Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 700c -
Groupset Tourney -
Suspension Rigid -
Drivetrain 3 × 7 -
Brakes Mechanical Disc
Sizing
Recommended size guide.
XS
157cm - 169cm
SM
166cm - 174cm
MD
171cm - 182cm
LG
179cm - 189cm
XL
187cm - 195cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Tommaso 6061 SLA Aluminum Compact Road Frame
Suspension Fork
Tommaso SST Steel with Aluminum Steer Tube
Drivetrain
Rear Derailleur
Shimano Tourney (7-spd)
Front Derailleur
Shimano Tourney (3-spd)
Shift Levers
Shimano Tourney
Cassette
Shimano Tourney 12-28t - 7spd
Crank
Shimano Tourney Triple 30/39/50T
Bottom Bracket
Shimano BB - UN26
Chain
KMC Z-51 (7spd Chain)
Pedals
Composite Flat
Wheels
Rims
Tommaso Corsa TC-20D - 28 Spokes
Tires
CST Tirent All-Terrain 700x40c
Brakes
Brakes
Avid BB5 Disc Calipers
Brake Levers
Shimano Tourney
Cockpit
Stem
Tommaso Ultralight Sport Series Aluminum
Handlebar
Tommaso Ultralight Alloy Compact Flat Top Bar
Headset
1-1/8" Threadless Integrated
Seat
Saddle
Tommaso Saddle
Seatpost
Tommaso TRS Ultralight Race Series Aluminum 27.2mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Rake | 45 mm | 45 mm | 45 mm | 45 mm | 45 mm |
| Top Tube Length | 524 mm | 544 mm | 559 mm | 574 mm | 589 mm |
| Seat Tube Angle | 74 ° | 73.5 ° | 73 ° | 73 ° | 73 ° |
| Seat Tube Length | 450 mm | 480 mm | 510 mm | 540 mm | 570 mm |
| Head Tube Angle | 72 ° | 72 ° | 72 ° | 72.5 ° | 72.5 ° |
| Head Tube Length | 135 mm | 150 mm | 170 mm | 190 mm | 210 mm |
| Chainstay Length | 409 mm | 409 mm | 409 mm | 409 mm | 409 mm |
| Wheelbase | 972 mm | 988 mm | 998 mm | 1008 mm | 1023 mm |
| Standover Height | 724 mm | 749 mm | 769 mm | 794 mm | 819 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 |
| Rider Min Height | 157 cm | 166 cm | 171 cm | 179 cm | 187 cm |
| Rider Max Height | 169 cm | 174 cm | 182 cm | 189 cm | 195 cm |
About this model
Siena Disc is part of the Tommasso Siena model. 2 bikes variations carry this model name so far.
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 Gravel bikes
If you want an acceptable Gravel bike you should know that the average price is 2462$. However, this doesn’t mean that if you spend less money on a Gravel bike, you couldn’t get a decent one. As a general rule of thumb, you should always read reviews about the bike and its components before buying it to ensure you don’t pay too much.
Furthermore, this bike was made available in 2021 for 874$. Comparing the average cost of a Gravel bike to this one, you will see that Siena Disc price is 181.69% smaller.
Siena Disc components
Fork material
When it comes to the fork, this bike has an aluminum one, so there won’t be much extra weight added to the bike. However, they are not so stiff as carbon forks are.
Wheels
The Siena Disc 2021 bike is equipped with 700c aluminum wheels when leaving the factory. There is no doubt, that 700c wheels are very popular on all road bike models. However, while they give you great speed and control, these wheels are not so bump-friendly.
Brakes
For your safety, it is important to have quality breaks on your bike. Tommasso Siena Disc has Mechanical Disc brakes installed. They deliver good performance and cost less than hydraulic disk brakes. However, they don’t have the stopping power of hydraulic brakes.
Sizes
Tommasso Siena Disc bike has 5 sizes, in the range of 157 cm – 195 cm (5.15 ft – 6.4 ft). In conclusion, finding one for you shouldn’t be a problem.