Sidi Crossair HD Billy Bolt Special Edition Motocross Boots
The Sidi Crossair HD Billy Bolt is no ordinary motocross boot – it sets new standards. Developed in close collaboration with hard enduro pro Billy Bolt, it is the world's first boot designed specifically for hard and super enduro. The combination of an internal, glass fibre-reinforced exoskeleton and the usual robust Sidi construction ensures maximum stability and protection – and all at an astonishingly low weight. The directly stitched rubber sole is based on the design of trial boots and provides exceptional grip – whether on the footrests or on rough terrain. This makes the Crossair HD the ideal companion for the most demanding enduro applications. It is the result of uncompromising development and Billy Bolt's high standards – with an unmistakable look and genuine Sidi quality.
Features:
Developed in collaboration with hard enduro pro Billy Bolt
World's first boot designed specifically for hard and super enduro
Lightweight construction with high stability
Glass fibre reinforced internal exoskeleton for maximum support and safety
Rubber sole directly stitched to the upper material – inspired by trial boots
Excellent grip on the footrests and off-road
Optimised for the toughest conditions in hard enduro
The result of continuous development and close collaboration with Billy Bolt
Combines Billy Bolt's style with Sidi quality and experience
Size table for Sidi Crossair HD Billy Bolt Special Edition Motocross Boots:
Measurements in:
emzFcMoto.product.sizeTableUnitCm
EU Size
US Size
UK Size
Foot Length (cm)
36
4
3.5
22.5
37
4.5
4
23.2
38
5.5
5
23.8
39
6
5.5
24.5
40
7
6.5
25.2
41
8
7.5
25.8
42
8.5
8
26.5
43
9.5
8.5
27.2
44
10
9.5
27.8
45
11
10.5
28.5
46
11.5
11
29.2
47
12.5
12
29.8
48
13.5
12.5
30.5
49
14
13.5
31.2
50
15
14.5
31.8
How to measure your height:
1
Foot length
Measure your foot length from the heel to the tip of your longest toe. Stand barefoot on a sheet of paper and distribute your weight evenly. Mark the very back of your heel and the tip of your longest toe, then measure the distance between those two points. Make sure you are standing straight, because the foot expands slightly under weight.
Reviews
1 out of 1 ratings
Average rating of 5 out of 5 stars
5 out of 5 stars
Rate this product!
Share your experiences with other customers.
Log in
Could not translate review. Please try again later
1 review
February 12, 2026 2:04 AM
Rated 5 out of 5 stars
very good design
The design is truly beautiful.
Although it’s a bit disappointing that there is no upper strap—so for someone like me with thicker calves, relying only on Velcro for fastening feels somewhat lacking—the design alone more than makes up for everything.
78538c459bdbdeb550383c321aabd290Sidi Crossair HD Billy Bolt Special Edition Motocross Bootshttps://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-SID-52396.vhttps://www.fc-moto.com/thumbnail/4f/57/9d/1755847811/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-sid-52396-v-main-article-figure-1_800x800.jpeg?ts=1770646168InStock464USDUSDSID-52396.v78538c459bdbdeb550383c321aabd290SALELeatherSummerSID-52396.vBootsPolyesterMotocrossMenMotorcycleBootshttps://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=1770630043{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetrue0500000001false180c9a54f20c78040b23cf93b8eff874Sidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.954https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-46-SID-52396-46-057https://www.fc-moto.com/thumbnail/95/d1/79/1755847843/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-46-sid-52396-46-057-figure-1_400x400.jpeg?ts=1771453950InStockSID-52396-46-057180c9a54f20c78040b23cf93b8eff874https://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004346SALELeatherCarryoverSummerSID-52396.v46BootsPolyesterMotocrossMenWhite, Pink, YellowMotorcycleBoots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetrue1862178243d292b424cf3c2c212946bfSidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.957https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-41-SID-52396-41-057https://www.fc-moto.com/thumbnail/19/67/fa/1755847821/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-41-sid-52396-41-057-figure-1_400x400.jpeg?ts=1771453946InStockSID-52396-41-0571862178243d292b424cf3c2c212946bfhttps://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004341SALELeatherCarryoverSummerSID-52396.vBootsPolyesterMotocrossMenWhite, Pink, Yellow41MotorcycleBoots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetrue229edfb36d3b055efac6280e269c352eSidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.9512https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-48-SID-52396-48-057https://www.fc-moto.com/thumbnail/9c/c3/36/1755847852/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-48-sid-52396-48-057-figure-1_400x400.jpeg?ts=1771453954InStockSID-52396-48-057229edfb36d3b055efac6280e269c352ehttps://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004348SALELeatherCarryoverSummerSID-52396.vBootsPolyester48MotocrossMenWhite, Pink, YellowMotorcycleBoots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetrue36c521b3a017659f360b143ad5539934Sidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.957https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-49-SID-52396-49-057https://www.fc-moto.com/thumbnail/fe/6d/6e/1755847857/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-49-sid-52396-49-057-figure-1_400x400.jpeg?ts=1771453955InStockSID-52396-49-05736c521b3a017659f360b143ad5539934https://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004349SALELeatherCarryoverSummerSID-52396.v49BootsPolyesterMotocrossMenWhite, Pink, YellowMotorcycleBoots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetrue37383c4a5c2fe352ec150a7d5aa118c7Sidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.955https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-39-SID-52396-39-057https://www.fc-moto.com/thumbnail/03/71/3e/1755847812/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-39-sid-52396-39-057-figure-1_400x400.jpeg?ts=1771453945InStockSID-52396-39-05737383c4a5c2fe352ec150a7d5aa118c7https://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004339SALELeatherCarryoverSummerSID-52396.v39BootsPolyesterMotocrossMenWhite, Pink, YellowMotorcycleBoots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetrue689531570355acaac204791ab6906decSidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.9525https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-43-SID-52396-43-057https://www.fc-moto.com/thumbnail/5c/22/a9/1755847830/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-43-sid-52396-43-057-figure-1_400x400.jpeg?ts=1771453948InStockSID-52396-43-057689531570355acaac204791ab6906dechttps://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004343SALELeatherCarryoverSummerSID-52396.vBootsPolyesterMotocrossMenWhite, Pink, YellowMotorcycle43Boots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetruea2774908faf773422183c2ad3337ef6cSidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.958https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-50-SID-52396-50-057https://www.fc-moto.com/thumbnail/13/60/bd/1755847861/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-50-sid-52396-50-057-figure-1_400x400.jpeg?ts=1771453956InStockSID-52396-50-057a2774908faf773422183c2ad3337ef6chttps://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004350SALELeatherCarryoverSummer50SID-52396.vBootsPolyesterMotocrossMenWhite, Pink, YellowMotorcycleBoots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetruea92bf3868ec8c0b636b8d125cbc27602Sidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.9525https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-45-SID-52396-45-057https://www.fc-moto.com/thumbnail/c1/60/61/1755847839/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-45-sid-52396-45-057-figure-1_400x400.jpeg?ts=1771453949InStockSID-52396-45-057a92bf3868ec8c0b636b8d125cbc27602https://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004345SALELeatherCarryoverSummerSID-52396.vBootsPolyesterMotocrossMenWhite, Pink, YellowMotorcycle45Boots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetrueaab4cd762bcc1c090e92e9aa69a9b90dSidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.950https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-40-SID-52396-40-057https://www.fc-moto.com/thumbnail/44/98/72/1755847817/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-40-sid-52396-40-057-figure-1_400x400.jpeg?ts=1771453945OutOfStockSID-52396-40-057aab4cd762bcc1c090e92e9aa69a9b90dhttps://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004340SALELeatherCarryoverSummerSID-52396.v40BootsPolyesterMotocrossMenWhite, Pink, YellowMotorcycleBoots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}falsefalsec54314580bda8be60dfc231807853e82Sidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.9523https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-44-SID-52396-44-057https://www.fc-moto.com/thumbnail/21/ef/3a/1755847834/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-44-sid-52396-44-057-figure-1_400x400.jpeg?ts=1771453949InStockSID-52396-44-057c54314580bda8be60dfc231807853e82https://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004344SALELeatherCarryoverSummerSID-52396.v44BootsPolyesterMotocrossMenWhite, Pink, YellowMotorcycleBoots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetruedcfe38133bf04d6ba5d482597632ba28Sidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.950https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-47-SID-52396-47-057https://www.fc-moto.com/thumbnail/c4/26/b4/1755847848/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-47-sid-52396-47-057-figure-1_400x400.jpeg?ts=1771453951OutOfStockSID-52396-47-057dcfe38133bf04d6ba5d482597632ba28https://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004347SALELeatherCarryoverSummer47SID-52396.vBootsPolyesterMotocrossMenWhite, Pink, YellowMotorcycleBoots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}falsefalseedaa245c8b67b9ea49365f130453532dSidi Crossair HD Billy Bolt Special Edition Motocross Boots503.96599.9517https://www.fc-moto.com/en-us/p/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-42-SID-52396-42-057https://www.fc-moto.com/thumbnail/20/dd/4c/1755847826/sidi-crossair-hd-billy-bolt-special-edition-motocross-boots-42-sid-52396-42-057-figure-1_400x400.jpeg?ts=1771453947InStockSID-52396-42-057edaa245c8b67b9ea49365f130453532dhttps://www.fc-moto.com/media/04/29/d6/1770479243/markenlogo-sidi.svg?ts=177063004342SALELeatherCarryoverSummerSID-52396.vBootsPolyesterMotocrossMenWhite, Pink, YellowMotorcycle42Boots{"extensions":[],"displayParent":true,"mainVariantId":null,"configuratorGroupConfig":[],"displayCheapestVariant":false,"displayMainVariant":false}truetrue/SALE %/SALE %/Motocross clothing sale/Motorcycle clothing/Motorcycle clothing/Men’s motorcycle clothing/Motorcycle clothing/Men’s motorcycle clothing/Motocross clothing/Motorcycle clothing/Men’s motorcycle clothing/Motocross clothing/Boots/SALE %/Motocross clothing sale/Motocross boots sale/SALE %/Motorcycle boots & motorcycle shoes sale/Brands/Motorcycle clothing/Men’s motorcycle clothing/Motorcycle boots & motorcycle shoes/Motorcycle clothing/Men’s motorcycle clothing/Motorcycle boots & motorcycle shoes/Motocross & enduro boots/Brands/Sidi/Brands/Sidi/Motocross boots/SALE %/Motorcycle boots & motorcycle shoes sale/Motocross & enduro boots sale/Moto/c/sale/motocross-clothing-sale/c/motorcycle-clothing/men-s-motorcycle-clothing/motocross-clothing/boots/c/sale/motocross-clothing-sale/motocross-boots-sale/c/sale/motorcycle-boots-motorcycle-shoes-sale/c/motorcycle-clothing/men-s-motorcycle-clothing/motocross-clothing/b/brands/c/motorcycle-clothing/men-s-motorcycle-clothing/motorcycle-boots-motorcycle-shoes/motocross-enduro-boots/b/brands/sidi/motocross-boots/c/motorcycle-clothing/men-s-motorcycle-clothing/c/sale/c/sale/motorcycle-boots-motorcycle-shoes-sale/motocross-enduro-boots-sale/c/motorcycle-clothing/b/brands/sidi/c/motorcycle-clothing/men-s-motorcycle-clothing/motorcycle-boots-motorcycle-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<p><strong>Sidi Crossair HD Billy Bolt Special Edition Motocross Boots</strong></p> <p>The Sidi Crossair HD Billy Bolt is no ordinary motocross boot – it sets new standards. Developed in close collaboration with hard enduro pro Billy Bolt, it is the world's first boot designed specifically for hard and super enduro. The combination of an internal, glass fibre-reinforced exoskeleton and the usual robust Sidi construction ensures maximum stability and protection – and all at an astonishingly low weight. The directly stitched rubber sole is based on the design of trial boots and provides exceptional grip – whether on the footrests or on rough terrain. This makes the Crossair HD the ideal companion for the most demanding enduro applications. It is the result of uncompromising development and Billy Bolt's high standards – with an unmistakable look and genuine Sidi quality.</p> <p><strong>Features:</strong></p><ul> <li>Developed in collaboration with hard enduro pro Billy Bolt</li> <li>World's first boot designed specifically for hard and super enduro</li> <li>Lightweight construction with high stability</li> <li>Glass fibre reinforced internal exoskeleton for maximum support and safety</li> <li>Rubber sole directly stitched to the upper material – inspired by trial boots</li> <li>Excellent grip on the footrests and off-road</li> <li>Optimised for the toughest conditions in hard enduro</li> <li>The result of continuous development and close collaboration with Billy Bolt</li> <li>Combines Billy Bolt's style with Sidi quality and experience</li> </ul>579.9551
