Kali Protectives

Alchemy | Half Shell Bike Helmet

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  • $120.00
- $-120.00
Thunder Blue
Black | Burgundy

Alchemy Bike Helmet Product Info:

Designed with the trail rider in mind, the Alchemy bike helmet is ready for whatever style of riding you throw at it. From long, knee-busting climbs, to ripping fast descents, the Alchemy will energize you to keep pushing, keep exploring and keep pedaling.

Consumer Reports called the Alchemy a "Top Fit for Mountain Bikers" and scored it 84 out of 85 in their independent testing. The Alchemy uses Kali Protectives Composite Fusion technology and LDL to dissipate any impacts as quickly and efficiently as possible.

It also comes with a Micro-Fit Closure System and 2-Position Height Adjustment.

Weight: 300 g / 10.5 oz

Certification: EN 1078, CPSC

Measure the circumference of your head from the center of your forehead around your head, approximately 1.5cm above your ears. This should be the widest part of your head.

CM 50-54 55-61 60-63
INCHES 19.75-21.25 21.5-24 23.75-24.75

We are a small business and shipping is costly to us. If you are unsure which size to buy after consulting the size charts, and tempted to purchase multiple sizes, please reach out and we'll do our best to guide you into the best size for you. 

A few things you should know about shipping:

  • Some orders are experiencing a delay in ship time due to warehouse and postal staff shortages. Please be patient!

  • We want you to get your goodies as soon as possible but some products ship from outside the USA and can take up to 14 days to arrive (sometimes, not always!).

  • If you're ordering into Canada you may incur import duties.

  • We ship some of our products direct from the brand warehouse. This means if you've ordered products from multiple brands, your order may arrive separately.

  • All products that ship from Canada are shipped via Canada Post or Purolator. Once the product crosses the border you can use the Canada Post tracking # on USPS to track your package. 

  • All products shipped from our warehouse are shipped in reusable, compostable mailers.

Shipping is a flat fee of $10 if you live in the contingent US. $29 if you live in Canada. And $25 if you live in Hawaii. 

Are you in Canada? Feel free to visit our NEW Canadian site and shop in CDN currency with no import fees. 

Still have questions? Email us at or use the chat button in the bottom right-hand corner to send a message.