HELIX
27.5 SPORT HARDTAIL | Versatile by Design
Manufacturer’s Suggested Retail Price excludes shipping costs, dealer assembly/prep, taxes or import duties.
FRAME MATERIALS
Helix frames utilize lightweight and strong 6061 series aluminum, featuring over-sized & tapered tubing for increased frame stiffness.
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.
PEDALING PLATFORM
The aluminum frame of 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.
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 Helix models are cleverly reinforced to resist disc brake torque and prevent spokes & nipples from shearing.
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 Helix frame offers a replaceable derailleur hanger designed to yield in a crash before the frame does.
READY FOR THE TRAIL
Building great recreational-level bikes that ride much like our high-end bikes is a passion at Jamis. No bikes showcase our commitment to do just that better than these. The Helix chassis emphasizes all-day performance with quick, but not overly twitchy handling attributes. Make no mistake though, if you want to throw down they’re more than able to keep up.
HELIX
MSRP: $699.95
- 6061 aluminum frame
- SR Suntour XCE 28 27.5", coil, external preload, 100mm
- Double wall AL disc 27.5", Joytec hubs, nickel-plated spokes
- MicroShift Acolyte 8-speed shifter & derailleur
- Samox 32T crankset
- Shimano MT200 hydraulic disc brakes, 160mm rotors
- Jamis XC alloy handlebar & stem
- Jamis ATB Sport Saddle
Purchase online now and pickup at your local bike shop!
Specifications are subject to change without notice. All bike and frame weights are based off pre-production painted frames. Weights may vary in final production.
| HELIX® | HELIX |
|---|---|
| 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 |
| Headset | Zero-stack internal cup, 8mm cone spacer |
| Wheels | MTB double wall alloy disc 27.5″ rims, Joytec alloy disc hubs, nickel-plated spokes |
| Tires | Kenda Regio, 27.5 x 2.2” |
| Derailleurs | microSHIFT Acolyte M5185M 8-speed |
| Shift levers | microSHIFT Acolyte M6185, 1×8-speed |
| Chain | KMC Z8, 8-speed |
| Cassette | microSHIFT H081, 8-speed, 11-42T |
| Crankset | Samox AF26, 32T |
| BB Set | Sealed cartridge |
| Pedals | MTB platform, hi-impact resin |
| Brakeset | Shimano MT200 hydraulic disc, Shimano RT26 160mm rotors |
| Handlebar | Jamis XC alloy riser, 31.8 x 20mm rise x 680mm |
| Stem | Jamis XC alloy threadless, 31.8 x 10˚ rise x 75mm (14”/16″), 90mm (18″) |
| Grips | Kraton |
| Seat Post | Jamis alloy micro-adjust, 31.6 x 350mm (14″) 400mm (16″/18″) |
| Saddle | Jamis ATB Sport |
| Sizes | 14”, 16”, 18” |
| Color | Mint or Pomodoro |
| Weight | 31.25 lbs |
| MODEL | SIZE | TT EFFECTIVE | HT ANGLE | ST ANGLE | CHAINSTAY | WHEELBASE | BB DROP | HEADTUBE | STANDOVER |
|---|---|---|---|---|---|---|---|---|---|
| Helix | 14″ | 21.2 / 540 | 70° | 72.5° | 17.1 / 435 | 41 / 1029 | 1.8 / 46 | 4.1 / 105 | 26.3 / 668 |
| Helix | 16″ | 22.1 / 560 | 70° | 72.5° | 17.1 / 435 | 41 / 1050 | 1.8 / 46 | 4.3 / 110 | 27.7 / 704 |
| Helix | 18″ | 22.9 / 580 | 70° | 72.5° | 17.1 / 435 | 42 / 1070 | 1.8 / 46 | 4.7 / 120 | 28.9 / 731 |
