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ALPINESTARS من ألبينستار BACK PROTECTOR حماية سترة خلفية - BOOST BOX PERFORMANCE Alpinestars6503919 - M

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ALPINESTARS NUCLEON KR-2I BACK PROTECTOR INSERT BLACK

Name: ALPINESTARS NUCLEON KR-2I BACK PROTECTOR INSERT BLACK
Brand: Alpinestars
SKU: 6503919-M
Price: 300.0 SAR
Availability: InStock

Brand: Alpinestars

In stock — ready to ship

Out of stock

This variant is currently unavailable

Estimated restock: 2–3 weeks

SAR354.00 SAR300.00

Pay in 4 monthly installments of 75.00

Subtotal SAR300.00

Quantity

Quantity must be 1 or more

VAT Included Original Products

100% Original Products

Customer Support 24/7 Support

0544887277

Fast Shipping

Delivery within 24 hours

Worldwide Delivery

Shipping across Saudi Arabia & worldwide

Alpinestars

Alpinestars Jacket Size Chart

Switch between men’s and women’s charts to match your Alpinestars jacket fit.

Alpinestars

ALPINESTARS NUCLEON KR-2I BACK PROTECTOR INSERT BLACK

Jacket

How to Measure

Measure chest under the armpits, waist at the navel, outer arm from shoulder to wrist, and full height from floor to the top of the head.

Size Reference

Size	Chest (cm)	Chest (in)	Waist (cm)	Waist (in)	Outer Arm (cm)	Outer Arm (in)	Height (cm)	Height (in)
XXS	78–83.5	30.7–32.9	63–69	24.8–27.2	49–51	19.3–20.1	157–162	61.8–63.8
XS	83.5–89	32.9–35.0	69–75	27.2–29.5	51.5–53.5	20.3–21.1	163–168	64.2–66.1
S	89–94.5	35.0–37.2	75–81	29.5–31.9	54.5–56.5	21.5–22.2	169–174	66.5–68.5
M	94.5–100	37.2–39.4	81–87	31.9–34.3	57.5–59	22.6–23.2	175–179	68.9–70.5
L	100–105.5	39.4–41.5	87–92	34.3–36.2	60–62	23.6–24.4	180–184	70.9–72.4
XL	105.5–111	41.5–43.7	92–97	36.2–38.2	63–65	24.8–25.6	185–189	72.8–74.4
XXL	111–116.5	43.7–45.9	97–102	38.2–40.2	66–68	26.0–26.8	190–194	74.8–76.4
3XL	116.5–122	45.9–48.0	102–107	40.2–42.1	66–68	26.0–26.8	190–194	74.8–76.4
4XL	122–127.5	48.0–50.2	107–112	42.1–44.1	68–70	26.8–27.6	195–199	76.8–78.3
5XL	127.5–133	50.2–52.4	112–117	44.1–46.1	68–70	26.8–27.6	195–199	76.8–78.3
6XL	133–138.5	52.4–54.5	117–122	46.1–48.0	68–70	26.8–27.6	195–199	76.8–78.3

EU Size	Chest (cm)	Chest (in)	Bust (cm)	Bust (in)	Waist (cm)	Waist (in)	Hip (cm)	Hip (in)	Outer Arm (cm)	Outer Arm (in)	Height (cm)	Height (in)
38	78–82	30.7–32.3	82–86	32.3–33.9	62–66	24.4–26.0	86–90	33.9–35.4	52–53	20.5–20.9	161–164	63.4–64.6
40	82–86	32.3–33.9	86–90	33.9–35.4	66–70	26.0–27.6	90–94	35.4–37.0	54–55	21.3–21.7	165–168	65.0–66.1
42	86–90	33.9–35.4	90–94	35.4–37.0	70–74	27.6–29.1	94–98	37.0–38.6	56–57	22.0–22.4	169–172	66.5–67.7
44	90–94	35.4–37.0	94–98	37.0–38.6	74–78	29.1–30.7	98–102	38.6–40.2	58–59	22.8–23.2	173–176	68.1–69.3
46	94–98	37.0–38.6	98–102	38.6–40.2	78–82	30.7–32.3	102–106	40.2–41.7	60–61	23.6–24.0	177–180	69.7–70.9
48	98–102	38.6–40.2	102–106	40.2–41.7	82–86	32.3–33.9	106–110	41.7–43.3	62–63	24.4–24.8	181–184	71.3–72.4
50	102–106	40.2–41.7	106–110	41.7–43.3	86–90	33.9–35.4	110–114	43.3–44.9	62–63	24.4–24.8	181–184	71.3–72.4
52	106–110	41.7–43.3	110–114	43.3–44.9	90–94	35.4–37.0	114–118	44.9–46.5	64–65	25.2–25.6	185–188	72.8–74.0
54	110–114	43.3–44.9	114–118	44.9–46.5	94–98	37.0–38.6	118–122	46.5–48.0	64–65	25.2–25.6	185–188	72.8–74.0

How to Measure

Chest: Measure around the fullest part of your chest, just under the armpits, keeping the tape horizontal.
Waist: Measure around your natural waistline, in line with your navel, keeping the tape horizontal.
Hip: Measure around the fullest part of your hips, about 20 cm below the waistline.
Thigh: Measure around the widest part of your thigh, just below the crotch.
Inner Leg: Stand straight and measure from the crotch down to the bottom of your ankle.
Outer Arm: Measure from the top of your shoulder down to your wrist with your arm slightly bent.
Height: Stand against a wall and measure from the floor to the top of your head.

