Bred for winter in the Rockies — The all-new Tonton V2 is the fat bike for mountain bikers
Modern
Angles
Size Specific
Geometry
Narrow
Q Factor
3D Printed
Yokes
Universal
Derailleur Hanger
Select a build
Select a size
Comp — $5,600 | ⭑ Pro — $7,500 | |
Frame | Tonton Steel | Tonton Steel |
Suspension | Suspension | Suspension |
Fork | Mastodon Comp Gen 3 120mm | Mastodon Pro 120mm ⭑ |
Shock | - | - |
Brakes | Brakes | Brakes |
Brakes | Sram Code R | Sram Code RSC ⭑ |
Brake Rotors | Sram Centerline 6B 200mm/180mm | Sram HS2 6B 200mm/180mm ⭑ |
Drivetrain | Drivetrain | Drivetrain |
Derailleur | Sram GX 12s | Sram GX 12s |
Shifter | Sram GX 12s | Sram GX 12s |
Cranks | Sram GX 30T (XS-M:165mm, L-XL:170mm) | Sram GX 30T (XS-M:165mm, L-XL:170mm) |
Cassette | Sram GX 12s 50T | Sram GX 12s 50T |
Bottom Bracket | SRAM DUB British 100mm External Cup BB 28.99mm | SRAM DUB British 100mm External Cup BB 28.99mm |
Chain | Sram GX 12s | Sram GX 12s |
Tensioner / Guide | Ridewrap Chainstay & Sram UDH | Ridewrap Chainstay & Sram UDH |
Controls | Controls | Controls |
Handle Bar | OneUp Alloy 35mm Rise 35mm | OneUp Carbon 35mm Rise 35mm ⭑ |
Stem | OneUp 35mm Length 42mm | OneUp 35mm Length 42mm |
Grips | OneUp Slim Black | OneUp Slim Black |
Headset | Cane Creek 40 | Cane Creek 70 ⭑ |
Saddle | WTB Koda Steel M | WTB Koda Chromoly ⭑ |
Dropper Post | OneUp V2 (XS:150mm, S:180mm, M-L:210mm, XL-XXL:240mm) | OneUp V3 (XS:150mm, S:180mm, M-L:210mm, XL-XXL:240mm) ⭑ |
Dropper Lever | OneUp V3 | OneUp V3 |
Wheels | Wheels | Wheels |
Front Wheel | SunRingle Mulefut 80 27.5" 15x150mm | SunRingle Mulefut 80 27.5" 15x150mm |
Rear Wheel | SunRingle Mulefut 80 27.5" 12x197mm | SunRingle Mulefut 80 27.5" DT 350 Hub 12x197mm ⭑ |
Tires Front/Rear | WTB Bailiff Studded 27.5x4.5" | 45NRTH Wrathchild 120tpi 252XL Studs 27.5x4.5" ⭑ |
in mm | XS | S | M | L | XL | XXL | |
---|---|---|---|---|---|---|---|
A | Reach | 420 | 440 | 460 | 480 | 500 | 520 |
B | Stack | 639 | 639 | 648 | 657 | 666 | 666 |
C | Head Tube Length | 110 | 110 | 120 | 130 | 140 | 140 |
D | Head Tube Angle | 64.0° | 64.0° | 64.0° | 64.0° | 64.0° | 64.0° |
E | Front Center | 756 | 776 | 801 | 825 | 850 | 869 |
F | Wheel Base | 1196 | 1216 | 1241 | 1275 | 1300 | 1319 |
G | Rear Center | 440 | 440 | 440 | 450 | 450 | 450 |
H | BB Drop | 66 | 66 | 66 | 66 | 66 | 66 |
I | BB Height | 324 | 324 | 324 | 324 | 324 | 324 |
J | Seat Tube Angle | 76.0° | 76.0° | 76.0° | 76.0° | 76.0° | 76.0° |
K | Seat Tube Length | 362 | 382 | 400 | 422 | 432 | 442 |
L | Bike Standover | 720 | 720 | 724 | 738 | 737 | 731 |
M | Effective TT Length | 573 | 594 | 616 | 639 | 661 | 681 |
N | Offset | 51 | 51 | 51 | 51 | 51 | 51 |
O | Axle To Crown | 551 | 551 | 551 | 551 | 551 | 551 |
P | Suggested Height | 5'0" - 5'4" | 5'4" - 5'7" | 5'7" - 5'10" | 5'10" - 6'1" | 6'1" - 6'4" | 6'4" + |
Frame Material | 4130 Chromoly Steel |
Wheel Size | 27.5" |
Fork Size | 120mm |
Seatpost Diameter | 31.6mm |
Headset Size | Upper: ZS44 / Lower: ZS56 |
Bottom Bracket | Threaded 100mm BSA |
Rotors Front / Rear | 200mm / 180mm |
Rear Wheel Spacing | 12x197mm |
Crank Chainline | 66.5mm |
Rear Brake Mount | 160mm Post Mount |
Derailleur Hanger | SRAM UDH |
The Geometry
We designed the new Tonton with modernized geometry that is size specific, allowing riders of every shape to fat bike.
A slack head tube angle, longer reach, and short seat tube makes riders feel their most confident on the descent.
With a steep forward offset seat tube, and shorter chainstays, maximum rear wheel traction is achieved on those nasty climbs.
The Build Kits
Built for a purpose, each part chosen by the hands of avid fat bikers.
The Tonton is paired with four piston Sram DOT fluid brakes for a consistent brake feel, even in freezing temps.
The Tonton comes with one of the top performing winter forks, the Manitou Mastodon. It is cold weather rated so that you can maximize all 120mm of travel.
With a slimmed out rear end and more room for Sram’s GX drivetrain, a narrower Q factor that facilitates a more ergonomic pedaling motion has been achieved.
The Build Ingredients
Notorious for its strength while retaining compliance, the Tonton is constructed from high grade 4130 chromoly steel tubes which are laser cut and fused by local red seal welders.
To get the exact geometry we desired, we applied additive manufacturing techniques to our seat and chainstay yokes. These 3D printing methods allowed us to reduce weight, retain strength, and increase tire clearance.
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