Designed in Flanders, the heartland of cycling. Born from pavé, brutally steep climbs and harsh conditions. Race It!

Fast Fork

The state of the art 4ZA Fast fork brings bicycle aerodynamics to a new level. Our main goal being to reduce the drag generated by a spinning wheel and to eliminate turbulence from the front brake.

Both of these problems are a thing of the past, when using the wind-cheating 4ZA Fast fork. By integrating the front brake in the rear leg of the Split-fork, the brake is not only shielded from the wind, it also increases the performance of the Split-fork since the drag is now neutralized from axle to fork crown.

The 4za FAST fork is compatible with all road frames that feature a 1 1/2" lower bearing and 1 1/8" upper bearing.

Fork crow race diameter : 39,8mm

Steerer tube diameter : 28,6mm

Steerer tube length : 300mm

Fork weight : 505g

Fork rake : 44m

Due to the tapered steerer tube the minimum required head tube length is 70mm

Available in 3 colors

  • Black with fast logo (FKMIBSZA001)
  • Black (FKMIBSZA002)
  • White (FKMIBSZA003)

The FAST Fork is delivered with

  • micro adjuster & spring (ready assembled)
  • 4za Quick
  • brake pad holders with brake pad for aluminum rim
  • instruction manual


Size : 0,5 Mb

4ZA test riders

Cirrus saddle test (10/09/2013)

After the Stratos saddle I switched to the Cirrus saddle. First I tried the 130mm saddle for a couple of weeks and then switched to the 145mm.

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Stratos saddle test (05/06/2013)

I tested the 4ZA Stratos saddles during the last 3 weeks. I got the saddles from the 4ZA product manager Yannick Christiaens.

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Life at the Cape Epic (by Ron) (21/03/2013)

Day one : prologue

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Getting Nervous? (10/03/2013)

Hi all,

2 days untill departure and 6 days untill the start.
Heading out to South Africa with the 4ZA team soon.

Read more ...