Motocross Kit Size Guide

To help you find the correct size motocross clothing, we have put together a list of all the popular brands and their respective sizes. Where possible, we have combined the charts, but where the manufacturer has a unique size guide we have put them in a separate table. We hope you find this guide of use when picking your dirtbike clothing and get a good fit first time.

Motocross Jerseys / Shirts (Mens)

Brand	XSmall	Small	Medium	Large	XLarge	XXLarge	XXXLarge	XXXXLarge	Notes
Fox		33-35 / 32-32.5	36-39 / 33-33.5	40-42 / 33.5-34	43-46 / 34.5-35	47-50 / 35.5-36	51-56 / 36		Sizes in inches. Chest / Sleeve
Thor Fuse		19.5 / 30.5 / 29.75	21 / 31.5 / 30.25	22.5 / 32.5 / 30.78	24 / 34.5 / 31.75	25.5 / 35 / 32.25			Sizes in inches. Chest / Body Length / Sleeve Length
Thor Pulse		21 / 31 / 30	22.5 / 31 / 30.5	24 / 31.5 / 31	25.5 / 32 / 31.5	27 / 33 / 32			Sizes in inches. Chest / Body Length / Sleeve Length
Thor Prime		17 / 31 / 27.75	19 / 31 / 28	20.5 / 31.5 / 29	22 / 32 / 29.5	24.75 / 33 / 30			Sizes in inches. Chest / Body Length / Sleeve Length
Troy Lee Designs SE / SE AIR / SE PRO / GP / GP AIR		21 / 28 / 33	22 / 29 / 35	23 / 30 / 37	24 / 31 / 38	26.5 / 32 / 39	26.5 / 33 / 39		Sizes in inches. Chest / Front Length / Center Back Sleeve
Troy Lee Designs Super Retro / Sprint		21 / 27 / 32	22 / 28 / 34	23 / 29 / 36	24 / 30 / 37	25.5 / 31 / 38			Sizes in inches. Chest / Front Length / Center Back Sleeve
Alpinestars	35" - 36"5/8	37"3/8 - 39"	39"3/4 - 41"3/8	42"1/8 - 43"3/4	44"1/2 - 46"	46"7/8 - 48"3/4	49"1/4 - 50"3/4	51"5/8 - 53"1/8	Sizes in inches. Chest

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Fox Shirts Measurement Guide (Men’s)
To measure Chest – With a tape measure, hold it level and measure around the fullest part of the chest, under the arms and around the shoulder blades.
To measure Sleeve – With elbow slightly bent, measure from the center behind the neck, over the point of the shoulder, around the elbow and down the wrist.

Troy Lee Designs Measurement Guide
Measurements in inches. Chest: 1″ below armhole, Front Length: From high point shoulder.

Motocross Jerseys / Shirts (Women's)

Brand	XSmall	Small	Medium	Large	XLarge	Notes
Fox		33 / 29	35 / 30	36.5 / 30.5	39.5 / 31.5	Sizes in inches. Bust / Sleeve
Thor	18 / 29 / 25	19 / 29.5 / 26.5	20 / 29.5 / 28	21 / 30 / 29.5	22 / 30 / 30	Sizes in inches. Chest / Body Length / Sleeve Length

Fox Shirts Measurement Guide (Women’s)
To measure Bust- With a tape measure, hold it level and measure around the fullest part of the chest, under the arms and around the shoulder blades.
To measure Sleeve – With elbow slightly bent, measure from the center behind the neck, over the point of the shoulder, around the elbow and down the wrist.

