Shoe FAQ's

  • WHAT IS TECHNOMICRO?

  • Technomicro is a composite microfiber material created from strands that are so fine that each one is less than one thousandth the thickness of silk. These fibers act like natural leather skin, but with the advantage of better strength, softer texture and lighter weight. Technomicro is also water-repellent, quick-drying, breathable and permeable to water vapor, making it an ideal material for shoe uppers. It is abrasion- and mildew-resistant, easier to clean than leather and resists stretching and deterioration from atmospheric agents.

  • DOES TECHNOMICRO STRETCH?

    Technomicro does not stretch, but it will begin to conform to a foot as it warms up, thereby giving the sensation of stretching. Do not buy a SIDI shoe in a size too small because you anticipate that it will stretch.
  • ARE ALL SIDI BUCKLES AND STRAPS INTERCHANGEABLE?

    All side mounted buckles share the same attachment screw. The ratchet straps specific to each buckle fit interchangeably into the slot in the outside of the soft instep closure system. So there is no problem retrofitting an older SIDI shoe with the new SIDI Caliper buckle, just make sure to replace the ratchet strap at the same time.
  • DO SIDI SHOES REQUIRE MAINTENANCE?

    DO’S
    • Clean with a damp sponge. • Store in a cool, dry and well-ventilated place. • Fill with newspaper to absorb any dampness and to keep the shape. • If the shoes are not damp or wet after use, clean them with a soft brush. • If the shoes are equipped with levers or other precision closures, clean them carefully and regularly apply a silicone-based or similar lubricant. • Regularly check and tighten all screws on your shoes, especially the heelpads and SRS® Sole Replacement System®.

    DON’TS
    • Do not wash in washing machine or spray clean. • Do not use strong washing powder or abrasive brushes. • When drying, never place near or next to heaters, fire or other heating elements (the use of detergents and rapid drying may cause excessive hardening or cracks in the materials).
  • WHAT IF I HAVE A HIGH ARCH/INSTEP (OR A LOW ARCH)?


    The Soft Instep Closure System® is adjustable from the inside of the shoe in order to center the EVA pad over a high or low instep. Pull the Soft Instep Closure System® slightly away from the shoe and firmly yank it back and forth. (or move it side to side while pushing it firmly back into the shoe) After adjusting trim any excess strap extending towards the crank arm (inside) of the shoe. In rare cases people who have both a larger foot (usually larger than a 50 Mega) and a very high instep may need a strap extender made by SIDI called the High Instep Adaptor®.
  • DO TOE SPIKES COME WITH SIDI SHOES?

    Toe spikes do not come with SIDI shoes, however they are available through an authorized SIDI Dealer for ~$15.00 MSRP.
  • ARE ALL SIDI BUCKLES AND STRAPS INTERCHANGEABLE?
    All side mounted buckles share the same attachment screw. The ratchet straps specific to each buckle fit interchangeably into the slot in the outside of the soft instep closure system. So there is no problem retrofitting an older SIDI shoe with the new SIDI Caliper buckle, just make sure to replace the ratchet strap at the same time.
  • ARE ALL SIDI BUCKLES AND STRAPS INTERCHANGEABLE?
    All side mounted buckles share the same attachment screw. The ratchet straps specific to each buckle fit interchangeably into the slot in the outside of the soft instep closure system. So there is no problem retrofitting an older SIDI shoe with the new SIDI Caliper buckle, just make sure to replace the ratchet strap at the same time.
  • ARE RECEPTACLE PLATES COVERED UNDER WARRANTY?

