2021 Tommaso

Siena Disc

An aluminum frame gravel bike with mid-range components and mechanical disc brakes.
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MSRP$874
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels700c Aluminum
Drivetrain3 × 7
GroupsetTourney
BrakesMechanical Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
smoothrugged
Siena Disc
Other Gravel 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)

36 mph

Siena Disc

36 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.

Sizing
XS

5'2" – 5'7"

SM

5'5" – 5'9"

MD

5'7" – 6'0"

LG

5'10" – 6'3"

XL

6'1" – 6'6"

Rider Fit Notes

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Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Tommaso 6061 SLA Aluminum Compact Road Frame

Fork

Tommaso SST Steel with Aluminum Steer Tube

Bottom Bracket

Shimano BB - UN26

Headset

1-1/8" Threadless Integrated

Stem

Tommaso Ultralight Sport Series Aluminum

Handlebar

Tommaso Ultralight Alloy Compact Flat Top Bar

Saddle

Tommaso Saddle

Seatpost

Tommaso TRS Ultralight Race Series Aluminum 27.2mm

TypeRigid

Pedals

Composite Flat

Groupset
Rear Derailleur

Shimano Tourney (7-spd)

Front Derailleur

Shimano Tourney (3-spd)

Crank

Shimano Tourney Triple 30/39/50T

Shifters

Shimano Tourney

Cassette

Shimano Tourney 12-28t - 7spd

Chain

KMC Z-51 (7spd Chain)

Brakes

Avid BB5 Disc Calipers

TypeMechanical Disc

Brake Levers

Shimano Tourney

Wheels
Rims

Tommaso Corsa TC-20D - 28 Spokes

Tires

CST Tirent All-Terrain 700x40c

Rider Notes
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Last updated April 22
Not listed for 1,087 days