Motocross Jerseys / Shirts (Youth / Kid's)

Brand	2XSmall	XSmall	Small	Medium	Large	XLarge	Notes
Fox	22 / 18.75 (KS)	23 / 20 (KM)	25 / 22 (YS)	27 / 23 (YM)	28 / 25 (YL)	29.5 / 27 (YXL)	Sizes in inches. Chest / Sleeve
Thor	13 / 20.5 / 18.5	14 / 22 / 20	15 / 23.5 / 21.5	16 / 24.5 / 23	17 / 26 / 24.5	18 / 27.5 / 26	Sizes in inches. Chest / Body Length / Sleeve Length

Fox Shirts Measurement Guide (Youth)
To measure Chest – With a tape measure, hold it level and measure around the fullest part of the chest, under the arms and around the shoulder blades.
To measure Sleeve – With elbow slightly bent, measure from the center behind the neck, over the point of the shoulder, around the elbow and down the wrist.

Motocross Pants (Men's)

Brand	28	30	32	34	36	38	40	42	44	46	48	Notes
Fox	27-29 / 30	29-31 / 30-30.5	31-33 / 30.5-31	33-35 / 31-31.5	35-37 / 31.5-32	37-39 / 32-32.5	39-41 / 32-32.5					Sizes in inches. Waist / Inseam
Thor	27-28 / 29.5	29-30 / 30	31-32 / 30.5	33-34 / 31	35-36 / 32	37-38 / 32	39-40 / 32	41-42 / 32	43-44 / 32	45-46 / 32	47-48 / 32	Sizes in inches. Waist / Inseam
Troy Lee Designs SE / SE AIR / SE PRO / GP / GP AIR	28-30 / 28 / 11	30-32 / 28.5 / 11.5	32-34 / 29 / 12	34-36 / 29.5 / 12.2	36-38 / 30 / 12.5	38-40 / 30.5 / 13	40-42 / 30.5 / 13.5	42-44 / 31 / 14	44-46 / 31 / 14.2			Sizes in inches. Waist / Inseam / Knee Width
Troy Lee Designs Sprint	28 / 30 / 9.25	30 / 31 / 10	32 / 31.5 / 10	34 / 32 / 11	36 / 32.5 / 11	38 / 33 / 12						Sizes in inches. Waist / Inseam / Knee Width

Fox Pants Measurement Guide (Men’s)
To measure Waist – With a tape measure, hold it level and measure the circumference at the waist’s natural bend.
To measure Inseam – While standing without shoes and with feet slightly apart, measure from the crotch along the leg to the floor.

Troy Lee Designs Pants Measurement Guide (Men’s)
Measurements in inches. Waist (relaxed-stretched).

Motocross Pants (Women's)

Brand / Size	1/2	3/4	5/6	7/8	9/10	11/12	13/14	Notes
Fox	25 / 29 / 35	26 / 29.5 / 36	27 / 29.5 / 37	28.5 / 30 / 38.5	30 / 30 / 40	31.5 / 30.5 / 41.5	33 / 30.5 / 43	Sizes in inches. Waist / Inseam / Hip
Thor		24 / 26.5	26 / 27.3	28 / 28	30 / 28.8	32 / 29.5	34 / 30.3	Sizes in inches. Waist / Inseam

Fox Pants Measurement Guide (Women’s)
To measure Waist – With a tape measure, hold it level and measure the circumference at the waist’s natural bend.
To measure Inseam – While standing without shoes and with feet slightly apart, measure from the crotch along the leg to the floor.
To measure Hip – With the tape measure, hold it level and legs straight. Measure the circumference at the fullest point.

Motocross Pants (Youth)

Brand / Size	18	20	22	24	26	28	Notes
Thor	17-18 / 16.2	19-20 / 20.3	21-22 / 22.3	23-24 / 23.6	25-26 / 25.1	27-28 / 26	Sizes in inches. Waist / Inseam
Troy Lee Designs Sprint			22 / 22 / 7	24 / 24 / 8	26 / 25 / 9	28 / 26 / 10	Measurements in inches. Waist (relaxed-stretched).

