- Save $250 OFF - Use Code BIKE250 at checkout.
- TACKLE THE HILLS: The Gran Sasso gives you an all-terrain performance beast ready for adventures.
- HYDROFORM MOUNTAIN SERIES FRAME: Using 6061 Aluminum, this frame is ultra-durable and rides smooth.
- SHIMANO ACERA/ALTUS DRIVETRAIN: With a huge range of 100% Shimano gears, you can climb with ease and descend with speed.
- SR SUNTOUR SF15-XCM SUSPENSION FORK: 100mm of travel eats up obstacles for a great ride.
- SHIMANO M315 HYDRAULIC DISC BRAKES: Hydraulic disc brakes offer amazing stopping power, feedback, and safety.
- 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
HMS (Hydroform Mountain Series) Frame: An incredibly durable frame design that offers maximum smoothness with a sloped top tube for easy dismounts and added safety.
Shimano Acera/Altus Drivetrain: This all-Shimano drivetrain is built for the mountains with durable, reliable, and smooth shifting. The 3x8 gearing will make sure you can tackle any obstacle. S
R Suntour SF15-XCM Suspension Fork: Featuring 100mm of travel, this spring coil fork lets you crush the trails with confidence.
Shimano M315 Hydraulic Disc: These all-weather brakes, with unparalleled stopping power, are just want you need for flying down a mountain.
Tommaso Bombproof MTB Wheels: The ultra-durable construction and sturdy design of these wheels, provide exceptional strength and durability to tackle every trail and mountain.
OBS (Optimized Braking Stays): This added flex elimination bar makes the rear brake more effective and reliable than ever, so you can stop with confidence.
Tommaso Velo Steel Saddle: This comfortable saddle, with steel rails for added durability, is designed to take the abuse of trail riding.
Quick Adjust Seatpost Clamp: This will help you to loosen your seat post collar quickly and easily for on-the-fly adjustments during your ride.
DESCRIPTION
Named after one of the most massive peaks in all of Italy, the Gran Sasso was developed for riders who want to climb rocks and shred dirt at an affordable price and unbeatable value. To do this, we start off with our insanely durable hydroform mountain series frame and SR Suntour suspension fork to soak up the rocks and bumps you’ll fly past on this 29er. We know that the trails require fast thinking, as well as quick braking, so we designed the Gran Sasso frame with a special flex eliminating bar, so that the Shimano hydraulic disc brakes can do their job and keep you safe ride after ride. Obstacles are part of trail riding, but they are no match for our bombproof 29er wheels and beefy tires, which roll over everything with ease. Go ahead, ride this beast of a bike with confidence, and enjoy the fresh mountain air.
The Gran Sasso, like every Tommaso bike, is backed by a LIFETIME frame and fork warranty, 14 Day Test Ride, and USA-based customer service to give you confidence that we will always be there to support you.
JOIN THE RIDE!
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specifications
FRAMESET & COCKPIT
Frame | Tommaso 29" Aluminum MTB Frame |
Fork | SR Suntour SF15-XCM 29" with 100mm Travel |
Sizes | S, M, L, XL |
Headset | Integrated 1-1/8" Threadless |
Handlebar | Zoom 320BTFOV Alloy (680mm) |
Stem | Zoom D507A (110mm) |
Saddle | Tommaso Velo Steel Rails |
Seatpost | Tommaso Aluminum (31.6mm) |
Pedals | Composite Flat |
DRIVETRAIN
Shifters | Shimano Acera |
Front Derailleur | Shimano Altus (3-spd) |
Rear Derailleur | Shimano Acera (8-spd) |
Cassette | Shimano Altus 11-32 - 8spd |
Speeds | 3x8 (24 Total Speeds) |
Crankset | Shimano Altus Triple 22/32/42T |
Crank Arm Length | 170mm (S Frame) / 175mm (M, L, XL Frames) |
Chain | KMC Z-72 (8spd Chain) |
Bottom Bracket | Neco B-910 |
BRAKES & WHEELS
Brakes | Shimano M315 Hydraulic Disc |
Tubes | 29x2.1 Presta |
Wheelset | Mingda DP-20 |
Tires | Kenda K-1104A 29x2.1 |
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 | 5'1" - 5'4" | 5'5" - 5'9" | 5'9" - 5'11" | 6'0" - 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) | 720 | 745 | 762 | 795 | 825 |
Stem (mm) | 80 | 80 | 90 | 100 | 100 |
Crank (mm) | 170 | 172.5 | 172.5 | 175 | 175 |
sizing guide
Measure the distance from the ground up to just below your groin
FRAME SIZE | HEIGHT | INSEAM |
S | 5'5" - 5'9" | 745mm |
M | 5'9" - 5'11" | 762mm |
L | 6'0" - 6'2" | 795mm |
XL | 6'2" - 6'5" | 825mm |
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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" |