Jamis HELIX 2018
2018 Mountain
Estimate price |
449$
Weight | 14.74 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
Category -
Frame Aluminum -
Wheels 27.5" -
Travel Front 100mm -
Fork SunTour XCT
-
Groupset Tourney, Shimano -
Suspension Hardtail -
Brakes Mechanical Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
6061 aluminum main tubes, over-sized seat tube, zero-stack head tube, over-sized stays, replaceable derailleur hanger
Suspension Fork
SR Suntour XCT 27.5", coil spring, external preload adjustor, 28mm stanchions, aluminum lowers, 100mm travel
Drivetrain
Rear Derailleur
Shimano TY300
Front Derailleur
TY500
Shift Levers
Shimano EF41, 3x7-speed
Cassette
Shimano TZ31, 7-speed, 14-34T
Bottom Bracket
Sealed cartridge
Chain
KMC Z51, 7-speed
Pedals
MTB platform, hi-impact resin
Wheels
Rims
Alex TD26 27.5" rims, 32H, alloy 6-bolt disc hubs, 14G nickel-plated spokes
Tires
CST Patrol, 27.5 x 2.25”
Brakes
Brakes
Tektro M280 mechanical disc, 160mm rotors and Shimano levers
Cockpit
Stem
Jamis XC alloy threadless, 31.8 x 10? rise x 70mm (14”/16"), 90mm (18")
Handlebar
Jamis XC riser, 25.4 x 20mm rise x 620mm
Grips
Kraton
Headset
Zero-stack internal cup threadless, 15mm cone spacer
Seat
Saddle
Jamis MTB Sport Women's, SL cover, protective front and rear guards
Seatpost
Jamis alloy micro-adjust, 31.6 x 350mm (14") 400mm (16"/18")
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 14" | 16" | 18" |
|---|---|---|---|
| Bottom Bracket Height | 309 mm | 309 mm | 309 mm |
| Front Center | 598 mm | 619 mm | 639 mm |
| Top Tube Length | 547 mm | 567 mm | 587 mm |
| Seat Tube Angle | 72.5 ° | 72.5 ° | 72.5 ° |
| Seat Tube Length | 356 mm | 406 mm | 457 mm |
| Head Tube Angle | 70 ° | 70 ° | 70 ° |
| Head Tube Length | 105 mm | 110 mm | 120 mm |
| Chainstay Length | 442 mm | 442 mm | 442 mm |
| Wheelbase | 1036 mm | 1057 mm | 1077 mm |
| Bottom Bracket Drop | 46 mm | 46 mm | 46 mm |
| Standover Height | 675 mm | 711 mm | 738 mm |
| Wheels | 27" | 27" | 27" |
About this model
HELIX is part of the Jamis Helix model. Jamis released 11 bikes variations of this model so far.
Safety
When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.
Average price for Crosscountry bikes
If you want to purchase a solid Crosscountry bike, it is important to know that the average cost is 1905$. However, even though the average price of a Crosscountry bike is lower, you might still be able to get a top-quality bike. As a general rule of thumb, you should always read reviews about the bike and its components before buying it to ensure you don’t pay too much.
When Jamis released this model in 2018, its price was 449$. Comparing this to the average Crosscountry bike price, we see that the price is 324.28% lower.
Crosscountry bikes average weight
Crosscountry bikes have an average weight of 12.4 kg (27.34 lbs). It is a good advantage to have a lighter bike than the average. However, a heavier bike is more efficient on descents.
Jamis HELIX it’s weighing 14.74 kg (32.5 lbs). At this weight, is much heavier than average. In other words, this model is 18.87% heavier than the average Crosscountry bike.
Overview of components
Fork
The fork installed on this bike is the SunTour XCT model. The travel on this model is 100mm. Bike forks are great for shock absorption and provide you with a smooth ride. In short, make sure you choose one with a decent fork when you purchase your dream bike.
Fork material
The fork on this bike is made out of aluminum, which doesn’t add too much extra weight to the bike. However, it is not so stiff as steel or carbon forks are.
Wheels
The wheels on HELIX are the 27.5″ aluminum type. 27.5″ wheels are a mixture between 29″ wheels and 26″ wheels. However, these wheels have a slower top speed if you compare them to 29″ wheels.
Brakes
For your safety, it is important to have quality breaks on your bike. Jamis HELIX has Mechanical Disc brakes installed. They deliver good performance and cost less than hydraulic disk brakes. However, they don’t have the stopping power of hydraulic brakes.