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OS 20" BMX Stunt Bike

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Description

Old-school x New-school mashup

The OS 20" by Mafia bikes is heavily inspired by the old-school cool 80's bike designs but features a healthy amount of new school parts as well. The OS 20" is meant for nostalgic parents who want a piece of the pie while looking over their child at the skate park.

Technical features

  • Hi-ten steel frame with a semi-short top tube (20.5") and a long rear end (14.2" CS)
  • Hi-ten steel internally threaded fork with 30mm offset
  • Welded brake mounts at the chainstays
  • Beefy 40T sprocket and 16T freewheel
  • Steezy Skyway wheels with fat 2.4 Lagos tyres
  • Easy-maintainable 3-piece crank in an old-school spider design
  • New-school; Mid bottom bracket, Hitmain grips, sealed headset, taller and wider bars etc.

Specifications

Wheel diameter:
20"
Frame Top Tube:
20.5"
Bar design:
Two-piece
Bar height:
9"
Bar width:
29"
Backsweep:
11°
Upsweep:
Hub:
Cassette, Sealed bearings
Frame material:
Hi-ten steel
Seat clamp:
Integrated
Seat:
Combo
Tyre width:
2.4"
Pegs:
Not included
Wheel offset:
30mm
Stem type/Length:
Top load
Stem diameter:
22.2mm
Headset type:
Integrated 1 1/8"
BMX Brake Included:
U-brake (Rear)
Gyro compatible:
Yes
Chainstay length (Centre):
14.2'' (36.1cm)
Gear ratio:
40/16
Crank Length/Type:
Three-piece
Pedal axle diameter:
9/16"
Sprocket mounting:
Bolt Drive
Driver side:
Right
Crank material:
Chromoly Steel
Bottom Bracket:
Mid
Crank Axle Diameter:
19mm
Pedal material:
Plastic
Number of spokes:
5
Chain type:
Single speed
Assembly:
Partly assembled
Recommended from:
13 years

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