How To Remove Cycling Pedals: A Complete Step-by-Step Mechanical Guide

Removing cycling pedals requires understanding left-hand and right-hand threading rules alongside the correct mechanical leverage to avoid stripping crankarm threads. With a standard 15mm pedal wrench or an 8mm hex key, you can successfully unthread both pedals in under ten minutes by rotating them toward the rear wheel.

Pre-Operation & Equipment Checklist

Replacing or servicing bicycle pedals is a fundamental maintenance task that requires precision, proper tools, and an understanding of drivetrain mechanics. Failing to use the correct leverage or ignoring thread orientation can result in severely damaged aluminum or carbon crankarms, turning a minor swap into an expensive replacement job. Proper preparation ensures safety, protects component integrity, and makes the extraction process seamless.

• Essential gear, tools, and materials:
  
  
  • 15mm thin-profile open-end pedal wrench (standard wrenches are often too thick to fit between the pedal body and crankarm)
  • 8mm or 6mm internal hex (Allen) wrench (for pedals that lack wrench flats and require backend access)
  • Penetrating fluid such as liquid wrench or WD-40 Specialist (for heavily seized or rusted steel-on-aluminum interfaces)
  • Clean shop rags and biodegradable degreaser
  • Fresh anti-seize compound or waterproof bicycle grease for reinstallation
• Mandatory prerequisite knowledge and standards:
  
  
  • Correct identification of drive-side (right) versus non-drive-side (left) components
  • Recognition of standard threads versus reverse threads (left-hand threading)
• Estimated budget and duration benchmarks:
  
  
  • Time investment: 5 to 15 minutes per bicycle
  • Tool acquisition cost: 15 to 30 USD for a dedicated long-handled pedal wrench

Step-by-Step Pedal Extraction Workflow

Step 1: Positioning the Drivetrain and Chain Safety

Shift your bicycle chain onto the largest chainring at the front. This simple action acts as a critical safety buffer, protecting your hands, knuckles, and forearms from sharp chainring teeth if your wrench suddenly slips during high-torque unthreading. Mount the bicycle securely in a repair stand or lean it firmly against a stable wall with the drive-side facing outward.

Pro-Tip: If you do not have a work stand, shift the bike into its highest gear and rest the saddle and handlebars on the ground, ensuring the pedals remain completely clear of the floor for unobstructed tool access.

Step 2: Identifying Thread Direction and Rotation Rules

Examine both pedals to determine their respective thread directions. The right pedal (drive-side, featuring the chainrings) utilizes a standard right-hand thread, meaning you turn it counter-clockwise to loosen. The left pedal (non-drive-side) utilizes a left-hand (reverse) thread, meaning you must turn it clockwise to loosen.

Warning: Attempting to force a pedal in the wrong direction will immediately gall and destroy the steel pedal spindle threads inside your aluminum crankarm. Always verify the rotation rule before applying body weight to your wrench.

Step 3: Positioning the Wrench for Optimal Mechanical Advantage

Rotate the crankarm so it is roughly parallel to the ground, pointing forward toward the front wheel, or angled slightly upward. Place your 15mm pedal wrench onto the pedal flats. Position the wrench handle so that it points toward the rear wheel of the bicycle. This precise alignment ensures that when you push downward on the wrench handle, you are naturally turning the spindle in the correct loosening direction (counter-clockwise for the right side, clockwise for the left side).

Step 4: Applying Controlled Leverage to Break the Seal

Grasp the pedal wrench firmly with one hand while holding the opposing crankarm with your other hand to stabilize the drivetrain and prevent the crankset from spinning freely. Apply a sharp, firm downward pressure on the wrench handle. If the pedal spindle is seized due to galvanic corrosion—common when steel pedal axles meet alloy crankarms—tap the end of the wrench firmly with a rubber mallet or the palm of your hand to shock the threads loose.

Step 5: Unthreading and Cleaning the Crankarm Threads

Once the initial torque lock is broken, continue spinning the pedal spindle by hand in the loosening direction until it detaches completely from the crankarm. Remove both pedals and take a clean shop rag to wipe away old grease, grit, and road debris from the internal crankarm threads. Inspect the threads thoroughly for signs of stripping, cross-threading, or metal shavings before preparing for new pedal installation.

Pedal Interface Specifications & Tool Compatibility

Common Mechanical Failures & Field Fixes

• Seized Pedal Spindle Stuck in Crankarm

  
  
  
  • Root Cause: Galvanic corrosion occurring between a steel pedal axle and an aluminum crankarm due to a lack of grease during the initial installation.
  • Actionable Fix: Apply a generous amount of penetrating fluid directly to the back of the pedal eyelet where the threads meet the crankarm. Allow the chemical to sit for 15 to 30 minutes, then use a long-handled pedal wrench or slide a piece of hollow pipe over the wrench handle to significantly increase your leverage.

• Stripped Crankarm Threads During Removal

  
  
  
  • Root Cause: Forcing the pedal spindle in the incorrect rotational direction, effectively shearing the softer aluminum threads.
  • Actionable Fix: Do not attempt to force a new pedal into damaged threads. Take the crankarm to a professional local bike shop to have a qualified mechanic install a threaded stainless-steel thread repair insert (such as a Helicoil system) or replace the crankarm entirely.

• Rounding of 15mm Wrench Flats

  
  
  
  • Root Cause: Using a thick, low-quality, or worn-out adjustable crescent wrench instead of a dedicated, hardened-steel thin-profile pedal wrench.
  • Actionable Fix: Switch immediately to an internal 8mm hex wrench accessed from the backside of the crankarm spindle, provided your pedal model features an internal hex socket. If internal hex is unavailable, use locking pliers (Vise-Grips) clamped tightly onto the damaged flats.

Frequently Asked Questions

Which way do you turn bicycle pedals to take them off?

The right pedal loosens by turning it counter-clockwise (toward the rear wheel when the crank points forward), while the left pedal loosens by turning it clockwise (also toward the rear wheel). A helpful memory trick is that both pedal threads tighten toward the front of the bike and loosen toward the rear.

Can I use a standard wrench instead of a pedal wrench?

Standard open-end wrenches are typically too thick to slide into the narrow gap between the pedal body and the crankarm. Forcing a thick wrench can mar your crank surface, and you risk rounding the pedal flats due to poor surface contact. Always use a dedicated thin-profile bicycle pedal wrench.

Why are bicycle pedals threaded differently on each side?

Pedals are threaded with opposing directions to counteract the natural biomechanical forces of pedaling, known as precession. If both pedals featured standard right-hand threads, the frictional forces of pedaling would constantly act to unscrew the left pedal, causing it to fall out while riding.

What should I apply to the threads before putting new pedals on?

Always apply a thin layer of waterproof bicycle grease or anti-seize compound to the male threads of the new pedals prior to installation. This protective barrier stops moisture infiltration, prevents galvanic welding between dissimilar metals, and guarantees effortless removal during your next service interval.

Master Your Bicycle Maintenance Today

Upgrade your home mechanic workflow by pairing proper component removal techniques with professional-grade grease and torque specifications for long-lasting drivetrain health. Explore our comprehensive library of advanced drivetrain guides to keep your bicycle running smoothly on every ride.