Your JavaScript seems to be deactivated! Please activate JavaScript to benefit from the full functionality of the shop.

100 Days Right Of Return

Free delivery from

GB / from £6.96 Delivery costsGB / GBPfrom £6.96

.ICCountryIcon{background-position-y:-1742px}

Open navigation

- Categories
- Back
- Categories
- PlaceHolder
Motorcycle
Bicycle
Snow Mobile
Casual
E-Scooter
Brands
SALE %
Gift Coupons

My bike

Home Motorcycle Motocross Pants Acerbis X-Flex Sirio Motocross Pants

-20%

Acerbis X-Flex Sirio Motocross Pants

from Acerbis

£139.20

You save 20%

£111.31

Net price plus shipping; you may be liable for taxes & duties in the destination country

Notify on availability

Currently not deliverable

Würselen store

Order your product online for pick-up at the store.
How it works

Description
Size chart

Description

Acerbis Sirio X-Flex Motocross Pants

Acerbis continues to develop innovative and protective products with the same enthusiasm and passion that the founders of Acerbis had in previous years.

Features:

Innovative ACERBIS X-Flex technology: fully elasticized material
Foam padding in knees area
Laser perforation in key areas for perfect ventilation
Can take any type of knee guard thanks to stretch mesh in the calf area
Double waist adjustments with Velcro
Closure with hook and button
Weight: 650 g

Additional product information

Material

Shell: 81.7% Polyester, 6.7% Nylon, 5.2% PU, 3.1% Aramid, 2.6% Synthetic leather, 0.7% Spandex / Lining: 100% Polyester

Jackets

A - body height: Take off your shoes and stand barefoot with your back against a wall to measure your body height to the top of your head.

B – chest circumference: Measure horizontally around the widest part of your chest.

C – waist circumference: Measure horizontally around your waist.

D – inside leg length: Inside leg measured from the crotch to the ground.

Ordering size	German size	Underarm width (cm)	Arm length (cm)	Back length (cm)	Shoulder width (cm)
M	48	65	65	70	56
L	50	68	66	72	58
XL	52	71	67	74	60
2XL	54	74	68	76	62
3XL	56	77	69	77	64

Jerseys

Ordering size	Underarm width (cm)	Arm length (cm)
M	58	79
L	60	82
XL	63	83
2XL	66	84
3XL	69	84.5
4XL	72	85.5
5XL	75	86.5

Trousers

Ordering size	German size	Inch size	Hip circumference with waistband relaxed (cm)	Hip circumference with waistband tightened (cm)	Inside leg length (cm)
XS	44	28	62	80	74
S	46	30	67	85	76
M	48	32	72	90	78
L	50	34	77	95	80
XL	52	36	82	100	82
2XL	54	38	87	105	84
3XL	56	40	92	110	85
4XL	58	42	97	114	87
5XL	60	44	102	118	89
6XL	62	46	107	122	91

Trousers for Kids

Ordering size	Size (cm)	Age	Underarm width (cm)	Arm length (cm)	Back length (cm)
XS	115	3-4	37	46	50
S	120	4-5	40	52	54
M	125	5-6	43	58	59
L	129	7-8	46	64	63
XL	142	9-10	49	70	67
XXL	147	11-12	52	76	72

Helmet sizes

A – Use a measuring tape around the widest point of your head (approx. 1 cm above the ears) to get the correct measurement for a helmet.
Apply the calculated value from the table.

Ordering size	Head circumference (cm)
XXS	51-52
XS	53-54
S	55-56
M	57-58
L	59-60
XL	61-62
XXL	63-64

Helmets for Kids

Ordering size	Head circumference (cm)
S	51-52
M	53-54
L	55-56

Shoes & Boots

A – Place both feet on a sheet of paper. Draw a vertical line to mark the tip and heel end of your foot.

B – Measure the lengths of both feet.

C – Compare the length of the bigger foot with the size table to find your perfect shoe size.

Ordering size	US size	UK size	Length (cm)
38	6 ½	6	24.5
40	7	6 ½	25
41	8	7 ½	26
42	8 ½	8	27
43	9½	9	28
44	10	9 ½	28.5
45	11	10 ½	29.5
46	12	11 ½	30.5
47	12 ½	12	31

Boots for Kids

Ordering size	US size	UK size	Length (cm)
32	1		20
33	2	1	20.5
34	3	2	21
35	3 ½	2½	22
36	4	3	22.5
37	5	4	23
38	5 ½	4 ½	24

Gloves

A – Measure the circumference of your hand at the widest point around your palm to find the correct glove size.

