Name: Alterra
Brand: 6D
SKU: 15-0004
Price: 449.0 EUR
Availability: InStock

€449,00

Tax included. Shipping calculated at checkout.

Color

Solid Matte Black

Segment Grey White

Segment Slate Blue

Segment Military Green

Size —

Size chart

DETERMINING CORRECT HELMET SIZE
Ensure a Snug and Secure Fit: Your helmet should provide a secure fit around your entire head circumference. Cheek pads should offer firm support against your cheekbones, minimizing lateral movement. Our helmets offer various shell options, cheek pads, and liners for a personalized fit and exceptional comfort. Refer to our simple guide below to get started. For any inquiries, please reach out to us through our online contact form.

Measure your head circumference: Click here to learn how

X-Small / Small

Medium / Large

X-Large / XX-Large

In stock, ready to ship
Inventory on the way

The all-new 6D Alterra sets a new standard for full face enduro helmets, combining a lightweight design, effective ventilation, and all-day comfort without compromise. Featuring Omni-Directional Suspension™ (ODS) for advanced impact protection, an in-molded carbon fiber chin bar, and optimized airflow, it delivers full coverage without the bulk. Certified for e-bike and downhill riding, the Alterra is the perfect choice for enduro riders pushing their limits on any terrain.

Free shipping

[{"id":49941499117853,"title":"Solid Matte Black \/ X-Small \/ Small","option1":"Solid Matte Black","option2":"X-Small \/ Small","option3":null,"sku":"15-0004","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016237853,"product_id":9833651634461,"position":1,"created_at":"2025-05-02T23:52:57+03:00","updated_at":"2025-05-02T23:52:59+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_matte_black.jpg?v=1746219179","variant_ids":[49941499117853,49941499150621,49941499183389]},"available":true,"name":"Alterra - Solid Matte Black \/ X-Small \/ Small","public_title":"Solid Matte Black \/ X-Small \/ Small","options":["Solid Matte Black","X-Small \/ Small"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"659061851054.00","featured_media":{"alt":null,"id":53021421175069,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_matte_black.jpg?v=1746219179"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499150621,"title":"Solid Matte Black \/ Medium \/ Large","option1":"Solid Matte Black","option2":"Medium \/ Large","option3":null,"sku":"15-0006","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016237853,"product_id":9833651634461,"position":1,"created_at":"2025-05-02T23:52:57+03:00","updated_at":"2025-05-02T23:52:59+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_matte_black.jpg?v=1746219179","variant_ids":[49941499117853,49941499150621,49941499183389]},"available":true,"name":"Alterra - Solid Matte Black \/ Medium \/ Large","public_title":"Solid Matte Black \/ Medium \/ Large","options":["Solid Matte Black","Medium \/ Large"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"659061851078.00","featured_media":{"alt":null,"id":53021421175069,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_matte_black.jpg?v=1746219179"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499183389,"title":"Solid Matte Black \/ X-Large \/ XX-Large","option1":"Solid Matte Black","option2":"X-Large \/ XX-Large","option3":null,"sku":"15-0008","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016237853,"product_id":9833651634461,"position":1,"created_at":"2025-05-02T23:52:57+03:00","updated_at":"2025-05-02T23:52:59+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_matte_black.jpg?v=1746219179","variant_ids":[49941499117853,49941499150621,49941499183389]},"available":true,"name":"Alterra - Solid Matte Black \/ X-Large \/ XX-Large","public_title":"Solid Matte Black \/ X-Large \/ XX-Large","options":["Solid Matte Black","X-Large \/ XX-Large"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"0659061851092","featured_media":{"alt":null,"id":53021421175069,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_matte_black.jpg?v=1746219179"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499216157,"title":"Segment Grey White \/ X-Small \/ Small","option1":"Segment Grey White","option2":"X-Small \/ Small","option3":null,"sku":"15-0104","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016499997,"product_id":9833651634461,"position":4,"created_at":"2025-05-02T23:53:06+03:00","updated_at":"2025-05-02T23:53:07+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_white_green.jpg?v=1746219187","variant_ids":[49941499216157,49941499248925,49941499281693]},"available":true,"name":"Alterra - Segment Grey White \/ X-Small \/ Small","public_title":"Segment Grey White \/ X-Small \/ Small","options":["Segment Grey White","X-Small \/ Small"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"659061851115.00","featured_media":{"alt":null,"id":53021421338909,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_white_green.jpg?v=1746219187"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499248925,"title":"Segment Grey White \/ Medium \/ Large","option1":"Segment Grey White","option2":"Medium \/ Large","option3":null,"sku":"15-0106","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016499997,"product_id":9833651634461,"position":4,"created_at":"2025-05-02T23:53:06+03:00","updated_at":"2025-05-02T23:53:07+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_white_green.jpg?v=1746219187","variant_ids":[49941499216157,49941499248925,49941499281693]},"available":true,"name":"Alterra - Segment Grey White \/ Medium \/ Large","public_title":"Segment Grey White \/ Medium \/ Large","options":["Segment Grey White","Medium \/ Large"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"659061851139.00","featured_media":{"alt":null,"id":53021421338909,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_white_green.jpg?v=1746219187"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499281693,"title":"Segment Grey White \/ X-Large \/ XX-Large","option1":"Segment Grey White","option2":"X-Large \/ XX-Large","option3":null,"sku":"15-0108","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016499997,"product_id":9833651634461,"position":4,"created_at":"2025-05-02T23:53:06+03:00","updated_at":"2025-05-02T23:53:07+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_white_green.jpg?v=1746219187","variant_ids":[49941499216157,49941499248925,49941499281693]},"available":true,"name":"Alterra - Segment Grey White \/ X-Large \/ XX-Large","public_title":"Segment Grey White \/ X-Large \/ XX-Large","options":["Segment Grey White","X-Large \/ XX-Large"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"0659061851153","featured_media":{"alt":null,"id":53021421338909,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_white_green.jpg?v=1746219187"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499314461,"title":"Segment Slate Blue \/ X-Small \/ Small","option1":"Segment Slate Blue","option2":"X-Small \/ Small","option3":null,"sku":"15-0114","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016434461,"product_id":9833651634461,"position":3,"created_at":"2025-05-02T23:53:04+03:00","updated_at":"2025-05-02T23:53:05+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_slate_blue.jpg?v=1746219185","variant_ids":[49941499314461,49941499347229,49941499379997]},"available":true,"name":"Alterra - Segment Slate Blue \/ X-Small \/ Small","public_title":"Segment Slate Blue \/ X-Small \/ Small","options":["Segment Slate Blue","X-Small \/ Small"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"659061851177.00","featured_media":{"alt":null,"id":53021421306141,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_slate_blue.jpg?v=1746219185"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499347229,"title":"Segment Slate Blue \/ Medium \/ Large","option1":"Segment Slate Blue","option2":"Medium \/ Large","option3":null,"sku":"15-0116","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016434461,"product_id":9833651634461,"position":3,"created_at":"2025-05-02T23:53:04+03:00","updated_at":"2025-05-02T23:53:05+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_slate_blue.jpg?v=1746219185","variant_ids":[49941499314461,49941499347229,49941499379997]},"available":true,"name":"Alterra - Segment Slate Blue \/ Medium \/ Large","public_title":"Segment Slate Blue \/ Medium \/ Large","options":["Segment Slate Blue","Medium \/ Large"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"659061851191.00","featured_media":{"alt":null,"id":53021421306141,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_slate_blue.jpg?v=1746219185"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499379997,"title":"Segment Slate Blue \/ X-Large \/ XX-Large","option1":"Segment Slate Blue","option2":"X-Large \/ XX-Large","option3":null,"sku":"15-0118","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016434461,"product_id":9833651634461,"position":3,"created_at":"2025-05-02T23:53:04+03:00","updated_at":"2025-05-02T23:53:05+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_slate_blue.jpg?v=1746219185","variant_ids":[49941499314461,49941499347229,49941499379997]},"available":true,"name":"Alterra - Segment Slate Blue \/ X-Large \/ XX-Large","public_title":"Segment Slate Blue \/ X-Large \/ XX-Large","options":["Segment Slate Blue","X-Large \/ XX-Large"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"0659061851214","featured_media":{"alt":null,"id":53021421306141,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_slate_blue.jpg?v=1746219185"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499412765,"title":"Segment Military Green \/ X-Small \/ Small","option1":"Segment Military Green","option2":"X-Small \/ Small","option3":null,"sku":"15-0124","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016336157,"product_id":9833651634461,"position":2,"created_at":"2025-05-02T23:53:01+03:00","updated_at":"2025-05-02T23:53:02+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_segment_green.jpg?v=1746219182","variant_ids":[49941499412765,49941499445533,49941499478301]},"available":true,"name":"Alterra - Segment Military Green \/ X-Small \/ Small","public_title":"Segment Military Green \/ X-Small \/ Small","options":["Segment Military Green","X-Small \/ Small"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"659061851238.00","featured_media":{"alt":null,"id":53021421240605,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_segment_green.jpg?v=1746219182"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499445533,"title":"Segment Military Green \/ Medium \/ Large","option1":"Segment Military Green","option2":"Medium \/ Large","option3":null,"sku":"15-0126","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016336157,"product_id":9833651634461,"position":2,"created_at":"2025-05-02T23:53:01+03:00","updated_at":"2025-05-02T23:53:02+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_segment_green.jpg?v=1746219182","variant_ids":[49941499412765,49941499445533,49941499478301]},"available":true,"name":"Alterra - Segment Military Green \/ Medium \/ Large","public_title":"Segment Military Green \/ Medium \/ Large","options":["Segment Military Green","Medium \/ Large"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"659061851252.00","featured_media":{"alt":null,"id":53021421240605,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_segment_green.jpg?v=1746219182"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":49941499478301,"title":"Segment Military Green \/ X-Large \/ XX-Large","option1":"Segment Military Green","option2":"X-Large \/ XX-Large","option3":null,"sku":"15-0128","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016336157,"product_id":9833651634461,"position":2,"created_at":"2025-05-02T23:53:01+03:00","updated_at":"2025-05-02T23:53:02+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_segment_green.jpg?v=1746219182","variant_ids":[49941499412765,49941499445533,49941499478301]},"available":true,"name":"Alterra - Segment Military Green \/ X-Large \/ XX-Large","public_title":"Segment Military Green \/ X-Large \/ XX-Large","options":["Segment Military Green","X-Large \/ XX-Large"],"price":44900,"weight":2041,"compare_at_price":null,"inventory_management":"shopify","barcode":"659061851276.00","featured_media":{"alt":null,"id":53021421240605,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_segment_green.jpg?v=1746219182"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}]

