So comfortable you won't ever want to take it off. The A3 mountain bike helmet is a new standard in premium mountain bike helmets with luxurious comfort, patent-pending innovations in safety, ventilation that will you keep you cool on the longest climbs with comfort and coverage to protect on the sketchiest of descents. B-Series MIPS Rotational Brain Protection system creates an optimal 360 degree fit that can maximize the safety features built into the A3. This helmet received the highest possible score (5-STAR) from Virginia Tech's helmet safety lab, so you can feel confident in all conditions.
So comfortable you won't ever want to take it off. The A3 mountain bike helmet is a new standard in premium mountain bike helmets with luxurious comfort, patent-pending innovations in safety, ventilation that will you keep you cool on the longest climbs with comfort and coverage to protect on the sketchiest of descents. B-Series MIPS Rotational Brain Protection system creates an optimal 360 degree fit that can maximize the safety features built into the A3. This helmet received the highest possible score (5-STAR) from Virginia Tech's helmet safety lab, so you can feel confident in all conditions.
in 13 offers
So comfortable you won't ever want to take it off. The A3 mountain bike helmet is a new standard in premium mountain bike helmets with luxurious comfort, patent-pending innovations in safety, ventilation that will you keep you cool on the longest climbs with comfort and coverage to protect on the sketchiest of descents. B-Series MIPS Rotational Brain Protection system creates an optimal 360 degree fit that can maximize the safety features built into the A3. This helmet received the highest possible score (5-STAR) from Virginia Tech's helmet safety lab, so you can feel confident in all conditions.
So comfortable you won't ever want to take it off. The A3 mountain bike helmet is a new standard in premium mountain bike helmets with luxurious comfort, patent-pending innovations in safety, ventilation that will you keep you cool on the longest climbs with comfort and coverage to protect on the sketchiest of descents. B-Series MIPS Rotational Brain Protection system creates an optimal 360 degree fit that can maximize the safety features built into the A3. This helmet received the highest possible score (5-STAR) from Virginia Tech's helmet safety lab, so you can feel confident in all conditions.
Size
Last updated at 01/11/2025 14:07:05
Troy Lee Designs A3 MIPS MTB Helmet Uno Camo Blue XS/S
Free delivery between Tue – Fri
Troy Lee Designs A3 Mips helmet Size 57-60 Colour Red
Delivery between Mon – Tue $57.58
Troy Lee Designs A3 MIPS MTB Helmet - Uno White, XSmall - Small | Shop Crooze
Free delivery between 5–10 Nov
Troy Lee Designs A3 Uno MTB Helmet Camo blue XS/S - MTB Helmets
Delivery $69.18
Troy Lee Designs A3 MIPS Helmet Black
Delivery between 7–13 Nov $30.56
Troy Lee Designs A3 As Mips Helmet Uno Black, Xsmall/Small, Unisex (Adults)
Free delivery
See 19 historical offers
Troy Lee Designs A3 Uno MIPS Bicycle Helmet, black, Size XL 2XL for Men
Delivery $55.18
TLD A3 MIPS Helmet (25.2 Model)
Free delivery between 29 Oct – 4 Nov
Troy Lee Designs - A3 Uno MIPS Helmet (MTB) - Steel Blue XL/2XL
Delivery $60.62
Troy Lee Designs - 21 A3 AS MIPS HELMET MED / LGE / UNO SILVER / ELECTRO
Free delivery between Mon – Thu
Troy Lee Designs A3 MIPS Helmet Black / Medium / Large
Free delivery between 30 Oct – 7 Nov
Troy Lee Designs A3 Uno Half Shell Mountain Bike Helmet W/MIPS - EPP EPS Premium Lightweight - All Mountain Enduro Gravel Trail Cycling MTB Black Med
Delivery between 17–25 Oct $30.26
Tld - Troy Lee Designs Troy Lee Designs A3 Mips Mtb Helmet - Uno White | Buy Online With Afterpay
Delivery $8.50
Troy Lee A3 Mips Uno MTB Helmet - Black - 2XL
Delivery between Fri – Mon $90.64
| Season | 2022 |
| helmet model | helmet sizing |
Troy Lee Designs A3 MIPS MTB Helmet Uno Camo Blue XS/S
Free delivery between Tue – Fri
Troy Lee Designs A3 Mips helmet Size 57-60 Colour Red
Delivery between Mon – Tue $57.58
Troy Lee Designs A3 MIPS MTB Helmet - Uno White, XSmall - Small | Shop Crooze
Free delivery between 5–10 Nov
Troy Lee Designs A3 Mips Helmet Uno Red
Delivery $76.24
Troy Lee Designs A3 MIPS Helmet Black - XS-S
Delivery $142.99
See 19 historical offers
Troy Lee Designs - A3 Helmet; UNO Caper XS/SM
Delivery $30.26
Troy Lee Designs A3 Uno MIPS Bicycle Helmet, black, Size XL 2XL for Men
Delivery $55.18
151267005
Free delivery between 30 Oct – 7 Nov
TLD A3 MIPS AS HELMET
Free delivery
2025 TLD A3 Mips Helmet / Uno Black -
TLD A3 AS MIPS Helmet - Uno Slate Blue
TLD A3 MIPS Helmet (25.2 Model)
Free delivery between 29 Oct – 4 Nov
TLD A3 MIPS Helmet - M/L - Uno Caper
60-day returns
Troy Lee Designs - A3 Uno MIPS Helmet (MTB) - Steel Blue XL/2XL
Delivery $60.62
Troy Lee Designs - 21 A3 AS MIPS HELMET MED / LGE / UNO SILVER / ELECTRO
Free delivery between Mon – Thu
TLD A3 Mips Helmet - Uno Silver-
Free delivery
Troy Lee Designs A3 MIPS Helmet Black / Medium / Large
Free delivery between 30 Oct – 7 Nov
TLD A3 MIPS Helmet Uno Black / M/L
Free delivery
Troy Lee Designs A3 Uno Half Shell Mountain Bike Helmet W/MIPS - EPP EPS Premium Lightweight - All Mountain Enduro Gravel Trail Cycling MTB Black Med
Delivery between 17–25 Oct $30.26
Troy Lee Design A3 MIPS Bicycle Helmet - Uno Slate Blue / MD/LG
Tld - Troy Lee Designs Troy Lee Designs A3 Mips Mtb Helmet - Uno White | Buy Online With Afterpay
Delivery $8.50
Troy Lee A3 Mips Uno MTB Helmet - Black - 2XL
Delivery between Fri – Mon $90.64
| Season | 2022 |
| helmet model | helmet sizing |
