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My 26" steel street/trial

La Bourde

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Just want to show you the last street/trial bike I built, because I really appreciate the result.

The aim was to have a cheaper bike, with reliable/low maintenance parts.



The frame is an (used) Octane01 Spark. It is basically a skatepark frame, from the NS Bike sister brand. Its price is reasonable (less than the rear wheel).

It is on the heavy side, but I did not expect the bike to ride that well. To me, it is like a low budget Arcade with 26" wheels.

The geometry is:

  • wheelbase: 1010mm
  • chainstay: 381mm
  • bb height: around 350, so about +20mm
  • head angle: 74°
  • the fork has an axle to crown distance of 445mm and can be replaced by a suspension fork with 80mm travel.

It has a BMX bottom bracket and crankset, 25T/20T gear, BB7 brakes.


I'll swap the fork for a Reba with 80mm travel in a near future. It does not really fit the original concept, but I think the bike will be even more versatile.

I decided  to ride a Hope rear hub to be able to ride several gears, but this is not the case currently (it should not be a problem to put a mech on the frame).


Hope it can inspire you for your next build.


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