Free UK Shipping Over £150

ProX Racing Parts specializes in high-quality, Japanese-manufactured engine components for dirt bikes, ATVs, snowmobiles, and personal watercraft, acting as a direct, often superior, replacement for OEM parts. They are best known for pistons, connecting rods, clutch components, and gaskets, utilizing modern CNC technology and premium materials like low-friction, high-silicon aluminum alloys.

Size	Chest (cm)	Waist (cm)	Rider Height (cm)
XS	86 – 90	72 – 76	160 – 167
S	91 – 95	77 – 81	165 – 172
M	96 – 100	82 – 86	170 – 177
L	101 – 105	87 – 91	175 – 182
XL	106 – 110	92 – 96	180 – 187
2XL	111 – 115	97 – 101	185 – 192
3XL	116 – 120	102 – 106	190 – 197
4XL	121 – 125	107 – 111	195 – 202

⚠️ Fit Notes (Important for Airbags)

The vest must fit snug but not restrictive
Do NOT size up for layering unless the specific model allows it
Tech-Air 5 is designed to be worn:
- Under compatible jackets
- Or under loose-fitting textile/leather jackets
There must be enough outer jacket expansion space (minimum 4cm around chest recommended)

TOPS

Size (EU)	Approx Height (cm)	Chest (cm)	Waist (cm)	Hip (cm)
48	~176	96	84	~100
50	~178	100	88	~104
52	~180	104	92	~108
54	~182	108	97	~112
56	~184	112	102	~116
58	~186	116	107	~120
60	~188	120	112	~124

BOOT SIZE

EU Size	UK Size (approx.)	US Men’s Size (approx.)
39	5.5	6
40	6.5	7
41	7.5	7.5
42	8	8.5
43	9	9.5
44	9.5	10
45	10.5	10.5
46	11.5	11.5
47	12	12

HELMETS

Head Circumference (cm)	EU / International	UK Hat Size	US Hat Size
51–52	XS	6⅜–6½	6½–6⅝
53–54	S	6½–6⅝	6⅝–6¾
55–56	S/M	6⅝–6¾	6¾–6⅞
57–58	M	6¾–7	6⅞–7⅛
59–60	L	7–7¼	7⅛–7¼
61–62	XL	7¼–7⅜	7¼–7⅜
63–64	XXL / 2XL	7⅜–7½	7⅜–7½
65+	3XL	7½+	7½+

01590 675657

info@ruggedroads.co.uk

Helmets

Womens

Gloves

BMW R1300GS

Luggage Builders

Footpegs, Levers & Stands

Yamaha

Aprilia

KTM

Ducati

Honda

Kove

Touratech

Kriega

SW-Motech

Turkana

OEM Honda

OEM Yamaha

Workshop & Tools

Filters

⚠️ Fit Notes (Important for Airbags)

Your basket (items: 0)