Pedal threads hide in the most awkward spot on a bike, and standard wrenches don't have the leverage or clearance to deal with them properly. The Park Tool PW-4 Pedal Wrench addresses both problems with a 15mm opening on a handle long enough to break loose pedals that have been torqued down and forgotten about for years. The thin-profile head slips into the narrow gap between crankarm and pedal body where adjustable wrenches and standard box wrenches simply won't fit.

The 14" handle length isn't arbitrary. Pedal threads seize over time from galvanic corrosion between steel spindles and aluminum crankarms, and shorter tools either round off the flats or force you into awkward body positions to generate enough torque. The PW-4's length lets you apply force in a controlled manner, standing over the bike with your weight behind the wrench rather than yanking at an angle. For installations, that same leverage helps you hit proper torque without a separate torque wrench for most applications.

The head design deserves attention. Park Tool forged the 15mm opening with parallel faces that maintain full contact with pedal flats throughout the rotation arc. Stamped wrenches tend to flex under load, which rounds both the wrench and the pedal over time. The forged construction here eliminates that flex, and the head thickness is calibrated specifically for pedal clearance rather than adapted from a general-purpose wrench design.... Read More