Alpinestars RK-1 Plasma Knee Braces Adult Off-Road Body Armor
Anatomically profiled for all forms of off-road riding, the RK-1 PLASMA Knee Brace has been engineered to provide comfortable knee support while still being lightweight, breathable, and protective. This knee brace features a Nucleon PLASMA knee protector encased in an innovative hybrid frame construction, consisting of a flexible composite over-injected on a high-performance polymer blend to offer superb frame rigidity while still being flexible at the upper and lower strap areas.
- This brace provides optimal structural integrity and support while being ultra-lightweight and adaptive, and thus reduces the risk of sustaining injuries to the medial and lateral collateral ligament, the anterior and posterior cruciate ligament, and the lateral and medial meniscus
- The replaceable triple segmented knee cups are constructed with a polyurethane outer shell backed with a Nucleon PLASMA protector for the optimum blend of impact protection, flexibility, and scratch resistance
- The self-centering knee cup and the strategically positioned upper and lower patella extensions ensure maximum coverage regardless of the flexion or extension angles
- The extremely stable, slim-design four-point hinge system perfectly follows the articulation of the knee while the extension stops, which are available in a range from 0 to 30 degrees, assist in setting the brace to the desired maximum opening angle
- The stainless-steel bushings in the four-point hinge system have an anti-oxidation treatment
- Nucleon PLASMA is a viscoelastic material engineered from bio-based polymers and formed into a structure that is pliable in all directions while maintaining the ability to dissipate impact energies. Lightweight and highly ventilated, the knee protector offers strong impact force dispersion and absorption while ensuring maximum coverage in all riding positions
- Colors: Red / Black / Red / Black
- Sizes: Small - Medium, Large - X-Large
- SKU: 2704-0713, 2704-0714
![Red / Black / Red / Black Red / Black / Red / Black](http://haustrom.com/cdn/shop/files/apparel-alpinestars-off-road-body-armor-adult-rk-1-plasma-knee-braces-red-black-red-black_small.jpg?v=1722381497)
![Red / Black / Red / Black Red / Black / Red / Black](http://haustrom.com/cdn/shop/files/apparel-alpinestars-off-road-body-armor-adult-rk-1-plasma-knee-braces-red-black-red-black_small.jpg?v=1722381497)
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.