Motocross Pants (Fox Youth)

Brand	4	5	6	8	10	12	Notes
Fox	21 / 39-41	21.5 / 42-44	23 / 47-48	24 / 50-52	26 / 54-56	28 / 58-60	Sizes in inches. Waist / Height

Fox Pants Measurement Guide (Youth)
To measure Waist – With a tape measure, hold it level and measure the circumference at the waist’s natural bend.
To measure Inseam – While standing without shoes and with feet slightly apart, measure from the crotch along the leg to the floor.

Motocross Helmets (Adult)

Brand	XS	S	M	L	XL	XXL	Notes
Fox MX14	20 7/8 - 21 1/4	21 5/8 - 22	22 1/5 - 22 7/8	23 1/4 - 23 5/8	24 - 24 3/8	24 5/8 - 25 1/8	Sizes in inches.
Fox V3R / Rampage		21 1/4 - 22 1/8	22 3/8 - 23 1/8	23 1/4 - 23 3/4	23 7/8 - 24 3/4		Sizes in inches.
Fox (other)	20 7/8 - 21 1/4	21 1/4 - 22 1/8	22 3/8 - 23 1/8	23 1/4 - 23 3/4	23 1/8 - 24 3/4	24 1/8 - 25 3/4	Sizes in inches.
Thor	20 3/4 - 21 1/4	21 5/8 - 22	22 1/2 - 22 3/4	23 1/4 - 23 5/8	24 - 24 1/2	24 3/4 - 23 5/8	Sizes in inches.
Troy Lee Designs (SE3 / Air)	20-7/8 to 20-1/4	21-1/4 to 22	22 to 22-3/4	22-3/4 to 23-5/8	23-5/8 to 24-1/2	24-1/2 to 24-7/8
Troy Lee Designs (D3)	20.5 to 20.9	21.3 to 21.7	22 to 22-4	22.8 to 23.2	23.6 to 24.4	24.8 to 25.6
Troy Lee Designs (D2)	21 to 22 (XS/SM)	21 to 22 (XS/SM)	22.4 to 23.3 (MD/LG)	22.4 to 23.3 (MD/LG)	23.7 to 24.5 (XL/2XL)	23.7 to 24.5 (XL/2XL)	Sized in 3 sizes - XS/SM, MD/LG, XL/2XL
Troy Lee Designs (A1)	21.3 to 22 (XS/SM)	21.3 to 22 (XS/SM)	22.4 to 23.2 (MD/LG)	22.4 to 23.2 (MD/LG)	22.6 to 24.8 (XL/2XL)	22.6 to 24.8 (XL/2XL)	Sized in 3 sizes - XS/SM, MD/LG, XL/2XL

Motocross Helmets (Youth)

Brand	XS	S	M	L	XL	XXL	Notes
Fox		18 1/2 - 18 7/8 / 5 7/8 - 6	19 1/4 - 19 3/4 / 6 1/8 - 6 1/4	20 - 20 1/2 / 6 3/8 - 6 1/2			Sizes in inches. (head size / hat size)

Fox Motocross Helmet Measurement Size Guide (Adults / Kids)
With tape measure level, measure the widest point of your head, approximately 1″ above your eyebrows.

Motocross Boots (Thor Blitz Adult Men's)

Code
US	7	8	9	10	11	12	13	14	15
UK	5	6	7	8	9	10	11	12	13
EU	40.5	42	43	44.5	45.5	47	48	49.5	51

Motocross Boots (Thor Blitz Adult Women's)

Code
US	5	6	7	8	9	10
UK	2.5	3.5	4.5	5.5	6.5	7.5
EU	35	36	37	38	39	40

Motocross Boots (Fox Adult)

Brand	5	6	7	8	9	10	11	12	13	14	15	Notes
Fox Comp 5				9.9375	10.25	10.5625	10.9375	11.25	11.5625	11.875	12.1875
Fox F3R Boot				9.9375	10.25	10.5625	10.9375	11.25	11.5625	11.875
Fox Women's Boots	8.5	8.875	9.25	9.5	9.875	10.1875	10.5

