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The Alpinestars Supertech R boot is the epitome of a high-performance racing boot, optimised with modern technologies and rigorous upgrades. Thanks to laser perforations, redesigned flex zones and an innovative biomechanical liner, it offers unparalleled comfort and protection. The durable microfibre construction combines excellent abrasion resistance with flexibility and ensures optimum grip on the bike. Worn by racing legends, the Supertech R sets new standards in terms of safety, performance and style.
The images may differ slightly from the actual product.
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Alpinestars Size Chart
Note: All measurements are body measurements in cm and are intended as a guide. Not all Alpinestars models are available in all sizes. Please check the selectable sizes directly on the product page.
Men's Apparel
Jackets, Pants, Suits and Sportswear
| Euro Size | US Size | US Pant Size | Chest (cm) | Waist (cm) | Hip (cm) | Thigh (cm) | Inseam (cm) | Outer Arm (cm) | Height (cm) |
|---|---|---|---|---|---|---|---|---|---|
| 40 | 30 | 24 | 78–82 | 64–68 | 79–83 | 48–49 | 71–72 | 49–50 | 150–156 |
| 42 | 32 | 26 | 82–86 | 68–72 | 83–87 | 50–51 | 73–74 | 51–52 | 157–163 |
| 44 | 34 | 28 | 86–90 | 72–76 | 87–91 | 52–53 | 75–76 | 53–54 | 164–167 |
| 46 | 36 | 30 | 90–94 | 76–80 | 91–95 | 54–55 | 77–78 | 55–56 | 168–171 |
| 48 | 38 | 32 | 94–98 | 80–84 | 95–99 | 56–57 | 79–80 | 57–58 | 172–175 |
| 50 | 40 | 34 | 98–102 | 84–88 | 99–103 | 58–59 | 81–82 | 59–60 | 176–179 |
| 52 | 42 | 36 | 102–106 | 88–92 | 103–107 | 60–61 | 83–84 | 61–62 | 180–183 |
| 54 | 44 | 38 | 106–110 | 92–96 | 107–111 | 62–63 | 85–86 | 63–64 | 184–187 |
| 56 | 46 | 40 | 110–114 | 96–100 | 111–115 | 64–65 | 87–88 | 65–66 | 188–191 |
| 58 | 48 | 42 | 114–118 | 100–104 | 115–119 | 66–67 | 89–90 | 67–68 | 192–195 |
| 60 | 50 | 44 | 118–122 | 104–108 | 119–123 | 68–69 | 89–90 | 67–68 | 192–195 |
| 62 | 52 | 46 | 122–126 | 108–112 | 123–127 | 70–71 | 91–92 | 69–70 | 196–199 |
| 64 | 54 | 48 | 126–130 | 112–116 | 127–131 | 72–73 | 91–92 | 69–70 | 196–199 |
Women's Apparel
Jackets, Pants, Suits and Sportswear
| Euro Size | International Size | US Size | US Pant Size | Chest (cm) | Bust (cm) | Waist (cm) | Hip (cm) | Thigh (cm) | Inner Leg (cm) | Outer Arm (cm) | Height (cm) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 36 | XS | 0 | 22 | 74–80 | 78–84 | 58–64 | 82–88 | 50–52.5 | 72–74.5 | 50–52.5 | 157–162.5 |
| 38 | S | 2 | 24 | 80–86 | 84–90 | 64–70 | 88–94 | 52.5–55 | 74.5–77 | 52.5–55.5 | 162.5–168.5 |
| 40 | M | 4 | 26 | 86–90 | 90–94 | 70–74 | 94–98 | 55–57 | 77–80 | 55.5–58 | 168.5–172.5 |
| 42 | L | 6 | 28 | 90–94.5 | 94–98.5 | 74–78.5 | 98–102.5 | 57–59.5 | 80–82 | 58–60 | 172.5–176.5 |
| 44 | XL | 8 | 30 | 94.5–99 | 98.5–103 | 78.5–83 | 102.5–107 | 59.5–61.5 | 82–83.5 | 60–61.5 | 176.5–180 |
| 46 | 2XL | 10 | 32 | 99–104 | 103–108 | 83–88 | 107–112 | 61.5–64 | 83.5–84.5 | 61.5–62.5 | 180–182.5 |
| 48 | 3XL | 12 | 34 | 104–109 | 108–113 | 88–93 | 112–117 | 64–66.5 | 84.5–86 | 62.5–64 | 182.5–185 |
| 50 | 4XL | 14 | 36 | 109–114 | 113–118 | 93–98 | 117–122 | 66.5–69 | 86–87 | 64–65 | 185–188 |
Note: The official women's measurement values are complete up to Euro 50 in the source. Larger sizes should be checked directly on the product page.
Youth Apparel
Kids and Youth Sizes
| Size | International Size | US Size | Age | Chest (cm) | Waist (cm) | Hip (cm) | Thigh (cm) | Inseam (cm) | Outer Arm (cm) | Height (cm) |
|---|---|---|---|---|---|---|---|---|---|---|
| 120 | S | 22 | 6 | 60.5–65.5 | 54–58 | 68–72 | 40–42 | 51.1–56.5 | 40–44 | 120–130 |
| 130 | M | 24 | 7–8 | 65.5–70.5 | 58–62 | 72–76 | 42–44 | 56.5–61.5 | 44–48 | 130–140 |
| 140 | L | 26 | 9–10 | 70.5–75.5 | 62–66 | 75–80 | 44–46 | 61.5–66.5 | 48–52 | 140–150 |
| 150 | XL | 28 | 11–12 | 75.5–80.5 | 66–70 | 80–84 | 46–48 | 66.5–71.5 | 52–56 | 150–160 |
Footwear and Boots
Men's Shoes – Monza, Tahoe, Primate
| EU | US | JPN |
|---|---|---|
| 35 | 3.5 | — |
| 36 | 4.5 | — |
| 37 | 5 | — |
| 38 | 6 | — |
| 39 | 7 | — |
| 40 | 7.5 | — |
| 41 | 8.5 | — |
| 42 | 9 | — |
| 43 | 10 | — |
| 44 | 11 | — |
| 45 | 11.5 | — |
| 46 | 12.5 | — |
| 47 | 13 | — |
| 48 | 14 | — |
| 49 | 14.5 | — |
| 50 | 15.5 | — |
Men's Shoes – General Models
| EU | US | JPN |
|---|---|---|
| 35.5 | 4 | 22 |
| 36 | 4.5 | 22.5 |
| 37 | 5 | 23 |
| 37.5 | 5.5 | 23.5 |
| 38 | 6 | 24 |
| 38.5 | 6.5 | 24.5 |
| 39 | 7 | 25 |
| 40 | 7.5 | 25.5 |
| 40.5 | 8 | 25.5 |
| 41 | 8.5 | 26 |
| 42 | 9 | 26.5 |
| 42.5 | 9.5 | 27 |
| 43 | 10 | 27.5 |
| 43.5 | 10.5 | 28 |
| 44 | 11 | 28.5 |
| 45 | 11.5 | 29.5 |
| 45.5 | 12 | 29.5 |
| 46 | 12.5 | 30 |
| 47 | 13 | 30.5 |
| 48 | 14 | 31.5 |
Road Racing / Touring Shoes and Boots
| EU | US | JPN |
|---|---|---|
| 36 | 3.5 | 22.5 |
| 37 | 4 | 23 |
| 38 | 5 | 24 |
| 39 | 6 | 25 |
| 40 | 6.5 | 25.5 |
| 41 | 7.5 | 26 |
| 42 | 8 | 26.5 |
| 43 | 9 | 27.5 |
| 44 | 9.5 | 28.5 |
| 45 | 10.5 | 29.5 |
| 46 | 11.5 | 30 |
| 47 | 12 | 30.5 |
| 48 | 12.5 | 31.5 |
| 49 | 13.5 | 32 |
| 50 | 14 | 33 |
MX Boots
| EU | US | JPN |
|---|---|---|
| 38 | 5 | 24 |
| 39 | 6 | 25 |
| 40.5 | 7 | 25.5 |
| 42 | 8 | 26.5 |
| 43 | 9 | 27.5 |
| 44.5 | 10 | 29 |
| 45.5 | 11 | 29.5 |
| 47 | 12 | 30.5 |
| 48 | 13 | 31.5 |
| 49.5 | 14 | 32.5 |
| 51 | 15 | 33.5 |
| 52 | 16 | 34.5 |
Women's Footwear
| EU | US | JPN |
|---|---|---|
| 37 | 6 | 23 |
| 38 | 7 | 24 |
| 39 | 8 | 25 |
| 41 | 9 | 26 |
| 42 | 10 | 26.5 |
Youth MX Boots
| EU | US | JPN |
|---|---|---|
| 28 | 10J | 17.5 |
| 29 | 11J | 18.5 |
| 30.5 | 12J | 19.5 |
| 32 | 13J | 20 |
| 33 | 1 | 21 |
| 34 | 2 | 21.5 |
| 35.5 | 3 | 22.5 |
| 37 | 4 | 23 |
| 38 | 5 | 24 |
| 39 | 6 | 25 |
| 40.5 | 7 | 25.5 |
| 42 | 8 | 26.5 |
Gloves
Men's Gloves
| Size | Hand Circumference (cm) |
|---|---|
| S | 17.8–20.3 |
| M | 20.3–21.6 |
| L | 21.6–22.9 |
| XL | 22.9–24.1 |
| 2XL | 24.1–25.4 |
| 3XL | 25.4–27.9 |
Women's Gloves
| Size | Hand Circumference (cm) |
|---|---|
| XS | 16.5–17.8 |
| S | 17.8–19 |
| M | 19–20.3 |
| L | 20.3–21.6 |
| XL | 21.6–22.9 |
Helmets
Head Circumference
| Size | Head Circumference (cm) |
|---|---|
| XS | 53–54 |
| S | 55–56 |
| M | 57–58 |
| L | 59–60 |
| XL | 61–62 |
| 2XL | 63–64 |
Tip: For helmets, measure the head circumference at the widest point above the eyebrows. For gloves, measure around the hand behind the knuckles, excluding the thumb.