Skates
Boards
Scooters
Winter Sports
BMX
Apparel
Surf
On Sale
Description
The Madmain 20" bike series combines the Mafia bikes ethos with the core vision of Freestyle BMX superstar - Harry Main - to offer newcomers high-end components expertly assembled into durable bikes at reasonable prices.
This ensures you can acquire this bike with the confidence that it will support your skill development, allowing you to master barspins and whip tricks with ease over time.
Constructed from Hi-Ten steel, the Madmain bikes boast exceptional durability and longevity. A sealed mid Bottom Bracket ensures smooth pedalling. For those at the beginning of their journey, the Madmain series bikes are equipped with brakes, making them easy to stop.
Model specifications
| Model | Frame Top Tube |
| 20.4" | 20.4" (51.8cm) |
| 21" | 21" (53.3cm) |
Specifications
Wheel diameter:
20"
Bar design:
Two-piece
Hub:
Cassette, Unsealed bearings front, Semi-sealed bearings
Weight:
11.79kg
Frame material:
Hi-ten steel
Seat clamp:
Integrated
Seat:
Combo
Tire width:
2.4"
Pegs:
Not included, Not recommended
Axle diameter:
10mm, 12mm
Wheel offset:
30mm
Stem type/Length:
Front load
Stem diameter:
22.2mm
Headset type:
Integrated 1 1/8"
Headtube angle:
75.2°
BMX Brake Included:
U-brake (Rear)
Gyro compatible:
Yes
Gear ratio:
25/9
Crank Length/Type:
Three-piece
Pedal axle diameter:
9/16"
Sprocket mounting:
Bolt Drive
Driver side:
Right
Crank material:
Chromoly Steel
Bottom Bracket:
Mid, Sealed
Pedal material:
Plastic
Number of spokes:
36
Chain type:
Single speed
Assembly:
Partly assembled
reviews (154)
 Verified Buyer |
|
| "I bought this for my son, it’s his second mafia madmain bmx as he got to big for the first one, he loves it and it is a great bmx! Totally recommend it!" | |
| Alex Sharp (Brighton) | 2021-01-19 |
| Verified Buyer |
|
| "Lovely looking bike - Hrandson thrilled" | |
| Kay finch (Easton Maudit) | 2021-01-07 |
| Verified Buyer |
|
| "Our 10 year old son loves this bmx. Easy to put together and very sturdy. Delivery was great and very quick. Thanks so much we will definitely be ordering again. And highly recommend." | |
| Michelle Surtees (Sunderland) | 2020-12-30 |
| Verified Buyer |
|
| "Fantastic bike - my 11 years old son absolutely loves it! I was worried it might be too small but it is the perfect size and he is so proud of it. Very fast delivery too, easy to assemble (my son did it almost by himself!) and really good quality (and very light). Worth every penny! Thanks so much!" | |
| Maureen van Kleef (London) | 2020-10-07 |
| Verified Buyer |
|
| "Bought this for my 11 year old daughter for her birthday. Came flat packed. Easy to assemble if you have your own tools.( spanner provided is crap). Brakes are very speaky, but a bit of adjustment will be OK, hopefully. Added stunt pegs. Easy to fit. Looks the business, everybody comments saying it looks cool. Would defo recommend this bike. Looks stunning." | |
| John c. (MANCHESTER) | 2020-07-07 |
| Verified Buyer |
|
| "Son describes it as being “sic”" | |
| Harry brennan (Ravenshead) | 2020-07-06 |
| Verified Buyer |
|
| "Brought for Xmas my son absolutely loves it. Lovely looking bike." | |
| Lynda brooker (Radley) | 2020-01-07 |
| Verified Buyer |
|
| "For sons 13 th Birthday . Absolutely loves it . Fairly easy to put together if you know what you are doing . Took about 10 days to come, so order in advance if you are in the UK. Lovely colour . Better than the picture. Very pleased ." | |
| THERESA KENNETT-WHITE (Bracknell) | 2019-12-30 |
| Verified Buyer |
|
| "Great bike my son loves it.It was bought for his 14th birthday." | |
| Christine Wilson (WESTERHAM) | 2019-05-12 |
| Verified Buyer |
|
| "Livraison très rapide mais roue arrière légèrement voilé" | |
| Caravati cindy (Haut du them) | 2021-03-22 |
| Verified Buyer |
|
| "Tres beau vélo mon fils est ravi" | |
| STEPHANIE FRUITER (St Georges de luzencon) | 2021-01-11 |
| Verified Buyer |
|
| "Correspond à la description. Min fils est ravi." | |
| DELCOURT Paméla (Ribeaucourt) | 2020-12-30 |
| Verified Buyer |
|
| "En temps et en heure Qualité au RDV Envoi Très soigné" | |
| PFAU Yannick (Puget-sur-Argens) | 2020-11-17 |
| Verified Buyer |
|
| "J’avais peur d’acheter un vélo d’un certain prix sur internet. Et bien je suis vraiment satisfait et mon fils encore plus. L’emballage est vraiment soigné. Le peu de montage qu’il reste est simple. Vraiment ravi." | |
| L. Tom (Heudebouville) | 2020-09-14 |
