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157mm steel fork with 25x100 French thread side profile view
  • 157mm steel fork with 25x100 French thread side profile view
  • French threaded 25x100 fork steerer tube close-up measurement
  • Steel bicycle fork dropouts detailed view
  • Crown area of the 157mm vintage steel fork
  • Overall length measurement of the 157mm steerer tube
  • Thread condition detail on 25x100 bicycle fork
  • Vintage steel fork left blade profile
  • Vintage steel fork right blade profile
  • Front view of 700/650 steel fork
  • Rear view of 157mm steel fork crown
  • Inner spacing measurement of fork dropouts 100mm
  • Steel fork blades curvature profile
  • Close-up of threaded section on 157mm steerer
  • Under crown view of 700/650 steel fork
  • Fork steerer top bevel and inner diameter check
  • Right side dropout close-up 157mm fork
  • Left side dropout close-up 157mm fork
  • Steel vintage fork mid-section finish detail
  • Complete vertical profile of the 157mm steel fork
  • Steerer tube length verification with caliper
  • Thread pitch alignment detail on 25x100 fork
  • Overall cosmetic wear view of used steel fork
  • French standard bicycle fork ready for restoration

Steel Fork 157mm for 25×100 Frame 700C/650B D8

This vintage steel fork features a 157mm steerer tube with 25x100 French threading. Suitable for classic 700C or 650B configurations. The photos form part of the description.
€10.00
VAT included
Quantity
Last items in stock
1 Item

Description

This used classic front fork, engineered from durable steel, is designed to accommodate vintage bicycle builds using 700C or 650B wheel sizes. Featuring a traditional French steerer standard, it represents a precise replacement option for classic French touring bike or road frame assemblies. Please examine the provided images carefully to evaluate the exact cosmetic and mechanical condition of this component before purchase.

Key Technical Attributes

Engineered for legacy French standards, this fork is characterized by its specific dimensions and thread pitch, which differ from modern ISO components. This makes it highly sought after for authentic retro-restorations where modern parts cannot thread correctly.

  • Thread Standard: 25X100 French pattern, ideal for classic headsets.
  • Steerer Length: Total length falls within the 150 -160 mm range, measuring exactly 157mm.
  • Versatility: Can be integrated into configurations for both 700C road setups and traditional 650B touring bike frameworks.

Technical Specifications

  • Thread (fork): 25X100
  • Fork steerer (in mm): 150 -160

Restoration Compatibility

Finding components with this thread profile can be challenging. If your vintage frame requires a slightly different steerer tube dimension, you might also consider evaluating the 163mm Steel Fork for Bicycle Frame 25x100 or check the longer 186mm Steel Bicycle Fork 25x100 to achieve the exact headtube fitment your classic cycle demands.


FAQ

What is the threading standard on this fork?

This vintage steel fork features a traditional French thread pattern measuring 25x100, which is standard for classic European retro frames.

Can I use this fork with modern ISO headsets?

No, this fork requires a vintage French-threaded headset. Modern ISO or British-threaded headsets will not thread onto this steerer tube.

Is this fork compatible with 650B or 700C wheels?

Yes, this fork is designed to accommodate vintage 700C or 650B wheel sizes typically found on classic road and touring bike builds.

Product Details
1 Item
Used

Data sheet

Thread (fork)
25X100
Fork steerer (in mm)
150 -160
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