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2021 Jamis

EXPLORER A1

A 27.5″ aluminum frame hardtail crosscountry bike with mid-range components and tektro mechanical disc brakes.

Manufacturer Price

699 $(601 €)
Weight15,7 kg  
FrameAluminum
SuspensionHardtail, 80mm
ForkSuntour XCE
Wheels27.5″ Aluminum
Drivetrain3 × 8
GroupsetTourney
BrakesTektro Mechanical Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
EXPLORER A1
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)

53 km/h

EXPLORER A1

44 km/h

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Highest gear

(descending)

Geometry
Specs
Build
Frame

6061 TIG-welded aluminum, all-new sport comfort design with upright ride position, replaceable derailleur hanger

Fork

SR Suntour XCE 27.5”, coil spring, external preload adjustor, 28mm stanchions, aluminum lowers, 80mm travel

Travel80mm

Spring TypeCoil

Bottom Bracket

Sealed cartridge, 68 x 110.5mm

Headset

Internal cup, threaded, 1 1/8”

Stem

Jamis alloy, angle-adjustable, 90mm ext x 150mm quill (14 ̊18”) or 110mm ext x 180mm quill (19 ̊21”)

Handlebar

Comfort hi-rise, alloy 25.4 x 80mm rise x 15 ̊ sweep x 640mm

Saddle

Jamis Comfort with memory foam, synthetic suede top, burnished side panels and bumper springs

Seatpost

Suspension, alloy micro-adjust, 350mm x 27.2mm, with alloy QR clamp

TypeSuspension

Pedals

Comfort platform with TPE non-slip insert

Grips

Kraton comfort

Groupset
Rear Derailleur

Shimano TX-800 rear, Shimano TY710 31.8mm top swing/ dual pull front

Crank

Shimano TY301, 48/38/28T, 170mm with chainguard

Shifters

Shimano EZ-Fire Plus, ST-EF510, 24-speed

Cassette

Shimano HG20, 8-speed, 12-32

Chain

KMC Z7

Brakes

Tektro forged alloy direct pull brakes with Shimano levers

TypeTektro Mechanical Disc

Wheels
Rims

Double-wall alloy rims, 32H, alloy hubs with QR, 14g stainless steel spokes

Tires

CST – 1918, 27.5 x 2.1

Rider Notes
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First added 31 July

Last updated 6 November

Not listed for 1,301 days