Motocross Boots (Youth)

Brand	K10	K11	K12	K13	Y1	Y2	Y3	Y4	Y5	Y6	Y7	Y8
Fox Kid's Comp 5	6.5	6.75	7.125	7.5
Fox Youth Comp 5					7.75	8.125	8.5	8.75	9.125	9.5	9.75	9.9375

Fox MX Boots Size Guide (Adults & Youth/Kids)
Use your regular shoe size as a reference. Boots are in Men’s or Boy’s sizes. If you are following the measurements, use a regular ruler. Make sure you are standing, wearing the socks you will wear with your new shoes or boots. Then convert the measurement to your shoe size using the above chart. Measurements are a guidline and do not guarantee the proper fit. Note, Fox boots are only offered in whole shoe sizes, so take this into consideration when using the measurement chart.

Motocross Gloves (Adult)

Brand	S	M	L	XL	XXL	XXXL	XXXXL	Notes
Fox Men's	7 1/8 - 7 3/8 (8)	7 3/8 - 7 5/8 (9)	7 5/8 - 7 7/8 (10)	7 7/8 - 8 1/8 (11)	8 1/8 - 8 3/8 (12)	8 3/8 - 8 5/8 (13)	8 5/8 - 8 7/8 (14)
Fox Women's	6 5/8 - 6 7/8 (8)	6 7/8 - 7 1/8 (9)	7 1/8 - 7 3/8 (10)	7 3/8 - 7 5/8 (11)

Fox Motocross Gloves Size Guide (Men’s)
HAND LENGTH – Hand measure should be taken from the wrist to the end of the middle finger. If right-handed be sure to use right hand.

Fox Motocross Gloves Size Guide (Women’s)
HAND LENGTH  – Hand measure should be taken around the fullest part of the hand, not icluding the thumb, to the end of the middle finger. If right-handed be sure to use right hand.

Motocross Jackets (Adult)

Brand	S	M	L	XL	XXL	XXXL	Notes
Fox	34-35 / 31 1/2 - 32 1/2 / 28-30	36-38 / 32 1/2 - 33 1/2 / 31-33	40-42 / 33 1/2 - 34 1/2 / 34-36	44-46 / 34 1/2 - 35 1/2 / 38-40	48-50 / 35 1/2 - 36 1/2 / 42-44	52-54 / 35 1/2 - 36 1/2 / 46-48	Size in inches (Chest / Sleeve / Waist)
Troy Lee Designs Adventure Jacket	23.6 / 21.25 / 26.4 / 24.5	24.4 / 22 / 27.5 / 25.25	25.2 / 22.75 / 28.75 / 26	26 / 23.6 / 29 / 26.75	26.7 / 24.4 / 30.25 / 27.5		Size in inches (Chest / Bottom / Front Length / Sleeve Length)

Fox Motocross Jacket Size Guide (Adults)
CHEST – With a tape measure, hold it level and measure around the fullest part of the chest, under the arms and around the shoulder blades.
CENTER BACK SLEEVE – With elbow slightly bent, measure from the center behind the neck, over the point of the shoulder, around the elbow and down the wrist.
WAIST – With a tape measure, hold it level and measure the circumference at the waist’s natural bend.

Troy Lee Designs Adventure Jacket (Adult)
Measurements in inches. Chest: 1″ below armhole, Front Length: From high point shoulder.

Troy Lee Designs Knee Guards

Size guide for Troy Lee Designs Raid / Panic / Method / TBone / Semenuk Knee Guards. Measurements in inches.

Size	Lower Thigh	Top Calf	Rider Weight (LBS)	Rider Weight (KG)
XS / SM	15-17	13-14.5	70-140	32-63
MD / LG	16.5-18.5	14.5-17	140-180	63-82
XL / 2XL	18-21	15-18	180-220	82-100

Troy Lee Designs Youth Knee Guards

Size guide for Troy Lee Designs Speed Youth Knee Guards.

