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163mm steel fork 25x100 thread for vintage 700C and 650B bicycle frames
  • 163mm steel fork 25x100 thread for vintage 700C and 650B bicycle frames
  • Close-up of 25x100 French thread on 163mm vintage steel steerer tube
  • Dropout alignment and tire clearance detail on 163mm steel bicycle fork
  • Side profile of 163mm classic steel fork for touring bike builds
  • Front view of vintage steel fork showing crown clearance and brake mount
  • Fork steerer measurement of 163mm steel vintage fork
  • Detailed view of the 25x100 thread section on the steel fork
  • Under-crown detail on 163mm vintage steel touring bike fork
  • Rear view of fork crown and steerer tube junction
  • Left dropout detail showing condition of axle slots
  • Right dropout detail on second-hand steel bicycle fork
  • Steerer tube diameter measurement on 25x100 vintage fork
  • Overall length measurement of the 163mm vintage steel fork
  • Crown race seat area on the 163mm steel bicycle fork
  • Axle spacing measurement on 100mm vintage front fork
  • Surface condition check on curved steel fork blades
  • Mid-blade view of classic steel bicycle fork
  • Brake hole mounting area on vintage steel fork crown
  • Threading detail displaying overall wear and integrity
  • Top view of the hollow steerer tube of the 163mm steel fork

Steel Fork 163mm Steerer for 25×100 Frame 700C/650B

This second-hand 163mm steel bicycle fork is engineered for vintage frames with a 25x100 threading, compatible with 700C and 650B wheels. Detailed photographs form an integral part of this description, showing its authentic, pre-owned condition.
€10.00
VAT included
Quantity
Last items in stock
1 Item

Description

This second-hand bicycle fork is forged from resilient classic steel, offering a period-correct replacement part for mid-to-late 20th-century retro builds. Measuring 163mm in total steerer length, this fork utilizes standard French threading dimensions, making it highly compatible with French-manufactured road frames and touring bikes from brands like Peugeot, Motobécane, or Gitane.

High-Compatibility Vintage Bicycle Fork

Whether you are rebuilding a vintage touring bike or a traditional city bike, maintaining thread compatibility is crucial. This classic component features a 25x100 threading system, which fits securely into vintage headsets without risking thread damage. The fork blades are designed to clear both 700C (622mm ISO) and 650B (584mm ISO) wheelsets, allowing versatility in tire clearance and fender mounting. Detailed photographs form an integral part of this description, displaying its actual cosmetic state, surface patina, and structural integrity. Please review these images carefully to assess the condition of the dropouts and thread lanes before final assembly.

For custom configurations requiring slightly different steerer dimensions, you might also consider our 157mm Steel Bicycle Fork 25x100 D8 or check the slightly taller Steel Bicycle Fork 169mm R11 to find the exact match for your headtube profile.

Technical Specifications

  • Thread (fork): 25X100
  • Fork steerer (in mm): 160 -170 (measured at 163mm)

FAQ

What threading standard does this fork use?

This fork utilizes a vintage French 25x100 thread configuration, standard on older French frames.

What wheel sizes are compatible with this steel fork?

It is designed to accommodate vintage 700C (622mm) and 650B (584mm) wheelsets.

What is the exact length of the steerer tube?

The total length of the fork steerer tube is 163mm, fitting headtubes designed for a 160mm to 170mm range.

Are there any major structural defects or cracks?

There are no major defects. Any cosmetic wear or minor surface oxidation can be seen in the photos.

Product Details
1 Item
Used

Data sheet

Thread (fork)
25X100
Fork steerer (in mm)
160 -170
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