    It is possible to strip out or cross thread cleat receptacle plates during cleat installation and occasionally in older MTB shoes the receptacle plates become rusty. Receptacle plates are not covered under warranty, however they are replaceable. We recommend taking the shoe to a shoe repair store. Incorrectly replacing a receptacle plate can lead to an uncomfortable lump under the ball of the foot. • Remove the insole and lift the tongue to open the upper as much as possible. • If the shoe has a Tecno II or Tecno 3 buckle, be sure to completely open the closure by unhooking the line from the non-ratcheting anchor(s). • Use a sharp cutting tool to cut along the dotted line in the innersole. • From the inside, carefully lift the slightly loosened innersole and, with a screwdriver from the outside, push the metal inserts out and substitute them. • Position the innersole as before. Sidi may not be held responsible for inappropriate use which may damage the innersole.
  • CAN SIDI VELCRO® STRAPS BE TRIMMED?

    Yes, you can trim a SIDI VELCRO® strap.
  • HOW ARE SIDI SHOES SIZED?

    The standard models are considered a C to an E width. The Mega models are considered an EE to an EEE width. The Narrow models are considered a B to a C width. Occasionally a cyclist who does not have an exceptionally wide foot but who uses a high volume orthotic and/or has a very high instep will be more comfortable in a Mega shoe. Check out our online how-to guide on properly fitting SIDIs to your feet.
  • HOW IS A SIDI WOMEN’S SHOE DIFFERENT?

    SIDI Women’s shoes are built on a woman’s specific last, following standard woman’s tapered foot shape: • The forefoot is proportionally wider but still lower volume. • The heel is narrower.
  • WHAT IS DIFFERENT ABOUT A HALF SIZE?

    SIDI Half sizes are constructed on a last that is 3mm longer and proportionately higher volume.
  • HOW DO I SIZE/FIT SIDI SHOES?

    The best time to try on any shoe is at the end of the day. Ask to have the length and width of your feet measured and be open minded about the results. • If you are not currently in a SIDI or you own a SIDI that is more than 5 years old you may not be the SIDI size you think you should be (this is especially true for women’s shoes) • You may not realize you have a wide foot and may be wearing a regular width shoe that is too long in order to get the width right. In that case it is always better to switch to a wide model in the correct length. • Make sure to bring the types of socks you would like to be able to wear as well as any orthotics you typically use. • Spend enough time in the shoe to let the Technomicro warm up. • Ask for help centering the soft instep closure system over your instep or adjusting the heel retention device. (If your shoe has one.) If possible try a half size up or down for comparison. If you’re in-between sizes, think about how much your feet typically swell on a bike ride.
  • HOW CAN I TELL WHAT SIZE OR CUT MY CURRENT SIDI SHOES ARE?

    Every SIDI shoe (except the Triathlon models) from the 2002 model year forward is stamped with the size and last. (Mega, Narrow or Women’s shoe) The stamp is usually found on the tongue. For example, a Woman’s model in size 40.5 would be stamped 40 ½ W, with the “W” indicating that it is a Women’s model. (in older shoes this may be an L) If you had a Mega model, the stamp would be 40 ½ M, and if you had a Narrow model, the stamp would be 40 ½ S, with the “S” indicating that it is a SLIM model. Ignore the size on the sole, which is the closest whole size, meaning that a 42, a 42.5 women’s and a 42 mega would all have 42 stamped on the sole.
  • WHICH SHOES HAVE REPLACEABLE LUGS?

    The Drako, Dragon 2 Carbon SRS® and Spider SRS® models have the SRS® Replaceable Sole System. The SRS® soles on the Drako, Dragon 2 Carbon SRS® and Spider SRS® are not interchangeable.
  • DO I NEED AN ADAPTOR PLATE TO MAKE SIDI SHOES WORK WITH MY PEDALS?

