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2026 Jamis

HELIX

A 27.5″ aluminum frame hardtail crosscountry bike with mid-range components.

Manufacturer Price

$699
Weight31.2 lbs  
FrameAluminum
SuspensionHardtail, 100mm
ForkSuntour XCE
Wheels27.5″ Aluminum
Drivetrain1 × 8
GroupsetmicroSHIFT Acolyte
BrakesShimano Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
HELIX
Other Crosscountry bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

24 mph

HELIX

27 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Price History
Geometry
Specs
Build
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

Travel100mm

Spring TypeCoil

Bottom Bracket

Sealed cartridge

Headset

Zero-stack internal cup, 8mm cone spacer

Stem

Jamis XC alloy threadless, 31.8 x 10˚ rise x 75mm (14”/16″), 90mm (18″)

Handlebar

Jamis XC alloy riser, 31.8 x 20mm rise x 680mm

Saddle

Jamis ATB Sport

Seatpost

Jamis alloy micro-adjust, 31.6 x 350mm (14″) 400mm (16″/18″)

TypeRigid

Pedals

MTB platform, hi-impact resin

Grips

Kraton

Groupset
Rear Derailleur

microSHIFT Acolyte M5185M 8-speed

Crank

Samox AF26, 32T

Shifters

microSHIFT Acolyte M6185, 1×8-speed

Cassette

microSHIFT H081, 8-speed, 11-42T

Chain

KMC Z8, 8-speed

Brakes

Shimano MT200 hydraulic disc, Shimano RT26 160mm rotors

TypeShimano Hydraulic Disc

Wheels
Rims

MTB double wall alloy disc 27.5″ rims, Joytec alloy disc hubs, nickel-plated spokes

Tires

Kenda Regio, 27.5 x 2.2”

Rider Notes
Riders Also Viewed

First added May 9

Last updated May 30