SixSixOne 661 Evo AM MTB Cycling Helmet
- ShowProduct Information We chose the best fit system on the planet, the BOA FS360. The original leader in fit, micro-adjusta... read more
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We chose the best fit system on the planet, the BOA FS360. The original leader in fit, micro-adjustability and customization to be sure our helmet fit was the best on the market. With a lifetime warranty on the entire BOA System you are “Dialled In For Life”. In place of standard EPS foam liners we substituted Contego EPS Foam. Contego Foam is superior to EPS foam with far greater impact absorption. In laboratory testing Contego has been shown to decrease energy transmitted during an impact.
- Contego EPS material
- Fidlock closure system
- Light and well-ventilated design through in-molded construction with 15 vents
- Secure and micro-adjustable with the 360˙ Boa®
- Fit System
- Additional protection through extended rear shell coverage
- Precise fit for all with 3 shell sizes
- Plush interior liner made with antimicrobial fabric
Occasionally, without notice, manufacturers change product design and/or specifications.
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How to measure yourself for a helmet
661 helmets are easy to adjust and come in a range of styles and sizes. They are incredibly strong, sturdy and reliable to give you complete peace of mind whilst you're riding.
Please note, all size information is provided as a guide - if you're unsure or need any further assistance you can call us on 01792 799508 ... we're happy to help!
Mountain Bike Helmet Guide
How do I apply for finance?
Spend £99 or more at Tredz and you can spread the cost. Pay monthly over 6-48 months, interest free (dependent on repayment terms and amount).
1Fill your basket with everything you want from Tredz and go to the checkout.
2During checkout, select the finance option you want as your method of payment.
3You will be sent to our finance provider's secure server to complete your application.
4Finance providers PayPal & V12 will use the information provided to make a decision and complete checkout if you are approved.Read more about buying on finance
Buy now, pay 12 months later.
Interest free credit with no deposit. Pay nothing for 3 or 6 months on orders over £850, or 12 months on orders over £1,500* *Not available through PayPal Credit
Flexible finance options
Choose your deposit.
Choose your term.
Lowest monthly cost
for 6 months
Delivery & Guarantee
UK Delivery Information
We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE in the UK, regardless of the size and on all orders over £20.
Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.
Please note that Pre-Order dates can sometimes change due to updated stock information.
Click here for more UK and international delivery information.
Returns & Warranty
It's easy to return a product with our 365 day, hassle free returns.
We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).
Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.
If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.
For more information please visit our Returns & Warranty page.