We have searched the web to unearth the best Cyber Monday mountain bike helmet deals: open face, trail, super vented, deep coverage, MIPS... all options covered.


Cyber Monday time is most definitely the best time to bag yourself a bargain MTB lid. Whether it’s time to retire your venerable current helmet or your looking for something to use during winter, this page will have something to tick your box. Our helmet deals round-ups are always super popular and this is our Cyber Monday Special Edition.

Read more: Best mountain bike helmets 2021, open-face or half-shell


Listed below are the very best helmet deals on offer from the best online bike retailers right now. All these helmet deals have at least 25% knocked off the SRP. Not only that but (at the time of writing) all these helmets were available at sale price in multiple size and colourway options.

‘View deal’ links

You will notice that beneath each product summary is a ‘View deal’ link. If you click on one of these links then mbr may receive a small amount of money from the retailer should you go to purchase the product from them. Don’t worry, this does not affect the amount you pay.

Cyber Monday mountain bike helmet deals US

Leatt DBX 2.0 Was $99.99 Now $74.99

Having a helmet that will reduce both rotational and impact energy directed at your head and brain is even more important. The DBX 2.0 features Leatt’s 360° Turbine Technology with turbines inside the helmet to help reduce rotational acceleration to the head and brain by 40%? View Deal US

Troy Lee Designs A1 MIPS Classic Was $139.99 Now £94.99

This lightweight, fully encapsulated all-mountain helmet utilizes maximum coverage and dimension to keep you safe and protected in all riding conditions. Whether you’re charging single track, riding dirt jumps or grinding out miles on the XC bike, the A1 helmet offers the premium fit, protection and style you want. View Deal US

Sweet Protection Bushwhacker II MIPS Was $219.95 Now $164.96

Sweet Protection believes that safety, style, and comfort can coexist on the trail, so they’ve created the Bushwhacker II MIPS Helmet for aggressive riders seeking a lightweight, well-ventilated lid upgraded with MIPS technology. View Deal US

Limar Delta Was $139.95 Now $104.96

Shell Material: triple-shell polycarbonate. Impact Foam EPS (in-molded). Ventilation: 17 vents, 2 internal airflow channels. Fit Adjustment: AIRFIT retention system (horizontally and vertically adjustable).Visor: 3-position adjustable, goggle compatible. Recommended Use: enduro, trail. View Deal US

Giro Radix MIPS Was $94.95 Now $71.25

The Radix helmet supplies top-notch functionality and durability features at an entry-level price point. MIPS technology diffuses rotational force in the event of a crash, giving you confidence in your equipment and as a result, your riding. View Deal US

Kask Caipi Was $169.99 Now $127.49

Extended coverage over the sides and back of the helmet provides greater protection for mountain biking terrain, while the lightweight visor keeps branches and the sun’s rays at bay. At the back, an Octo Fit dial uses a cradle-like fit adjustment to create an all-around fit for the best support. View Deal US

Giro Tyrant Spherical Was $159.95 Now $119.99

Giro’s new Tyrant is designed to meet the needs of today’s progressive trail riders. Though the style is reminiscent of old-school BMX helmets, it comes equipped with modern safety features like Spherical MIPS and progressive foam layering that handles both high- and low-speed impacts. View Deal US

Bell Sixer MIPS Was $169.95 Now $119.00

As the premier helmet in Bell’s line for trail and enduro, the Sixer MIPS is especially lightweight and well ventilated, thanks to In-Mold construction reducing its overall bulk and allowing massive vents to rapidly disperse heat. View Deal US

Oakley DRT5 Was $200.00 Now $149.96

Made for trail riding and enduro racing. A tough polycarbonate shell molded to a shock-absorbing EPS liner protects against high and low-speed impacts, while the MIPS Brain Protection System guards against harmful rotational forces experienced during certain types of crashes. View Deal US

Cyber Monday mountain bike helmet deals UK

POC Omne Air Spin Resistance Was £140.00 Now £76.99

The helmet to inspire your next adventure. Whether cycling to work, exploring gravel tracks or on the local trails. Optimal liner density and thicker core protection zones provide ideal protection for everyday use, while extended protection around the temples and back of the head increase all-round protection. View Deal UK

