Sidi Genius Fit Carbon Mega (Wide) Shoes

Sidi Genius Fit Carbon Mega (Wide) Shoes
  • Color: Black
  • Color: White/Black/Red
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Can't find shoes wide enough? Check out Sidi’s Genius Fit Carbon Megas. Besides a wide last, the Genius Fit Megas feature the awesome fit, amazing function and sleek style that have made Genius shoes favorites of cyclists everywhere. You’ll love Sidi's incredibly durable and supportive Technomicro uppers with their glove-like feel, the carbon-injected Millennium 4 soles that make you feel like you're attached to the pedals for massive power transfer, and their easy-to-use Caliper buckle closures that let you maintain the perfect fit all ride long. Plus, your heels stay securely in place thanks to the molded plastic heel cups. Upgrade to Sidis and take your riding to the next level.

Fitting Yourself to Sidi Cycling Shoes

There is no substitute for a perfect fit. Your shoes are the most important contact point between you and your bike, affecting power, comfort, and providing that locked-in feeling of oneness with your bicycle.

Fitting tips
Try shoes on at the end of the day — your feet swell by at least a half-size as the day progresses, and as much as a full size on hot days.

Stand up. Feet expand under pressure — standing up will give you a better sense of how your shoes will fit under pedaling pressure.

Bring the socks and orthotics you ride with — they have a tremendous influence on foot volume and fit.

Be patient! Non-leather cycling shoes do not stretch over time — how they fit in the store will be how they fit, period. However, as the shoes warm up from body heat the uppers will become more pliable and conforming. Give your shoes at least 10 minutes to heat up, and readjust the closures to accurately gauge how they’ll feel mid-ride.

Foot measuring devices typically measure length and width only, and do not account for overall shape or foot volume. It’s imperative that you try on shoes a half-size larger and smaller than your measured size, for confirmation of proper fit.

How Sidis are sized
Sidi half sizes are 3mm longer, with slightly increased toe box volume. Full sizes are 6mm longer, with proportionally greater volume.

Standard-size Sidis roughly correspond to a D width on the industry-standard Brannock sizing scale.

Mega sizes are cut with more material throughout, and larger-volume heel cups. Mega sizes roughly correspond to an EE/EEE width on the Brannock sizing scale.

Narrow sizes are cut with less material throughout, and narrower, lower-volume heel cups. Narrow sizes roughly correspond to a B/C width on the Brannock sizing scale.

Women’s Sidis have a more tapered shape and lower volume than standard or narrow-width Sidis. Women with consistently wide or narrow feet, from heel to the forefoot may experience better fit in Sidi standard or narrow widths.

To mount your pedal cleats to your shoes (cleats are included with new pedals and sold separately), they must have matching bolt patterns. There are four configurations (diagram) used on cycling shoes, SPD-R, Look/SPD-SL, SPD and Speedplay. Road shoes feature one, two or even three of these. Off-road shoes usually use the SPD pattern. If you're unsure what pattern your shoes use, please ask us. We're here to help!

Sidi's Millennium 4 soles are a nylon matrix injected with carbon fiber for exceptional rigidity, lightness and durability. There are also scales for easy cleat alignment plus heel pads (replaceable) and toe pads for walking and durability.

Sidi's Soft Instep Closure System
Sidi's Soft Instep Closure System is anatomically shaped to spread pressure and provide a snug, secure, and ultra-comfortable fit.
Sidi's Caliper buckles make it super easy to fine-tune how tight your shoes are even when you're riding. Simply lift the Ratchet Levers to tighten, and press the Side Levers to loosen the fit or release the strap.
Fit Relievers are tiny cuts in the tongue that reduce bulk and keep it from rolling over and digging into your foot.

Part Numbers

Option UPC MPN Store SKU
Black / 40 2000000434438 14105201400
Black / 40.5 2000000434445 14105201405
Black / 41 2000000434452 14105201410
Black / 41.5 2000000434469 14105201415
Black / 42 2000000434476 14105201420 51112
Black / 42.5 2000000434483 14105201425
Black / 43 2000000434490 14105201430 35972
Black / 43.5 2000000434506 14105201435 86430
Black / 44 2000000434513 14105201440 47280
Black / 44.5 2000000434520 14105201445 69461
Black / 45 2000000434537 14105201450
Black / 45.5 2000000434544 14105201455 58652
Black / 46 2000000434551 14105201460 69431
Black / 46.5 2000000434568 14105201465 33826
Black / 47 2000000434575 14105201470 35960
Black / 48 2000000434582 14105201480
Black / 49 2000000434599 14105201490
Black / 50 2000000434605 14105201500
Black / 51 2000000434612 14105201510 84651
Black / 52 2000000434629 14105201520
White/Black/Red / 42 2000000434278 14105218420
White/Black/Red / 42.5 2000000434285 14105218425
White/Black/Red / 43 2000000434292 14105218430
White/Black/Red / 43.5 2000000434308 14105218435
White/Black/Red / 44 2000000434315 14105218440
White/Black/Red / 44.5 2000000434322 14105218445
White/Black/Red / 45 2000000434339 14105218450
White/Black/Red / 45.5 2000000434346 14105218455
White/Black/Red / 46 2000000434353 14105218460
White/Black/Red / 46.5 2000000434360 14105218465
White/Black/Red / 47 2000000434377 14105218470
White/Black/Red / 48 2000000434384 14105218480
White/Black/Red / 49 2000000434391 14105218490
White/Black/Red / 50 2000000434407 14105218500
White/Black/Red / 51 2000000434414 14105218510
White/Black/Red / 52 2000000434421 14105218520