    If you have a SIDI shoe made in the last several years you don’t need a SIDI adaptor plate for most pedals. • We recommend the SIDI Crank Brothers® Reinforcement Plate for use with Crank Brothers® Pedals. • Consult www.speedplay.com for the most current shim and compatibility information. Carbon Lite and Full Carbon Soles take the 1-F / 1-R shims, Carbon Composite and Millennium 3 soles take the 4-F / 4-R shims. • SIDI SPD® adaptor plates do not match the curvature of the Millennium 3® sole, and SIDI cannot be responsible for their use with this sole. If you prefer to use a mountain bike pedal on your road bike we recommend you purchase a MTB shoe such as a Dominator 5. The D5 will not only be correctly configured for your cleat but provides excellent walkability during a bike tour. • Previous generations of SIDI shoes did use an adaptor plate, and some of these are still available. If you have questions ask your shop to e-mail a picture of your sole and pedal to our customer service department. • SP Carbon Soles do not require the use of 3-hole base plates when used with Speedplay pedals, for 4mm less stack height and better pedaling and aerodynamic efficiency.
  • I NEED TO REPLACE MY HEEL PAD



    SIDI currently provides 3 replacement heel pads. Check to see if your shoe has a small rivet at the heel.


    • If you have a shoe with the Millennium 3 or Carbon Composite Sole (such as the Genius 5.5 Carbon Composite from 2009 or the Genius 5 Pro Carbon from 2009 you will have a small rivet at the heel. Use the heel pad on the left that dips down around the rivet.










    • If you have a shoe with a Full Carbon Sole (such as the Ergo 2, Genius 6.6 and T2.6 from 07-09) or most pre-2009 models such as a Genius 5 there is no rivet and you will use the heel pad on the right that doesn’t dip down at the top. You may need to use a clippers to remove the nubs in the back of the heel pad. (Designed for use with the Full Carbon Sole)
  • THE SCREWS OF MY BUCKLES CAME LOOSE. CAN I USE LOCTITE?
    Although occasionally you might experience the screws loosening, do NOT use LOCTITE. Even if you place the liquid thread lock on the threads only, the volatiles will cause the plastic of the buckle to dissolve and break. Screws with pre-applied thread lock are available N/C.
  • WHAT HAPPENS IF THE SCREWS THAT COME WITH MY PEDALS ARE TOO LONG FOR MY SIDI SHOES?

    Sidi shoes have a very low stack height and in some cases the screws provided by the pedal manufacturer may be too long. Screwing them in all the way could damage the shoe’s innersole and result in an uncomfortable lump under the ball of the foot. Pay attention when installing the cleat. Depending on the sole, screws must not penetrate beyond the base of your cleat more than 6-7mm into the sole. Use of the wrong length screws could damage your shoes and void the warranty. If necessary use the screws provided with SIDI Mountain Bike shoes, and have your shop contact us about screws specifically made for SIDI road shoes.
  • WHAT IF MY SHOES (CLEATS) CREAK?

    Try lubricating the following areas: • Screw threads that actually secure the cleats to the shoe: Grease the threads. • Screw Receptacles: These are the metal nuts that are recessed into the shoes. Since you cannot extract them, you will need to drip in a lubricant, such as linseed oil, that will bathe the internal area and form a film (it will actually congeal with time). • Adaptor Plates and Adaptor Receptacle: Sometimes plastic on plastic is the problem. Try dripping wax between all the plastic to plastic surfaces. If that does not do it, try silicon spray or linseed oil here also.
  • THE “FISHING LINE” OF MY TECNO OR TECNO 2 BUCKLES IS BROKEN

    Often the line breaks at one of the knots inside. Remove the buckle and follow the line to where it stops inside—one of two places. If in fact a knot broke or became untied, then just retie a new knot. If the line broke in the middle somewhere, you can replace the line with readily available “weed-wacker” monofilament line available at garden and hardware stores. The thickness of the line is 0.12mm or 0.3”. And finally, new buckles can be purchased through your local SIDI dealers. If you are repeatedly having this breakage problem, you might live in a high sand content area and the sand granules are cutting your line frequently OR you just might need to lubricate the buckles more frequently.
  • WHAT IS SIDI'S WARRANTY, AND HOW DO I HANDLE WARRANTY RETURNS?

    For the full scoop on SIDI's warranty and return policy, please visit the SIDI Warranty page.