Giro Revel Was £45.00 Now £25.00

A helmet equipped to ride it all, from downtown streets to twisting climbs to singletrack trails. The Giro Revel’s confident style, superior ventilation and compact design complement nearly any ride. And it comes in a highly visible yellow colourway.  View Deal UK

MET Crossover Was £50.00 Now £30.00

A versatile two in one solution for everyday cyclists and track riders, providing a great fit for every terrain. Two helmets in one, Met’s Crossover uses an invisible Clip-on-Anchor system that lets you transform the helmet from casual street to multi-terrain-ready with a rugged visor extension. View Deal UK

Catlike Vacuum Was £79.99 Now £34.00

A bike helmet that will keep you cool and safe, designed using advanced technologies. The Catlike Vacuum Helmet uses their patented Air Tube System, made by hollow and elastic tubes full of air that create a inner mesh for safety in an impact situation. View Deal UK

Endura Hummvee Was £40.99 Now £28.99 | Was $??

Such a great looking fully featured trail lid at a killer price. It has modern styling a list of features and low rear coverage offering extra protection that is typically found in helmets twice this price. The visor is removable making it double up as a great urban helmet too. View Deal UK

Lazer Impala Was £99.99 Now £74.99

Featuring a large adjustable visor to allow for goggle parking, as well as a rear shell shape that provides support for your goggle strap, the Impala by Lazer is an incredibly versatile MTB helmet. The bottomshell construction provides a clean finish and adds to the strength of the helmet. View Deal UK

Giant Roost Was £64.99 Now £44.99

A high protection off-road helmet with removable moto-style visor to keep the sun out of your eyes on race day, the Roost was not just built to make you look the part, but feel it too. The comfortable and performance enhancer Roost has GoPro compatibility and integrated magnetic light mounts. View Deal UK

MET Roam Was £130.00 Now £99.00

The back of the head and the temples are especially in need of protection from impact, so increased the coverage around these key areas, without sacrificing the helmet’s light weight. The inner padding has an extended surface area thanks to links between the soft pads, which provides the perfect stability. View Deal UK

Smith Optics Session MIPS Was £139.99 Now £104.99

Koroyd is featured in strategic, zonal impact areas giving riders the confidence they need to charge harder. The top of the helmet has massive airports which combine with internal air channels to allow for maximum airflow and ventilation. View Deal UK

MET Terranova MIPS Was £110.00 Now £82.50

The Terranova comes with internal air channelling and 17 vents to provide a refreshing flow of air and to help keep you from overheating. To increase your low light visibility there’s a reflective rear sticker and the comfort pads are hand washable too. View Deal UK

Scott Groove Plus Was £55.99 Now £39.99

Integrated MIPS® brain protection system and increased head coverage combine to offer class leading impact protection. The clean design and adjustable fit system ensure you look and feel great wherever you ride. View Deal UK

100% Altec Was £139.00 Now £89.00

Conceived from the start to be the ultimate open face helmet for Trail and Enduro use, the 100% Altec uses the sensational fully integrated Smartshock Rotational Protective System to create a helmet that is light, breathable, comfortable and lets you focus on the trail ahead. View Deal UK

Bell Spark Was £59.99 Now £44.00

For the budget-conscious mountain biker, Bell’s Spark helmet is hard to beat. A head-turning design is matched by impeccable protection should you test your limits a bit too much. Designed for the keen trail rider, the Spark Helmet makes use of Bell’s pioneering Fusion In-Mold system. View Deal UK

Leatt MTB 2.0 Was £79.99 Now £47.99

When it comes to trail-ready mountain bike head protection, there’s little to match the Leatt MTB 2.0 Helmet. Packed with features, including brain-protecting 360-degree Turbine Technology, you can go full-gas and be confident you’re covered should it all go wrong. View Deal UK

IXS Trail EVO Was £89.99 Now £53.99

This in-mould tech sees a tough and durable outer shell directly moulded to an impact-absorbing foam inner. This provides both excellent structural strength as well as head-protection in the event of a crash. Available in this dark red colourway and also in black.  View Deal UK

Mountain bike helmet deals don’t last forever

The intrinsic nature of sales is that they don’t last forever. They are on for a limited time; either the stock sells out and there’s none left, or the price goes back up again once the sales promotion is over. In other words, check the date when this story was published (see top of page, publication dates is listed next to the author name) to see when these deals were announced and act fast.