Bicycle Pedal Extenders for 9/16 Inch Cranksets: Widen your bike pedal stance by 7/8"

FGT Motorsport

PDL-EXT-9/16-21

Each kit includes a set of pedal extenders that can be used on any standard 9/16" bicycle crank. Included is one left and one right pedal extender. The pedal extender is an adapter that threads into the crankset (in place of the original pedal) and spaces the position of your bicycle pedals outward by a full 7/8". Your pedals then thread into the female end of the pedal extender and you're on your way! Please see product images for more information. 

  • Each pedal extender is CNC machined from solid billet Chrome-Moly for increased strength and fatigue resistance

  • Black Oxide coated for increased corrosion protection

  • Includes one Right and one Left pedal extender. Each pedal extender is marked with an "R" or an "L" to indicate orientation.

Why Use Pedal Extenders?

With the advancement of modern bicycles, knee injuries are becoming increasingly more rare. A majority of the force that is created in the knee joint acts through the quadriceps muscles to extend and contract the knee joint for a full cyclical repetition. Bicycling is considered so advantageous for the strengthening of the muscles around the knee that many sufferers of advanced knee injuries will take to cycling to improve strength and mobility in the knee joint. Common knee injuries from impact sports (basketball, running, football, etc) include tearing of the ACL, PCL, LCL, MCL and patellar tendon.

That being said, there is still a risk for severe knee injury while biking if the proper biomechanics are not used for each pedal stroke. This can result an in overuse syndrome that when used repetitively, can severely irritate and degrade connecting tissue in the knee. Overuse can result in knee disorders such as ilial-tibial (IT) band syndrome, hamstring tendonitis, and patellar tendonitis. When performed properly, cycling can work to increase knee strength and actually help these injuries.

There are several factors that are involved in the biomechanics of a proper cycling stroke. A proper bike fit to the rider can be characterized by several factors including saddle position, seat height, cleat/foot position, toe-out vs. toe-in, stem height/length and the Q factor. The Q factor distance is measured as the distance from one side of the crank arm to the other side of the crank arm. This Q factor directly effects the pedal to pedal spacing, and in turn, the spacing between your left and right foot when riding. The Q factor MUST BE OPTIMIZED for a given rider’s flexibility, riding goals, bike geometry, and individual biomechanics. Another factor that is often overlooked is foot pronation (ankle rolling inward) and supination (ankle rolling outward) which can be directly affected by the Q factor (pedal to pedal spacing).

As a result, keeping the knee in a neutral riding position is incredibly important for proper loading of the knee joint while cycling. If the knee spacing is too small, the ankle is in constant pronation which can put undue stress on the medial side of the knee joint. Continued overuse in this configuration can result in degeneration overtime.

If you are a cyclist and you frequently experience lateral knee pain, there is a very good chance that the proper pedal spacing (Q factor) has not been set for the given rider. When a bicycle pedal spacing is used that is too narrow, lateral knee pain can present as pain on the outside of the leg/knee from the foot all the way up the leg. Since road bikes tend to use a narrower bottom bracket, these types of bikes are the biggest offenders when it comes to too small of a Q factor.

Experiment: Take a set in a chair without thinking much about the placement of your knees. You’ll notice that your knees will want to gravitate to a natural “knees out” sitting position. This can also be seen when squatting with heavy weight. When squatters experience knee pain, they are often told to try the knees out approach to relieve this stress. The same principle applies to cycling; The neutral position for the knees is wider spacing and point slightly out. With our pedal extenders, there is no guess work! Try out a pair today and have your cleats properly adjusted to your biomechanics. If you don’t notice a difference in knee pain after one ride contact us for a full money back guarantee!

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