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Alpinestars Tech-Air MX Airbag System Men's Off-Road Body Armor
$699.95
Alpinestars Tech-Air MX Airbag System Men's Off-Road Body Armor-2701
COLOR:
SIZE:

Alpinestars Tech-Air MX Airbag System Men's Off-Road Body Armor

Developed over a decade, the Tech-Air MX System is Alpinestars' most advanced off-road airbag for motocross and supercross. Featuring AI-powered crash detection and four selectable Riding Modes, it provides CE Category II airbag protection compliant with EN1621?4:2013, covering shoulders, chest, and back with inflation in ~40 ms. Integrated Nucleon PLASMA back protector, breathable stretch-mesh vest, LED display, and up to 30-hour battery enhance comfort, control, and uptime.

  • Multiple Riding Modes: Default MX Mode plus MX RACE, ENDURO, and RALLY profiles selectable via the Tech-Air App or onboard controls, so protection adapts to your discipline, pace, and terrain
  • AI Crash Detection: Machine-learning tuned with elite MX/SX ride data to recognize crash dynamics accurately, helping deliver protection when it matters while minimizing nuisance inflations
  • Active Airbag Response: Rapid inflation engages during the crash sequence to absorb impact energy before major contact, supporting confidence over jumps, rhythm sections, and rough terrain
  • System Versatility: Low-profile chassis designed to be worn over or under MX gear; single gas inflator enables one deployment and is easily replaceable where permitted to reduce downtime
  • Battery Life: Up to 30 hours of ride time per charge, with a 1-hour quick charge adding around 8 hours, keeping you covered through race weekends and training days
  • Quick Activation: Automatic power-on/off via the left buckle sensor for simple, glove-friendly operation in the paddock and on the grid
  • Bluetooth Connectivity: Tech-Air App support for status checks, Riding Mode management, and wireless diagnostics to keep your Tech-Air MX System ready to ride
  • Tech-Air MX System delivers comprehensive airbag coverage for shoulders, chest, and back
  • Provides over four times the impact protection of passive armor when deployed
  • CE-certified Airbag Category II, compliant with EN 1621-4:2013 standards
  • Achieves full inflation within approximately 40 ms to 5 s following crash detection
  • Certified for up to six deployments provided the system remains undamaged
  • Integrated CE Level 1 passive armor on chest and back
  • Advanced Electronic Control Unit (ECU) featuring three accelerometers and three gyroscopes for precise monitoring
  • Integrated LED display module with sealed window and a protected USB?C charging port, engineered into the front chassis panel
  • Nucleon PLASMA CE Level 1 back protector with honeycomb structure, providing a lightweight, ventilated carrier for the system
  • Breathable stretch mesh vest chassis with ergonomic low?profile patterning, elastic webbing and buckle hardware; total system weight approx. 3,140–3,170 g depending on size
  • Self?contained electronic architecture with internal sensor suite and an integrated single gas inflator canister; no external sensors or GPS required
  • ECU mounted inside the CE?certified back protector in a sealed, shock?protected housing for physical security
  • Modular construction with removable ECU and airbag bladder to facilitate cleaning and maintenance of the vest
  • Weather?sealed electronics and connectors engineered to operate between ?10°C and +50°C
  • Electronic system built to ECE R10 04 electromagnetic compatibility requirements for stability
  • Update?capable ECU architecture with Bluetooth interface enabling firmware loading via the Tech?Air App
  • Colors: White
  • Sizes: Small, Medium, Large, X-Large, 2X-Large
  • SKU: 2701-1520, 2701-1521, 2701-1522, 2701-1523, 2701-1524

Alpinestar Men Size Chart

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

Alpinestar Mens Size Chart

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

Alpinestar Mens Size Chart

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"

Alpinestar Womens Size Chart

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

Alpinestar Gloves Size Chart

 
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

Alpinestar Boots Size Chart

Off-Road Boots

   
US5 6 7 8 9 10 11 12 13 14 15 16
EU38 39 40.5 42 43 44.5 45.5 47 48 49.5 51 52

Road Boots

   
US3.5 4 5 6 6.5 7.5 8 9 9.5 10.5 11.5 12 12.5 13.5 14
EU36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

Alpinestar Jackets Size Chart

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

Alpinestar Leather Suit Size Chart

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

Alpinestar Gloves Size Chart


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

Alpinestar Womens Off-Road Boots Size Chart

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

Alpinestar Womens Jackets Size Chart

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

Alpinestar Womens Leather SUit Size Chart

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.

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.

Product Image Color Size SKU Availability Price
White White Small 2701-1520-PU Out of Stock $699.95
White White Medium 2701-1521-PU In Stock $699.95
White White Large 2701-1522-PU In Stock $699.95
White White X-Large 2701-1523-PU In Stock $699.95
White White 2X-Large 2701-1524-PU In Stock $699.95

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