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Defender 20 MTB Shoe

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Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Trail ready — Sidi Defender 20

Blending the best features of a comfortable hiking shoe and an XC and trail riding shoe, the Sidi Defender 20 Shoe offers the perfect grip in a variety of conditions. Striking a balance between remaining incredibly stiff yet lightweight, the Defender 20 is the perfect shoe for those times when you're caught in a steep hike-a-bike section of trail. The tread of the Defender 20 gives you the comfort you need while walking without compromising on power transfer when on the bike.

Sidi's Politex uppers are constructed of several different thin layers to create a supportive and durable material designed to stand up against the debris you face out on the trails.

Impressively supportive soles are just one detail that makes Sidi shoes stand out. The Defender shoe uses Sidi's Outdoor Sole. The grippy rubber sole not only adapts to variable trail conditions but keeps you stable while on foot. Clipping back into your pedals after traipsing through muddy off-bike sections, now comes more quickly. The Defender's tread pattern sheds the mud blocking you from clipping in, so you can be on your way much easier.


  • The shoe for all your mountain adventures
  • Sidi's Outdoor Sole is grippy and adaptable to trail conditions, keeping you stable and secure.
  • The Politex uppers are super durable and tough
  • The Tecno-3 closure cinches down by the millimeter, allowing you the perfect fit for optimal comfort and performance
  • Your foot isn't going anywhere with Sidi's reinforced heel cap.

Free Exchanges: This product qualifies for free exchanges within the first 60 days after order. We'll cover the shipping both ways for US customers if you need a different size and/or color of this product. Returned product must be in new condition with all labels and packaging. Free exchanges apply only for product in stock or available for backorder.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. Cleats may have been mounted leaving minor marks on the soles. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Upper: Politex Suede Effect, mesh 


Footwear Closure: Tecno 3 Buckle System 


Outsole: Sidi Outdoor Sole 


Cleat Compatibility: 2-bolt 


Manufacturer Warranty: 1 year 


Discipline: trail/enduro/XC 


Width: Regular 

Black - 41

Mfg PartNum: SMS-D20-BKBK-410 

Black - 42

Mfg PartNum: SMS-D20-BKBK-420 

Black - 43

Mfg PartNum: SMS-D20-BKBK-430 

Black - 44

Mfg PartNum: SMS-D20-BKBK-440 

Black - 45

Mfg PartNum: SMS-D20-BKBK-450 

Black - 46

Mfg PartNum: SMS-D20-BKBK-460 

Black - 47

Mfg PartNum: SMS-D20-BKBK-470