Thread or Fastener Repair

Pedal Passion, Brisbane's Premier Destination for Custom Built Bikes.

Precision Tooling to Restore Components

This specialised service is designed to restore damaged, rounded, or cross‑threaded fittings on a wide range of bicycle components. With precision tooling and extensive experience, we are also able to extract snapped or seized bolts without harming the surrounding material.

Common Cases

Common areas where thread or fastener repair may be required include

  • Crank (pinch bolt or chainring bolt)
  • Handlebar (computer mount thread)
  • Frame (front or rear derailleur hanger and others)
  • Bottle cage rivet
  • Pedal thread
  • Thru axle thread
 

Riders Ask
Can a stripped pedal thread on a carbon crank be repaired, or is replacement necessary?

Stripped pedal threads on carbon cranks represent one of the more anxiety-inducing problems for cyclists, given the cost of high-end carbon cranks. The good news is that repair is often possible, but the approach depends on the extent of damage and the crank construction. Understanding your options helps you make informed decisions and potentially save hundreds of dollars.

Determining Repairability:

  • Minor thread damage: often repairable
  • Moderate damage: possibly repairable with inserts
  • Severe damage: replacement likely necessary
  • Carbon damage: replacement required

Inspection Process:

  • Remove pedal and clean threads thoroughly
  • Inspect with magnification or bright light
  • Check for carbon delamination or cracking
  • Determine if only aluminium insert is damaged or carbon too
How bad is damage to my carbon crank arm?

At Pedal Passion we will thoroughly assess the damage and advise best options. As a general rule:

Minor Damage:

  • Slightly deformed threads
  • Minor aluminum galling
  • Cross-threading that's not severe
  • Surface damage only

Moderate Damage:

  • Significant thread deformation
  • Partially stripped threads
  • Damaged threads over portion of length
  • Aluminium insert still intact but threads compromised

Severe Damage:

  • Completely stripped threads
  • Damaged threads over full length
  • Aluminium insert loose or damaged
  • Possible carbon damage
Repair or replace? What factors should I take into account?

Crank Value:

  • High-end cranks: repair makes more sense economically
  • Mid-range cranks: borderline, consider overall condition
  • Older cranks: replacement may be more practical

Overall Crank Condition:

  • Near end of service life: consider replacement
  • Newer cranks: repair extends useful life
  • Other components worn: maybe full crank replacement better

Usage and Intent:

  • High-performance use: ensure repair is high quality
  • Casual riding: more repair options acceptable
  • Racing: ensure reliability—professional repair or replacement

Not Sure what your bike needs? No problem!
Just book a free general assessment and bring your bike in