Fit Tips

Shoulders should sit at the natural shoulder line.
Jacket should allow full arm and torso movement.
Leave room for a base layer in cold weather.
If between sizes, choose according to chest measurement first.

Important Notes

Sizes vary by brand.
Always measure before ordering.
Size chart is for reference only.

Chest: Measure around the fullest part of your chest, just under the armpits, keeping the tape horizontal.
Waist: Measure around your natural waistline, in line with your navel, keeping the tape horizontal.
Hip: Measure around the fullest part of your hips, about 20 cm below the waistline.
Thigh: Measure around the widest part of your thigh, just below the crotch.
Inner Leg: Stand straight and measure from the crotch down to the bottom of your ankle.
Outer Arm: Measure from the top of your shoulder down to your wrist with your arm slightly bent.
Height: Stand against a wall and measure from the floor to the top of your head.

Shoulders should sit at the natural shoulder line.
Jacket should allow full arm and torso movement.
Leave room for a base layer in cold weather.
If between sizes, choose according to chest measurement first.

Sizes vary by brand.
Always measure before ordering.
Size chart is for reference only.

Need help finding your size?

Our gear experts are online now.

WhatsApp 054 488 7277

Description

Alpinestars Nucleon KR-CELLi Back Protector Insert

The Alpinestars Nucleon KR-CELLi Back Protector Insert is an ultra-lightweight, CE-certified solution designed to deliver optimal protection, flexibility, and airflow for riders.

Featuring a triple-segmented back shell, the protector is constructed from a high-performance polymer blend, offering excellent flexibility and reduced weight. Its advanced micro-cell structure ensures efficient impact energy absorption while maximizing ventilation.

Key Features:

CE Level 1 Certified Protection
Complies with EN 1621-2:2014 safety standards.

Ultra-Lightweight Construction
Engineered for comfort without compromising protection.

Advanced Micro-Cell Technology
Optimized for impact absorption and airflow.

Ergonomic Design
Contours naturally to the rider’s back for a secure and comfortable fit.

High Breathability
AirMesh lining enhances airflow and rider comfort.

Flexible Structure
Horizontal flexion grooves adapt to different riding positions.

Specifications:

· Type: Back Protector Insert

· Certification: CE Level 1 (EN 1621-2:2014)

· Construction: Polymeric material with micro-cell structure

· Fitment: Multiple sizes available

Shipping

We ship your order within Saudi Arabia via Naqel or Aramex, and it typically arrives within 2 to 4 business days: about 2 days for major cities, and 3 to 4 days for other areas.

Free shipping on orders over SAR 1,500 within the Kingdom.

We also ship internationally via carriers such as FedEx and UPS. Delivery times vary by destination country.

After your order ships, you will receive a tracking number so you can follow your shipment until delivery.

You can cancel your order at any time before shipping at no charge. Special pre-order / reservation orders cannot be cancelled.

Return Policy

You may request a product return within 3 days of delivery, or an exchange within 7 days of delivery.

Return & exchange conditions

The product must be in its original unused condition, with the original invoice, original packaging, and all accessories included.

Returns or exchanges are not accepted if the product has been opened or its packaging tampered with, shows signs of use, damage, or improper storage, or if any accessories or parts of the original packaging are missing.

Excluded products

Some products cannot be returned or exchanged, such as: used products including footwear, clothing, and spare parts; electrical/electronic parts and batteries; personal protective clothing and gear after use or after removing accessories; and technical spare parts after installation or use.

Electronic products and batteries must be inspected within 48 hours of delivery.

Fees

When returning a resalable product, up to 25% of its value may be deducted.

For showroom purchases paid by bank card (Visa or Mastercard), if a return is requested more than 24 hours after purchase, an electronic payment processing fee of 2.5% applies.

How to return

You can request a return shipping label from customer service for SAR 30, or ship the product at your own expense.

Manufacturing defects & shipping errors

If the product has a confirmed manufacturing defect, or if a shipping error was made on our side, we will cover all related costs and provide a full refund including shipping fees.

Processing & refunds

Return and exchange requests are processed within two business days. After approval, the refund is issued the same day and may appear in your account within 1 to 7 business days depending on your bank.

Confirming that a part fits your motorcycle is the customer’s responsibility before purchase. If you are unsure, contact us before ordering and we will be happy to help.