Size	Thigh (in)	Calf (in)	Thigh (cm)	Calf (cm)
Youth Medium (MD)	10.5-12	9.5-11	26.5-30.5	24-28
Youth Large (LG)	12-13.5	11-12.5	30.5-34.5	28-32

Troy Lee Designs Catalyst Knee Brace

Size guide for Troy Lee Designs Catalyst Knee Brace. Circumferences, measured in inches. Mid-Patella is the center of the Knee.

Measurement Point	Small	Medium	Large	X Large	XX Large
6" Above Mid-P	14.5 - 17	17 - 19.5	19.5 - 22.5	22.5 - 25.5	25.5 - 30
Mid-Patella	11.5 - 13	13 - 15	15 - 17	17 - 19	19 - 22
6" Below Mid-P	11.5 - 13	13 - 14.5	14.5 - 16.5	16.5 - 18.5	18.5 - 22

Troy Lee Designs KG 5400 / 5450 Knee Guards

Size guide for Troy Lee Designs KG 5400 / 5450 Knee Guards. Measurements in inches.

Size	Lower Thigh	Top Calf KG 5400	Top Calf KG 5450	Weight (LBS)	Weight (KG)
X-Small	15 - 17	13 - 14.5	13 - 14	70 - 90	32 - 41
Small	16 - 18	14 - 16	13 - 15	90 - 140	41 - 63
Medium	16.5 - 18.5	14.5 - 17	14 - 15.5	140 - 180	63 - 82
Large	18 - 21	15 - 18	14.5 - 17.5	180 - 220	82 - 100

Troy Lee Designs EG 5550 / 5500 Elbow Guards

Size guide for Troy Lee Designs EG 5550 / 5500 Elbow Guards. Measurements in inches.

Size	Lower Forearm EG 5550	Lower Forearm EG 5500	Mid Bicep EG 5550	Mid Bicep EG 5500	Weight (LBS)	Weight (KG)
X-Small	5 - 6.5	5 - 6.5	9.5 - 11.5	9.5 - 11	70 - 90	32 - 41
Small	5.5 - 7	6 - 7	10 - 12	10 - 11.5	90 - 140	41 - 63
Medium	6.5 - 8	6.5 - 8	10.5 - 12.5	10.5 - 12	140 - 180	63 - 82
Large	7 - 8.5	7.5 - 9	10.5 - 13	11 - 13	180 - 220	82 - 100

Troy Lee Designs Protective Vests & Shirts

Size guide for Troy Lee Designs Protective Vests & Shirts. Measurements in inches. Measure chest 1" under armpit.

	Youth Medium	Youth Large	Youth X Large	Small (Adult)	Medium (Adult)	Large (Adult)	X Large (Adult)
Chest Circumference	26 - 27	28 - 29	30 - 32	34 - 35	36 - 38	40 - 42	44 - 46

Troy Lee Designs Protective Shorts

Size guide for Troy Lee Designs Protective Shorts. Measurements in inches. Short Length.

Size	BP 7605	BP 5605	BP 3600	BP 4600
Youth MD	7-3/4	7-1/2	7-1/2	6-1/2
Youth LG	8	8	8	7
X-SMALL	8-1/4	8-1/2	8-1/4	7
SMALL	8-1/2	9	8-1/2	8
MEDIUM	9	9-1/4	9	8-1/4
LARGE	9-3/4	9-1/2	9-1/2	8-1/2
X-LARGE	10	10	10	9

Troy Lee Designs Protective Motocross Wrist Support WS 3205 / 5205

Size guide for Troy Lee Designs Protective MX Wrist Support WS 3205 / 5205. Measurements in inches.

Size	Small	Medium	Large
Glove Size	Y-S	M-L	L-3XL
Weight (LBS)	70-120	120-170	170-220
Weight (KG)	32-54	54-77	77-100