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MAFIABIKES BOMMA 29 STEEL
The bike that helped start a movement is back.
The all-new Bomma 29 stays true to the original formula that made it a favourite in the culture, but now comes upgraded where it matters most. We’ve fitted a powerful Shimano MT200 hydraulic rear brake for improved control at balance point, switched to a freewheel rear hub for ease of upgrades and added integrated peg mounts to the rear dropouts so you can push combos without damaging rear axles!
Built around the same proven steel frame and wheelie-specific geometry, the Bomma steel delivers a huge balance point, predictable handling and the durability to take daily street abuse.
Whether you’re learning your first wheelies or smashing combos like a pro, this is a bike designed by riders who live the culture and know exactly what you need.
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Frame: Bomma 29 2026 High Tensile Steel Single Speed Frame, Peg Mount Integrated Dropouts, Threaded Bottom Bracket Fork: Bomma 29 Handlebar: Bomma 2-Piece, 762mm Width × 168mm Rise Grips: Mafia 2026 Mushroom Grips Headset: 1-1/8" External, Unsealed Bearings Stem: Mafiabikes 2026 Forged Top-Load, 50mm Reach Pedals: Mafiabikes Plastic Pedals Saddle: Mafiabikes Wheelie Seat, Railed Seatpost: Ø25.4mm Micro-Adjust Alloy Seat Clamp: Ø28.6mm External Quick Release Cranks: 170mm 4130 Chromoly, 19mm 8-Spline, Heat-Treated Chainring: 32T Steel, BMX Fitment Freewheel: 16T, M30 × 1mm Threaded Front Tire: Lagos Snakeskin "S" Super Soft Compound, 27.5" × 2.5" Rear Tire: Lagos Snakeskin "S" Super Soft Compound, 27.5" × 2.5" Front Hub: Alloy Shell, 3/8" Axle, Sealed Bearings Rear Hub: Alloy Shell, 3/8" Axle, Threaded Freewheel, Fully Sealed Bearings, Disc Compatible Front Rim: Mafia 2026 27.5", 30mm Wide Low-Profile Double-Wall Alloy, 36H Rear Rim: Mafia 2026 27.5", 30mm Wide Low-Profile Double-Wall Alloy, 36H Front Brake: Side Pull Cable Brake (Supplied in Road Kit) Rear Brake: Shimano Hydraulic Disc Brake, 160mm Rotor Bottom Bracket: 73mm ISO Threaded Rear Axle Spacing: 135mm Front Axle Spacing: 100mm Max Tire Width: 66mm (2.6") Front & Rear Weight: 35 lbs -
All bikes purchased through City Grounds MUST be assembled by a certified bike shop mechanic. If the bike is NOT built by a certified bike shop mechanic, any warranty will be VOID. We will request for an assembly receipt as proof of professional installation.
For all warranty claims, please contact our Warranty Team at warranty@citygrounds.com. So that we can help you in a timely manner, make sure to include the following:
- 1. Order Number (we will confirm date of purchase and determine if the item is still under the manufacturer’s warranty time limit)
- 2. Brief description of the claim
- 3. Photographs
- 4. If the item is a bike or frame, include the serial number
We evaluate all warranties case-by-case to determine the best course of action and get you serviced to the best of our ability!
Warranty does not apply to the following:
- • Any part of a product that has been installed, altered, repaired, or misused
- • Damage from unintended style of riding, abuse, neglect, accident, and racing
- • Normal wear and tear of any product (including but not limited to - saddles, grips, tires, tubes, cables, brake pads, chains)
- • Failure to provide regular maintenance of any product
Labor and shipping are the responsibility of the customer. We do not cover parts purchased and labor performed by another bike shop.
Note: Warranty is for original owner only.
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