• 2017

    2017 JAMIS Helix

    2017 Helix
    image 2017  JAMIS Helix
    2017 Helix logo
    $594.00
    $594.00
    CDN
    Size
    14 Inch
    16 Inch
    18 Inch
    stock
    yes

    FRAME MATERIALS

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

    PEDALING PLATFORM

    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 and Helix frame offers a replaceable derailleur hanger designed to yield in a crash before the frame does.

    FULL SHIMANO SHIFTING SYSTEM

    Fully integrated shifting systems offer the most precise and reliable performance. That’s why our Trail X and Helix models all offer Shimano shifters, Shimano front and rear derailleurs and Shimano cassettes or freewheels.

    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 Expert, Comp and Sport is cleverly reinforced to resist disc brake torque and prevent spokes & nipples from shearing.

     

    Frame 6061 aluminum main tubes, over-sized seat tube, zero-stack head tube, over-sized stays, replaceable derailleur hanger
    Fork RST Gila 27.5", coil spring, external preload adjustor, 28mm stanchions, aluminum lowers, 100mm travel
    Headset Zero-stack internal cup threadless, 15mm cone spacer
    Wheels Alex ACE-17 double-wall alloy rims, 36H, heavy-duty ATB hubs with QR, stainless spokes
    Tires CST Patrol, 27.5 x 2.25”
    Derailleurs Shimano TX-35 rear and TX50 front
    Shift levers Shimano EF41, 3x7-speed
    Chain KMC Z51, 7-speed
    Cassette Shimano TZ31, 7-speed, 14-34T
    Crankset Forged alloy crank, 42/34/24T, 170mm (14"/16") 175mm (18")
    BB Set Sealed cartridge
    Pedals ATB platform, hi-impact resin
    Brakeset Alloy linear pull type with Shimano levers
    Handlebar Jamis XC riser, 25.4 x 20mm rise x 620mm
    Stem Jamis XC alloy threadless, 25.4 x 15º rise x 75mm (14”), 75mm (16"), 90mm (18")
    Grips Kraton
    Seat Post Jamis alloy micro-adjust, 31.6 x 350mm (14") 400mm (16"/18")
    Saddle Jamis ATB Sport Women's, SL cover, protective front and rear guards
    Sizes 14”, 16”, 18”
    Color Aspen Sky or Ultraviolet
    Weight 30.25 lbs

     

    SIZE TOP EFFECTIVE HEAD ANGLE SEAT ANGLE CHAIN STAY WHEEL BASE BB DROP HEAD TUBE STANDOVER
    14 21.2 / 540 70˚ 72.5˚ 17.1 / 435 40.5 / 1029 1.8 / 46 4.1 / 105 26.3 / 668
    16 22.1 / 560 70˚ 72.5˚ 17.1 / 435 41.3 / 1050 1.8 / 46 4.3 / 110 27.7 / 704
    18 22.9 / 580 70˚ 72.5˚ 17.1 / 435 42.1 / 1070 1.8 / 46 4.7 / 120 28.9 / 731

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