{"id":49941499117853,"title":"Solid Matte Black \/ X-Small \/ Small","option1":"Solid Matte Black","option2":"X-Small \/ Small","option3":null,"sku":"15-0004","requires_shipping":true,"taxable":true,"featured_image":{"id":61702016237853,"product_id":9833651634461,"position":1,"created_at":"2025-05-02T23:52:57+03:00","updated_at":"2025-05-02T23:52:59+03:00","alt":null,"width":1200,"height":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_matte_black.jpg?v=1746219179","variant_ids":[49941499117853,49941499150621,49941499183389]},"available":true,"name":"Alterra - Solid Matte Black \/ X-Small \/ Small","public_title":"Solid Matte Black \/ X-Small \/ Small","options":["Solid Matte Black","X-Small \/ Small"],"price":44900,"weight":1361,"compare_at_price":null,"inventory_management":"shopify","barcode":"659061851054.00","featured_media":{"alt":null,"id":53021421175069,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/eu.6dhelmets.com\/cdn\/shop\/files\/alterra_matte_black.jpg?v=1746219179"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}

Alterra

Designed and engineered with the singular goal of building the safest Enduro helmet possible.

KEY FEATURES

ONLY 6D HAS ODS™

6D’s Omni-Directional Suspension™ technology is an active, in-helmet suspension and energy management system that is only found in 6D Helmets.

learn more

new

Two Piece Shell Design

The carbon fiber and polycarbonate two-piece shell, featuring a carbon fiber chinbar and internal skeleton, provides overall structural integrity and enhances the chinbar's durability in high-velocity impacts.

All Day Comfort

At just 710g (M/L), the Alterra enduro helmet is one of the lightest on the market, offering enhanced performance without compromising impact protection, structural integrity, or build quality.

SAFETY TECHNOLOGY

5-Star Virginia Tech rated and E-Bike Certified, the Alterra incorporates our 5th generation Omni-Directional Suspension system. Our award winning technology provides unmatched performance in Low Speed, Angular and High Velocity impacts encapsulated in a lightweight, fully ventilated trail helmet.