Description
Here is the Bomma TTO. "The Take over" is the new benchmark 27.5” single speed street-bike for those who demand an all-round performer for combos and traffic work but find the 29” bikes just a little too big. .. With an emphasis on “buy it and ride-it” (no upgrades needed), We took our tried and tested geometry/know-how and packaged it into a lighter stiffer machine. We then wrapped that up in a selection of exciting new colourways to form the basis of your next individual creation. TTO starts life as a lightweight single speed bike, but has been cleverly designed for you to easily switch to gears down-the-line. Simply change-out the rear wheel, rear dropout insert, adding a mech and shifter and you now have a geared bike like BOMMA THRUST. All cable routing is pre-installed and we offer the mech insert as an additional part.
Featuring Shimano Hydro (MT200), hollow tech sealed BB, hydro-formed 6061 alloy frame with CNC machined components and peg mounts as standard, SnakeskinS (Sticky) tyres and 29” alloy double wall rims. To name but a few of the impressive features.
Geometry
| (A) Top tube length | 589.5mm |
|---|---|
| (B) Head tube length | 105mm |
| (C) Standover | 744mm |
| (D) Reach | 432mm |
| (E) Stack height | 554mm |
| (F) Bottom Bracket | 11.6 |
Specifications
| Frame | TTO 27.5 |
|---|---|
| Forks | Bomma Flanged 27.5 |
| Handlebars | Bomma 2 piece W762mm x H168mm |
| Grips | Mafia 2026 Mushroom grip |
| Headset | 1 1/8” Integrated – Sealed bearings |
| Stem | Mafiabikes 2026 forged topload – 50mm reach |
| Pedals | 9/16” Mafiabikes plastic PP |
| Saddle | Mafiabikes Wheelie seat – Railed |
| Seatpost | Ø31.6mm micro adjust alloy |
| Seat Clamp | Ø35mm External QR |
| Cranks | 170mm forged direct mount alloy cranks – 24mm hollow spindle |
| Chainring/sprocket front | 32t Direct Mount Steel thick-thin |
| Sprocket/cassette rear | 15t Freewheel |
| Tyre Front | Lagos Snakeskin "S" Super Soft Compound 27.5" x 2.5" |
| Tyre Rear | Lagos Snakeskin "S" Super Soft Compound 27.5" x 2.5" |
| Front hub | Alloy shell, 3/8" axle, sealed bearings |
| Rear hub | Alloy shell, 3/8" axle, BMX threaded Freewheel, Fully sealed bearings, Disc |
| Rim front | 27.5" 30mm Mafia 2026 Wide low profile double wall alloy 36h |
| Rim rear | 27.5" 30mm Mafia 2026 Wide low profile double wall alloy 36h |
| Brake Front | Side pull cable brake (supplied in roadkit) |
| Brake Rear | Shimano MT200 – hydraulic disc brake 160mm rotor |
Tech Details
| BB type | 73mm ISO External (24mm) |
|---|---|
| Headset type | 1 1/8” integrated |
| Rear axle/hub spacing | 3/8" x 135mm axle |
| Max tyre width rear | 66mm / 2.6" |
| Seatpost/seatclamp | Ø31.6mm post, 35mm seatclamp |
| Front axle/hub spacing | 3/8" x 100mm axle |
| Max tyre width front | 66mm / 2.6" |
| Frame construction and details | 6061 T6 Aluminum, IS rear brake tab, heavy duty hydroformed downtube and chainstays, peg mount integrated dropouts, interchangable geared to single speed dropout inserts |
| Road kit | Included |
Available to order: 29ers Bike Shop is an authorized Mafia Bikes dealer. This bike is ordered in for you – contact us for current lead time.
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