Jamis HELIX A1 2020
Bike details
Key information split into simple groups.
Bike summary
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Category
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Frame Aluminum
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Wheels 27.5"
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Travel Front 100mm
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Fork SunTour XCT
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Groupset Tourney, Altus
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Suspension Hardtail
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Drivetrain 3 × 8
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Brakes Hydraulic Disc
Parts list
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 30 HLO 27.5”, coil spring, hydraulic speed lock out adjust, external preload adjustor, 30mm stanchions, aluminum lowers, 100mm travel
Drivetrain
Rear Derailleur
Shimano TX800
Front Derailleur
TY700
Shift Levers
Shimano M310, 3x8-speed
Cassette
Shimano HG200, 8-speed, 12-32T
Crank
Shimano TY-301, 42/34/24T
Bottom Bracket
Sealed cartridge
Chain
KMC Z7, 8-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 M275 hydraulic disc, 160mm rotors
Cockpit
Stem
Jamis XC alloy threadless, 31.8 x 10? rise x 70mm (15/17”), 90mm (19”/21”)
Handlebar
Jamis XC alloy riser, 31.8 x 20mm rise x 720mm
Grips
Kraton
Headset
Zero-stack internal cup threadless, 15mm cone spacer
Seat
Saddle
Jamis ATB Sport, SL cover, protective front and rear guards
Seatpost
Jamis alloy micro-adjust, 31.6 x 350mm (15”) 400mm (17”-21”)
Fit data
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" |
Model Overview
HELIX A1 belongs to the Jamis Helix model. 11 bikes variations carry this model name so far. Take a sneak peek at all Jamis Helix bikes models from 2020, by clicking here.
Model range prices
Jamis HELIX A2 2020 is the most affordable bike of this model and has a price of 499$. On the other hand, Jamis HELIX A1 2020, is the most expensive and costs 599$.
Safety
When cycling always take safety very seriously. Wear a helmet, obey the traffic rules and wear hi-vis clothes. In short, take care of yourself so others can take care of you.
Average price for Crosscountry bikes
If you want an acceptable Crosscountry bike you should know that the average price is 1905$. However, even though the average price of a Crosscountry bike is lower, you might still be able to get a top-quality bike. In conclusion, always check bike reviews and their components before making a purchase to make sure you don’t overpay.
At the moment of the release date, Jamis HELIX A1 price was 599$. Doing a quick comparison, we notice that HELIX A1 price is 218.03% smaller than the average cost of a Crosscountry bike.
Crosscountry bikes average weight
Crosscountry bikes have an average weight of 12.4 kg (27.34 lbs). An easier bike will give you a big advantage in climbs. However, a heavier bike can gain speed when you descend.
With a weight of 14.17 kg (31.24 lbs), Jamis bike is considerably heavier than average. In conclusion, the average Crosscountry bike weighs 14.27% less than HELIX A1.
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 good shock absorbers and provide a smooth ride and a great experience. To sum it all, when buying a bike, ensure that you look for a fork capable of decent travel.
Fork material
HELIX A1 has an aluminum fork, which doesn’t add too much extra weight to the bike. However, it is not so stiff as steel or carbon forks are.
Wheels
As for the wheels, Jamis HELIX A1 2020, has a 27.5″ aluminum model. 27.5″ wheels are a mixture between 29″ wheels and 26″ wheels. However, the 27.5″ wheels are less forgiving than the 29″ wheels.
Brakes
For your safety, it is important to have quality breaks on your bike. Jamis HELIX A1 has Hydraulic Disc brakes installed. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, your safety is in good hands.
