- DUAL PURPOSE: The Siena is an affordable adventure bike that can ride both trails and roads with ease.
- SHIMANO TOURNEY: 100% Shimano Tourney drivetrain for optimal shifting and performance.
- 40c CST TIRENT ALL-TERRAIN TIRES: These ultra-wide tires are at home on the trail or gravel road.
- AVID BB5 DISC BRAKES: Exceptional braking in all wet and dry conditions.
- VIBRATION DAMPENING TECHNOLOGY: Vibration Dampening Technology, providing reduced road vibrations and increased control.
- READY TO RIDE: All bikes come fully tuned and adjusted with our Ready to Ride Build and 14 Day Test Ride. From box to the road in minutes!
- VALUE: All our bikes are backed by a lifetime frame & fork warranty and responsive customer service…yes we actually answer the phone.
KEY FEATURES
Shimano Tourney: This all Shimano drivetrain has 3x7 gearing to tackle the climbs, is ultra-reliable, and gives you a smooth shift every time.
40c CST Tirent All-Terrain Tires: These ultra-wide 40c tires will give you the grip you need to tackle the trails, while still performing on the road.
Avid BB5 Disc Brakes: Disc brakes are great in all weather conditions and are designed to make you stop smooth and fast no matter what.
VDT (Vibration Dampening Technology): Tommaso forks use a thicker steel, which increases durability and reduces vibrations for a smoother ride.
SLA (Super Light Aluminum): Hardened, lightweight, corrosion resistant 6061 alloy makes this frame light, non-rusting and durable.
Corsa TC20D Wheels: Featuring 28 spokes in the front and rear and a 20mm rim profile that allows you to cut through the air.
Tommaso UltraCompact Handlebars: UltraCompact flattop bars allow you to easily utilize all bar positions, maximizing efficiency, comfort, and reducing hand pressure.
OGS (Optimized Geometry System): Designed to put you in the optimal position, the Tommaso compact frame geometry lets you push your riding farther, while keeping your back and neck happy.
Tommaso Custom Saddle: This saddle is lightweight and flexible, allowing optimal flex over bumps, to reduce any discomfort for the rider.
DESCRIPTION
If you have been looking for an incredibly versatile bike that can ride any terrain you can think of, but also in search of a great deal, then look no further than the Tommaso Siena. Featuring our unbreakable SLA 6061 aluminum frame and VDT steel fork, the Siena is designed to take a beating and come back for more. You need more than a great frameset to crush dirt and gravel, so we put on tough 28 spoke TC20D wheels, equipped with 40c CST Tirent All-Terrain tires, and powerful Avid BB5 disc brakes. We finished it off with a 21 speed Shimano Tourney drivetrain, so you have a wide range of gears, for any terrain. This is the most versatile bike anywhere for the money, so stop dreaming and start riding today!
The Siena, like every Tommaso bike, is backed by a LIFETIME frame and fork warranty, 14 Day Test Ride, and USA-based customer service so you can ride confidently knowing the Tommaso Team is here for you.
JOIN THE RIDE!
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specifications
FRAMESET & COCKPIT
| 1-1/8" Threadless Integrated | |
| Frame | Tommaso 6061 SLA Aluminum Compact Road Frame |
| Fork | Tommaso SST Steel with Aluminum Steer Tube |
| Sizes | XS, S, M, L, XL |
| Headset | 1-1/8" Threadless Integrated |
| Handlebar | Tommaso Ultralight Alloy Compact Flat Top Bar |
| Handlebar Width | 400mm (XS Frame) / 420mm (S, M, L Frames) / 440mm (XL Frame) |
| Handlebar Drop | 125mm |
| Handlebar Tape | Tommaso Cork Tape Black |
| Stem | Tommaso Ultralight Sport Series Aluminum (+/- 7°) |
| Stem Length | 75mm (XS Frame) / 90mm (S Frame) / 105mm (M Frame) / 120mm (L, XL Frames) |
| Saddle | Tommaso Saddle |
| Seatpost | Tommaso TRS Ultralight Race Series Aluminum 27.2mm |
| Pedals | Composite Flat |
DRIVETRAIN
| Shifters | Shimano Tourney |
| Front Derailleur | Shimano Tourney (3-spd) |
| Rear Derailleur | Shimano Tourney (7-spd) |
| Cassette | Shimano Tourney 12-28t - 7spd |
| Speeds | 3x7 (21 Total Speeds) |
| Crankset | Shimano Tourney Triple 30/39/50T |
| Crank Arm Length | 170mm - All Sizes |
| Chain | KMC Z-51 (7spd Chain) |
| Bottom Bracket | Shimano BB-UN26 |
BRAKES & WHEELS
| Brakes | Avid BB5 Disc Brakes |
| Brake Levers | Shimano Tourney |
| Wheelset | Tommaso TC-20D Wheelset - 28 Spokes |
| Tires | CST Tirent All-Terrain 700x40c |
| Tubes | 700 x 40c Presta |
GEOMETRY
A - Seat Tube
B - Top Tube
C - Top Tube - Effective
D - Seat Tube Angle
E - Head Tube Angle
F - Head Tube (mm)
G - Fork Offset
H - Chainstay
I - Wheelbase
| FRAME SIZE | XS | S | M | L | XL |
| Recommended Height | 5'2" - 5'6" | 5'6" - 5'8" | 5'8" - 5'11" | 5'11" - 6'2" | 6'2"- 6'5" |
| Seat Tube (mm) | 450 | 480 | 510 | 540 | 570 |
| Top Tube (mm) | 506.3 | 525.2 | 539.5 | 555.7 | 571.6 |
| Top Tube (mm) - Effective | 525 | 545 | 560 | 575 | 590 |
| Chainstay (mm) | 410 | 410 | 410 | 410 | 410 |
| Wheelbase (mm) | 973.9 | 989.3 | 999.4 | 1009.7 | 1024.9 |
| Fork Offset (mm) | 45 | 45 | 45 | 45 | 45 |
| Head Tube Angle (deg) | 72 | 72 | 72 | 72.5 | 72.5 |
| Seat Tube Angle (deg) | 74 | 73.5 | 73 | 73 | 73 |
| Head Tube (mm) | 135 | 150 | 170 | 190 | 210 |
| Stand over Height (mm) | 725 | 745 | 770 | 795 | 820 |
| Stem (mm) | 80 | 80 | 90 | 100 | 100 |
| Crank (mm) | 170 | 172.5 | 172.5 | 175 | 175 |
sizing guide
Inseam Measurement: distance from ground to just below groin. Make sure to have about an inch clearance over Top Tube.
| FRAME SIZE | HEIGHT | TOP TUBE |
| XS | 5'2" - 5'6" | 725mm |
| S | 5'6" - 5'8" | 750mm |
| M | 5'8" - 5'11" | 770mm |
| L | 5'11" - 6'2" | 795mm |
| XL | 6'2" - 6'5" | 820mm |
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| FRAME SIZE | HEIGHT | INSEAM |
| XS | 5'2" - 5'6" | 5'2" - 5'6" |
| S | 5'6" - 5'8" | 5'6" - 5'8" |
| M | 5'8" - 5'11" | 5'8" - 5'11" |
| L | 5'11" - 6'2" | 5'11" - 6'2" |
| XL | 6'2" - 6'5" | 6'2" - 6'5" |