2020 Jamis

EXPLORER A1

A 650b aluminum frame comfort bike with mid-range components and rim brakes.
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Manufacturer Price

$549
Weight34.5 lbs  
FrameAluminum
SuspensionHardtail, 80mm
ForkSuntour XCE
Wheels650b Aluminum
Drivetrain3 × 8
GroupsetTourney, Shimano
BrakesRim
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Insights
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)

33 mph

EXPLORER A1

29 mph

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Highest gear

(descending)

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

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

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 620mm

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

SR Suntour XCC-T208, 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

TypeRim

Wheels
Rims

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

Tires

CST - 1918, 27.5 x 2.1

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Last updated April 27
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