Details
Building great recreational-level bikes that ride much like (and look a lot like) their high-end bikes is a passion at Jamis. And no bikes showcase that commitment better than the Helix A1. The Helix chassis emphasizes all-day performance with handling that’s quick and sure without being overly darty. Its suspension fork and 24-speed drivetrain make it trail-ready and quite capable, while powerful hydraulic disc brakes help ensure safety and control wherever you ride, and in all weather. You don’t have to give up comfort for capability, though, and the Helix A1 provides both, offering a women-specific saddle, riser bar, and soft, Kraton grips, all with a heads-up geometry that keeps you riding comfortably all day long.
Specs
Frame | 6061 aluminum main tubes, over-sized seat tube, zero-stack head tube, over-sized stays, replaceable derailleur hanger |
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Fork | SR Suntour XCT 30 HLO 27.5", coil spring, hydraulic speed lock out adjust, external preload adjustor, 30mm stanchions, aluminum lowers, 100mm travel |
Headset | Zero-stack internal cup threadless, 15mm cone spacer |
Rims/Wheels | Alex TD26 27.5" rims, 32H |
Hubs | Alloy 6-bolt disc |
Spokes | 14G nickel-plated |
Tires | CST Patrol, 27.5 x 2.25" |
Crankset | Shimano TY-301 |
Chainrings | 42/34/24 |
Bottom Bracket | Sealed cartridge |
Chain | KMC Z7, 8-speed |
Front Derailleur | TY700 |
Rear Derailleur | Shimano TX800 |
Cassette/Rear Cogs | Shimano HG200, 8-speed, 12-32T |
Shifters | Shimano M310, 3x8-speed |
Handlebars | Jamis XC alloy riser, 31.8 x 20mm rise x 680mm |
Tape/Grips | Kraton |
Stem | Jamis XC alloy threadless, 31.8 x 10° rise x 70mm (14"/16"), 90mm (18") |
Brake Levers | Tektro |
Brakes | Tektro M275 hydraulic disc, 160mm rotors |
Pedals | MTB platform, hi-impact resin |
Saddle | Jamis ATB Sport Women's, SL cover, protective front and rear guards |
Seat Post | Jamis alloy micro-adjust, 31.6 x 350mm (14") 400mm (16"/18") |
* Subject to change without notice.