurately.