Alpinestars SP-X BOA Men's Street Boots
- SP-X boots are a sleek sport boot designed to fit under tech riding pants and provide superior walking capability
- Optimized for the sport and sport touring rider, the SP-X are compact, mid-height boots with premium levels of protection and comfort on and off the bike
- The upper is constructed from a combination of Rideknit material and knitted mesh, plus seamless thermo-welded parts
- The lower features a TPU heel counter, toe slider, and the Alpinestars Transversal Protection Frame (TPF) on the sole, allowing for high levels of protection against impacts and any bending or twisting
- Additionally, the sole also features an all-new design with an asymmetric back heel to facilitate the rider's natural stride and promote off-bike stability
- For protection, the SP-X has an integrated shin impact protector, dual-density ankle discs, plus TPU shift pad and toe slider reinforcement
- For comfort, the knitted areas on the front and back flex points offer great freedom of movement, while the PU midsole with integrated double cushioned heel compound and removable OrthoLite insock, provide great walking comfort
- In and out is facilitated by a medial zip combined with the BOA speed lace system for compact and precise closure
- SP-X boots are perfect for those sport riders looking for coverage and protection but without the full race boot, over the pant look
- Colors: Black, Black / Silver
- Sizes: 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48
- SKU: 3401-1052, 3401-1053, 3401-1054, 3401-1055, 3401-1056, 3401-1057, 3401-1058, 3401-1059, 3401-1060, 3401-1061, 3401-1062, 3401-1063, 3401-1064, 3401-1065, 3401-1066, 3401-1067, 3401-1068, 3401-1069, 3401-1070, 3401-1071, 3401-1072, 3401-1073






















New or Brand New - Brand new item in original packaging (original manufacturer's warranty may apply).
Refurbished - Professionally restored and in perfect working condition. Original packaging may be missing or slightly damaged.
Used - Item has seen limited use but remains in good working condition. May show some limited signs of wear with small scratches or cosmetic blemishes. May arrive with damaged packaging or be repackaged.
Refurbished, Without Tags - Same as refurbished. Item may arrive with mising labels or tags.
Refurbished, Last Call - Same as refurbished. Last call or closeout item.
HOW TO MEASURE
A | CHEST
Measure around the fullest part, under the armpits, keeping the tape horizontal.
B | WAIST
Measure around the natural waist line, inline with the navel, keeping the tape horizontal.
C | HIP
Measure around the fullest part of your hips, about 20cm below waist line, keeping the tape horizontal.
D | THIGH
Measure around the thigh just below the crotch, keeping the tape horizontal.
E | INSEAM
Stand against a wall, ask someone else to measure from the crotch to the bottom of your leg.
F | ARM LENGTH
Measure from shoulder (Humerus) to wrist.
G | HEIGHT
Stand against a wall, ask someone else to measure from the oor to the top of your head, keeping the tape vertical.
MEN'S APPAREL SIZE CHART (INCHES)
Euro Size | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 |
International Size | XXS | XXS | XS | XS | S | S | S | M | M | L | L | XL | L | XL | XL | XXL | XXL | XXL | 3XL | 3XL | 4XL |
U.S. Size | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 |
U.S. Pant Size | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 |
A | Chest (Inches) | 30 3/4- 32 1/4 | 32 1/4- 33 7/8 | 33 7/8- 35 3/8 | 35 3/8- 37 | 37 - 38 5/8 | 38 5/8- 40 1/8 | 40 1/8- 41 3/4 | 41 3/4- 43 1/4 | 43 1/4- 44 7/8 | 44 7/8- 46 1/2 | 46 1/2- 48 | 48 - 49 5/8 | 49 5/8- 51 1/8 |
B | Waist (Inches) | 25 1/4- 26 3/4 | 26 3/4- 28 3/8 | 28 3/8- 29 7/8 | 29 7/8- 31 1/2 | 31 1/2- 33 1/8 | 33 1/8- 34 5/8 | 34 5/8- 36 1/4 | 36 1/4- 37 3/4 | 37 3/4- 39 1/4 | 39 1/4- 41 | 41 - 42 1/2 | 42 1/2- 44 1/8 | 44 1/8- 45 5/8 |
C | Hip (Inches) | 31 1/8- 32 5/8 | 32 5/8- 34 1/4 | 34 1/4- 35 7/8 | 35 7/8- 37 3/8 | 37 3/8- 39 | 39 - 40 1/2 | 40 1/2- 42 1/8 | 42 1/8- 43 3/4 | 43 3/4- 45 1/4 | 45 1/4- 46 7/8 | 46 7/8- 48 3/8 | 48 3/8- 50 | 50 - 51 5/8 |
D | Thigh (Inches) | 19 3/8- 19 5/8 | 19 5/8- 20 1/8 | 20 1/2- 20 7/8 | 21 1/4- 21 5/8 | 22 - 22 1/2 | 22 7/8- 23 1/4 | 23 5/8- 24 | 24 3/8- 24 3/4 | 25 1/4- 25 5/8 | 26 - 26 3/8 | 26 3/4- 27 1/8 | 27 1/2- 28 | 28 3/8- 28 1/2 |
E | Inseam (Inches) | 28 - 28 3/4 | 28 3/4- 29 1/8 | 29 1/2- 29 7/8 | 30 3/8- 30 3/4 | 31 1/8- 31 1/2 | 31 7/8 - 32 1/4 | 32 5/8 - 33 1/8 | 33 1/2 - 33 7/8 | 34 1/4 - 34 5/8 | 35 - 35 3/8 | 35 - 35 3/8 | 35 7/8 - 36 1/4 | 35 7/8 - 36 1/4 |
F | Outer Arm (Inches) | 19 1/4 - 20 1/8 | 20 1/8 - 20 3/4 | 20 7/8 - 21 1/4 | 21 5/8 - 22 | 22 1/2 - 22 7/8 | 23 1/4 - 23 5/8 | 24 - 24 3/8 | 24 3/4 - 25 1/4 | 25 5/8 - 26 | 26 3/8 - 26 3/4 | 26 3/8 - 26 3/4 | 27 1/8 - 27 1/2 | 27 1/8 - 27 1/2 |
G | Height (Inches) | 4'11" - 5'1" | 5'2" - 5'4" | 5'4" - 5'5 | 5'6" - 5'7" | 5'7" - 5'8" | 5'9" - 5'10" | 5'11" - 6'" | 6" - 6'2" | 6'2" - 6'3" | 6'3" - 6'5" | 6'3" - 6'5" | 6'5" - 6'6" | 6'5" - 6'6" |
MEN'S APPAREL SIZE CHART (CM)
Euro Size | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 |
International Size | XXS | XXS | XS | XS | S | S | S | M | M | L | L | XL | L | XL | XL | XXL | XXL | XXL | 3XL | 3XL | 4XL |
U.S. Size | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 |
U.S. Pant Size | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 |
A. Chest (cm) | 78 - 82 | 82 - 86 | 86 - 90 | 90 - 94 | 94 - 98 | 98 - 102 | 102 - 106 | 106 - 110 | 110 - 114 | 114 - 118 | 118 - 122 | 122 - 126 | 126 - 130 |
B. Waist (cm) | 64 - 68 | 68 - 72 | 72 - 76 | 76 - 80 | 80 - 84 | 84 - 88 | 88 - 92 | 92 - 96 | 96 - 100 | 100 - 104 | 104 - 108 | 108 - 112 | 112 - 116 |
C. Hip (cm) | 79 - 83 | 83 - 87 | 87 -91 | 91 - 95 | 95 - 99 | 99 - 103 | 103 - 107 | 107 - 111 | 111 - 115 | 115 - 119 | 119 - 123 | 123 - 127 | 127 - 131 |
D. Thigh (cm) | 48 - 49 | 50 - 51 | 52 - 53 | 54 - 55 | 56 - 57 | 58 - 59 | 60 - 61 | 62 - 63 | 64 - 65 | 66 - 67 | 68 - 69 | 70 - 71 | 72 - 73 |
E. Inseam (cm) | 71 - 72 | 73 - 74 | 75 - 76 | 77 - 78 | 79 - 80 | 81 - 82 | 83 - 84 | 85 -86 | 87 - 88 | 89 - 90 | 89 - 90 | 91 - 92 | 91 - 92 |
F. Outer Arm (cm) | 49 - 50 | 51 - 52 | 53 - 54 | 55 - 56 | 57 - 58 | 59 - 60 | 61 - 62 | 63 - 64 | 65 - 66 | 67 - 68 | 67 - 68 | 69 - 70 | 69 - 70 |
G. Height (cm) | 150 - 156 | 157 - 163 | 164 - 167 | 168 - 171 | 172 - 175 | 176 - 179 | 180 - 183 | 184 - 187 | 188 - 191 | 192 - 195 | 192 - 195 | 196 - 199 | 196 - 199 |
Europe | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 |
USA | 3.5 | 4 | 5 | 6 | 6.5 | 7.5 | 8 | 9 | 9.5 | 10.5 | 11.5 | 12 | 12.5 | 13.5 | 14 |
Japan | 22.5 | 23 | 24 | 25 | 25.5 | 26 | 26.5 | 27.5 | 28.5 | 29.5 | 30 | 30.5 | 31.5 | 32 | 33 |
A | CHEST
Measure around the chest under the armpits, keeping the tape horizontal.
B | BUST
Measure around the fullest part of the bust, keeping the tape horizontal.
C | WAIST
Measure around the natural waist line, inline with the navel, keeping the tape horizontal.
D | HIP
Measure around the fullest part of your hips, about 20cm below waist line, keeping the tape horizontal.
E | THIGH
Measure around the thigh just below the crotch, keeping the tape horizontal.
F | INSEAM
Stand against a wall, ask someone else to measure from the crotch to the bottom of your leg.
G | ARM LENGTH
Measure from shoulder (Humerus) to wrist.
H | HEIGHT
Stand against a wall, ask someone else to measure from the floor to the top of your head, keeping the tape vertical.
Euro Size | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 |
International Size | XXS | XXS | XS | XS | S | M | L | L | XL | XL | XXL | XXL | XXL | 3XL | 3XL |
U.S. Size | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 |
U.S. Pant Size | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 |
A. Chest (Inches) | 29 1/8 - 30 3/4 | 30 3/4 - 32 1/4 | 32 1/4 - 33 7/8 | 33 7/8 - 35 3/8 | 35 3/8 - 37 | 37 - 38 5/8 | 38 5/8 - 40 1/8 | 40 1/8 - 41 3/4 | 41 3/4 - 43 1/4 | 43 1/4 - 44 7/8 |
B. Bust (Inches) | 30 3/4 - 32 1/4 | 32 1/4 - 33 7/8 | 33 7/8 - 35 3/8 | 35 3/8 - 37 | 37 - 38 5/8 | 38 5/8 - 40 1/8 | 40 1/8 - 41 3/4 | 41 3/4 - 43 1/4 | 43 1/4 - 44 7/8 | 44 7/8 - 46 1/2 |
C. Waist (Inches) | 22 7/8 - 24 3/8 | 24 3/8 - 26 | 26 - 27 1/2 | 27 1/2 - 29 1/8 | 29 1/8 - 30 3/4 | 30 3/4 - 32 1/4 | 32 1/4 - 33 7/8 | 33 7/8 - 35 3/8 | 35 3/8 - 37 | 37 - 38 5/8 |
D. Hip (Inches) | 32 1/4 - 33 7/8 | 33 7/8 - 35 3/8 | 35 3/8 - 37 | 37 - 38 5/8 | 38 5/8 - 40 1/8 | 40 1/8 - 41 3/4 | 41 3/4 - 43 1/4 | 43 1/4 - 44 7/8 | 44 7/8 - 46 1/2 | 46 1/2 - 48 |
E. Thighs (Inches) | 19 5/8 - 20 1/8 | 20 1/2 - 20 7/8 | 21 1/4 - 21 5/8 | 22 - 22 1/2 | 22 7/8 - 23 1/4 | 23 5/8 - 24 | 24 3/8 - 24 3/4 | 25 1/4 - 25 5/8 | 26 - 26 3/8 | 26 3/4 - 27 1/8 |
F. Inner Legs (Inches) | 28 3/8 - 28 3/4 | 29 1/8 - 29 1/2 | 29 7/8 - 30 3/8 | 30 3/4 - 31 1/8 | 31 1/2 - 31 7/8 | 32 1/4 - 32 5/8 | 33 1/8 - 33 1/2 | 33 1/8 - 33 1/2 | 33 7/8 - 34 1/4 | 33 7/8 - 34 1/4 |
G. Outer Legs (Inches) | 19 5/8 - 20 1/8 | 20 1/2 - 20 7/8 | 21 1/4 - 21 5/8 | 22 - 22 1/2 | 22 7/8 - 23 1/4 | 23 5/8 - 24 | 24 3/8 - 24 3/4 | 24 3/8 - 24 3/4 | 25 1/4 - 25 5/8 | 25 1/4 - 25 5/8 |
H. Height (Inches) | 5'2"- 5'3" | 5'4"- 5'5" | 5'5"- 5'6" | 5'7"- 5'8" | 5'8"- 5'9" | 5'10"- 5'11" | 5'11"- 6'" | 5'11"- 6'" | 6'1"- 6'2" | 6'1"- 6'2" |
Europe | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 |
USA | 5 | 6 | 7 | 8 | 8.5 | 9 | 10 | 11 | 11.5 |
Japan | 22.5 | 23 | 24 | 25 | 25.5 | 26 | 26.5 | 27.5 | 28 |
Measurement | Letter Sizing | Numeric Sizing |
---|---|---|
2 1/8" - 2 5/8" | XS | 7 |
2 5/8" - 3 1/8" | SM | 8 |
3 1/8" - 3 5/8" | MD | 9 |
3 5/8" - 4 1/8" | LG | 10 |
4 1/8" - 4 5/8" | XL | 11 |
4 5/8" - 5 1/8" | XXL | 12 |
5 1/8" - 5 5/8" | XXXL | 13 |
Off-Road Boots
US | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
EU | 38 | 39 | 40.5 | 42 | 43 | 44.5 | 45.5 | 47 | 48 | 49.5 | 51 | 52 |
Road Boots
US | 3.5 | 4 | 5 | 6 | 6.5 | 7.5 | 8 | 9 | 9.5 | 10.5 | 11.5 | 12 | 12.5 | 13.5 | 14 |
EU | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 |
Leather Jacket
Size | A| Chest | B| Waist | C| Hip | D| Height | ||||
---|---|---|---|---|---|---|---|---|
Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | |
46 | 36 1/4 in | 92 cm | 29 7/8 in | 76 cm | 36 1/4 in | 92 cm | 5' 9" | 174 cm |
48 | 37 3/4 in | 96 cm | 31 1/2 in | 80 cm | 37 3/4 in | 96 cm | 5'10" | 177 cm |
50 | 39 3/8 in | 100 cm | 33 1/8 in | 84 cm | 39 3/8 in | 100 cm | 5' 11" | 180 cm |
52 | 41 in | 104 cm | 34 5/8 in | 88 cm | 41 in | 104 cm | 6' | 183 cm |
54 | 42 1/2 in | 108 cm | 36 1/4 in | 92 cm | 42 1/2 in | 108 cm | 6' 1" | 186 cm |
56 | 44 1/8 in | 112 cm | 37 3/4 in | 96 cm | 44 1/8 in | 112 cm | 6' 3" | 189 cm |
58 | 45 5/8 in | 116 cm | 39 3/8 in | 100 cm | 45 5/8 in | 116 cm | 6' 4" | 192 cm |
60 | 47 1/4 in | 120 cm | 41 in | 104 cm | 47 1/4 in | 120 cm | 6' 5" | 195 cm |
62 | 48 3/4 in | 124 cm | 42 1/2 in | 108 cm | 48 3/4 in | 124 cm | 6' 6" | 198 cm |
64 | 50 1/4 in | 128 cm | 44 in | 112 cm | 50 1/4 in | 128 cm | 6' 6" | 198 cm |
Leather Suit Jacket
Size | A| Chest | B| Waist | C| Hip | D| Inseam | E| Height | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
US | EU | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters |
36 | 46 | 36 1/4 in | 92 cm | 29 7/8 in | 76 cm | 36 1/4 in | 92 cm | 30 in | 76.2 cm | 5' 9" | 174 cm |
38 | 48 | 37 3/4 in | 96 cm | 31 1/2 in | 80 cm | 37 3/4 in | 96 cm | 32 in | 81.3 cm | 5'10" | 177 cm |
40 | 50 | 39 3/8 in | 100 cm | 33 1/8 in | 84 cm | 39 3/8 in | 100 cm | 34 in | 86.4 cm | 5' 11" | 180 cm |
42 | 52 | 41 in | 104 cm | 34 5/8 in | 88 cm | 41 in | 104 cm | 34 in | 86.4 cm | 6' | 183 cm |
44 | 54 | 42 1/2 in | 108 cm | 36 1/4 in | 92 cm | 42 1/2 in | 108 cm | 36 in | 91.4 cm | 6' 1" | 186 cm |
46 | 56 | 44 1/8 in | 112 cm | 37 3/4 in | 96 cm | 44 1/8 in | 112 cm | 36 in | 91.4 cm | 6' 3" | 189 cm |
48 | 58 | 45 5/8 in | 116 cm | 39 3/8 in | 100 cm | 45 5/8 in | 116 cm | 38 in | 96.5 cm | 6' 4" | 192 cm |
50 | 60 | 47 1/4 in | 120 cm | 41 in | 104 cm | 47 1/4 in | 120 cm | 38 in | 96.5 cm | 6' 5" | 195 cm |
- | 62 | 48 3/4 in | 124 cm | 42 1/2 in | 108 cm | 48 3/4 in | 124 cm | 40 in | 101.5 cm | 6' 6" | 198 cm |
- | 64 | 50 1/4 in | 128 cm | 44 in | 112 cm | 50 1/4 in | 128 cm | 40 in | 101.5 cm | 6' 6" | 198 cm |
Measurement | Letter Sizing | Numeric Sizing |
---|---|---|
2 1/8" - 2 5/8" | XS | 7 |
2 5/8" - 3 1/8" | SM | 8 |
3 1/8" - 3 5/8" | MD | 9 |
3 5/8" - 4 1/8" | LG | 10 |
4 1/8" - 4 5/8" | XL | 11 |
4 5/8" - 5 1/8" | XXL | 12 |
5 1/8" - 5 5/8" | XXXL | 13 |
Off-Road Boots
US | 6 | 7 | 8 | 9 | 10 |
EU | 37 | 38 | 39 | 41 | 42 |
Road Boots
US | 5.5 | 6 | 7 | 8 | 8.5 | 9.5 | 10 | 11 |
EU | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 |
Leather Jackets
Size | A| Bust | B| Waist | C| Hip | D| Height | |||||
---|---|---|---|---|---|---|---|---|---|
US | EU | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters |
0 | 36 | 31 1/2 in | 80 cm | 23 1/2 in | 60 cm | 33 in | 84 cm | 5' 3" | 160 cm |
2 | 38 | 33 in | 84 cm | 25 1/4 in | 64 cm | 34 3/4 in | 88 cm | 5' 4" | 163 cm |
4 | 40 | 34 3/4 in | 88 cm | 26 3/4 in | 68 cm | 36 1/4 in | 92 cm | 5' 5" | 166 cm |
6 | 42 | 36 1/4 in | 92 cm | 28 1/4 in | 72 cm | 37 3/4 in | 96 cm | 5' 7" | 169 cm |
8 | 44 | 37 3/4 in | 96 cm | 30 in | 76 cm | 39 1/4 in | 100 cm | 5' 8" | 172 cm |
10 | 46 | 39 1/4 in | 100 cm | 31 1/2 in | 80 cm | 41 in | 104 cm | 5' 9" | 175 cm |
12 | 48 | 41 in | 104 cm | 33 1/4 in | 84 cm | 42 1/2 in | 108 cm | 5' 10" | 178 cm |
14 | 50 | 41 1/2 in | 108 cm | 34 3/5 in | 88 cm | 44 in | 112 cm | 5' 11" | 181 cm |
Leather Suit
Size | A| Bust | B| Waist | C| Hip | D| Inseam | E| Height | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
US | EU | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters |
0 | 36 | 31 1/2 | 80 cm | 23 1/2 | 60 cm | 33 | 84 cm | 30 1/4 | 77 cm | 5' 3" | 160 cm |
2 | 38 | 33 in | 84 cm | 25 1/4 in | 64 cm | 34 3/4 in | 88 cm | 31 in | 79 cm | 5' 4" | 163 cm |
4 | 40 | 34 3/4 in | 88 cm | 26 3/4 in | 68 cm | 36 1/4 in | 92 cm | 31 in | 79 cm | 5' 5" | 166 cm |
6 | 42 | 36 1/4 in | 92 cm | 28 1/4 in | 72 cm | 37 3/4 in | 96 cm | 32 in | 81 cm | 5' 7" | 169 cm |
8 | 44 | 37 3/4 in | 96 cm | 30 in | 76 cm | 39 1/4 in | 100 cm | 32 in | 81 cm | 5' 8" | 172 cm |
10 | 46 | 39 1/4 in | 100 cm | 31 1/2 in | 80 cm | 41 in | 104 cm | 32 3/4 in | 83 cm | 5' 9" | 175 cm |
12 | 48 | 41 in | 104 cm | 33 1/4 in | 84 cm | 42 1/2 in | 108 cm | 33 1/2 in | 85 cm | 5' 10" | 178 cm |
14 | 50 | 41 1/2 in | 108 cm | 34 3/5 in | 88 cm | 44 in | 112 cm | 34 1/4 in | 87 cm | 5' 11" | 181 cm |
*
Sizing information is provided by the manufacturer and does not guarantee a perfect fit.