Copy the value into the table

Ordering size	US size
S	8
M	9
L	10
XL	11
2XL	12

Gloves for Kids

Ordering size	US size
XS	3/4
S	5/6
M	7/8
L	9/10
XL	11/12

We also recommend

Acerbis X-Team Motocross Boots

£135.53 £120.88

Customers who bought this product also bought

Scott Recoil Xi Noseguard

(3)

£5.83
Spark Futo Brio Light Socks Long

(4)

£12.46
-43% Special offer

Answer Arkon Bold Motocross Jersey

(1)

£25.61 | You save 43%

from £14.62
Acerbis Ram 14 Waist Pack

(3)

£21.95

Browse these categories as well: Motocross Pants, Pants

Thematic areas

Service

FC Moto

Newslettersubscribe

Subscribe to the newsletter & secure yourself attractive advantages:
- Exclusive offers, new products & trends
- Attractive discounts, bargains & vouchers

- Large product range with more than 150,000 items and top rating at Trustpilot, Idealo ...

Large selection

Top brands

More than 100 brands

Products

Huge range with more than 150,000 items

Best price guarantee

Always current market prices and attractive offers

FC-Moto rating

- 100 days return policy and guarantee for reimbursement

Wolrdwide Shipping

We ship worldwide and many products directly from stock.

Easy Return For many countries, we offer a discounted return label

- Convenient payment: Advance payment, PayPal, credit card, cash on delivery, Sofort Überweisung & collection

Pay securely

Advance payment – the traditional method of payment

Cash on delivery - payment takes place at your front door.

Credit card - the convenient & fast method of payment.

PayPal – the most secure & fast method of payment

Sofort Banking - pay easily and securely with your standard online

banking details (PIN/TAN).

Collection: place a non-binding order online, then pick it up and pay in a shop

Hotline +49 (0) 2405 4950050
Mon - Fri 9 am - 6 pm
Saturday 10 am - 4 pm

Ordering size	German size	Underarm width (cm)	Arm length (cm)	Back length (cm)	Shoulder width (cm)
M	48	65	65	70	56
L	50	68	66	72	58
XL	52	71	67	74	60
2XL	54	74	68	76	62
3XL	56	77	69	77	64

Ordering size	German size	Inch size	Hip circumference with waistband relaxed (cm)	Hip circumference with waistband tightened (cm)	Inside leg length (cm)
XS	44	28	62	80	74
S	46	30	67	85	76
M	48	32	72	90	78
L	50	34	77	95	80
XL	52	36	82	100	82
2XL	54	38	87	105	84
3XL	56	40	92	110	85
4XL	58	42	97	114	87
5XL	60	44	102	118	89
6XL	62	46	107	122	91

Ordering size	German size	Underarm width (cm)	Arm length (cm)	Back length (cm)	Shoulder width (cm)
M	48	65	65	70	56
L	50	68	66	72	58
XL	52	71	67	74	60
2XL	54	74	68	76	62
3XL	56	77	69	77	64

Ordering size	German size	Inch size	Hip circumference with waistband relaxed (cm)	Hip circumference with waistband tightened (cm)	Inside leg length (cm)
XS	44	28	62	80	74
S	46	30	67	85	76
M	48	32	72	90	78
L	50	34	77	95	80
XL	52	36	82	100	82
2XL	54	38	87	105	84
3XL	56	40	92	110	85
4XL	58	42	97	114	87
5XL	60	44	102	118	89
6XL	62	46	107	122	91

Home Motorcycle Motocross Pants Acerbis X-Flex Sirio Motocross Pants

Acerbis X-Flex Sirio Motocross Pants

Würselen store

Würselen store

Description

Description

Additional product information

Size chart

We also recommend

Customers who bought this product also bought

Scott Recoil Xi Noseguard

Spark Futo Brio Light Socks Long

Answer Arkon Bold Motocross Jersey

Acerbis Ram 14 Waist Pack

Ordering size	German size	Underarm width (cm)	Arm length (cm)	Back length (cm)	Shoulder width (cm)
M	48	65	65	70	56
L	50	68	66	72	58
XL	52	71	67	74	60
2XL	54	74	68	76	62
3XL	56	77	69	77	64

Ordering size	German size	Inch size	Hip circumference with waistband relaxed (cm)	Hip circumference with waistband tightened (cm)	Inside leg length (cm)
XS	44	28	62	80	74
S	46	30	67	85	76
M	48	32	72	90	78
L	50	34	77	95	80
XL	52	36	82	100	82
2XL	54	38	87	105	84
3XL	56	40	92	110	85
4XL	58	42	97	114	87
5XL	60	44	102	118	89
6XL	62	46	107	122	91