
Mafiabikes Hitmain 20.4" TT BMX Frame | Splatter Fuel
Description
Mafiabikes Hitmain 20.4" TT BMX frame — compare the geometry for your next build:
Key features
- Material: Japanese Sanko 4130 chromoly
- Top tube (TT): 20.4"
- Chainstay (CS): 13"
- Head tube angle (HA): 75.2°
- Tyre clearance: up to 2.4"
- Weight: 2.22 kg
The Mafiabikes Hitmain is Harry Main’s signature aftermarket BMX frame, built from Japanese Sanko 4130 chromoly. Its 20.4" top tube is a frame dimension, not the wheel size: use it alongside the rest of the geometry when comparing your setup.
Compare the geometry before you build
The frame combines a 13" chainstay with a 75.2° head tube angle and 71° seat tube angle. Compare these figures and the 11.5" bottom bracket height with a frame you already ride to choose the geometry you prefer.
Reinforcement around the frame junctions
The triple-butted top tube has an internal gusset at the head tube. The down tube is double-butted and tapered with an external gusset, and the chainstays are heat-treated.
Choose your brake setup
Removable cable guides, brake mounts and gyro tabs give you options when planning the build. The seat tube accepts the Bullet Mod gyro-cable hanger, and the frame has clearance for tyres up to 2.4".
Manufacturer’s warranty
Mafiabikes lists a lifetime manufacturer’s warranty for aftermarket Hitmain frames, subject to its coverage and exclusions. Read the manufacturer’s warranty terms before choosing your frame.
Mafiabikes Hitmain 20.4" TT BMX frame — specifications:
- Material: Japanese Sanko 4130 chromoly
- Top tube (TT): 20.4"
- Chainstay (CS): 13"
- Standover (SO): 8.5"
- Head tube angle (HA): 75.2°
- Seat tube angle (SA): 71°
- Bottom bracket height (BB): 11.5"
- Tyre clearance: up to 2.4"
- Weight: 2.22 kg
- Chainstays: heat-treated
- Top tube construction: triple-butted; internal head tube gusset
- Down tube construction: double-butted and tapered; external logo gusset
- Brake fittings: removable cable guides, brake mounts and gyro tabs
- Dropouts: 14 mm; CNC-machined and heat-treated
- Rear bridge: curved
- Seat clamp: integrated, angle-cut
- Head tube: 114 mm; CNC-machined and heat-treated; integrated headset fit
- Bottom bracket shell: Mid BB; CNC-machined and heat-treated
- Rear triangle tubing: tapered
- Cable hanger compatibility: Bullet Mod for gyro brake cables
Safety
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