Bell 5Fifty SOLID Spherical MIPS MTB Helmet
The Bell 5Fifty SOLID Spherical MIPS MTB Helmet brings Bell's most advanced rotational impact protection technology to a trail helmet designed for riders who tackle everything from flowing XC singletrack to aggressive enduro terrain. Spherical Technology™, powered by MIPS®, uses a Ball-and-Socket design that allows the outer liner to rotate around the inner liner during a crash, helping to redirect impact forces away from the brain — a significant step up from standard MIPS in protection and fit. Progressive Layering uses variable-density EPS foam to better manage impact energy across a wider range of crash speeds, and Dual Flow Ventilation™ ensures you stay cool no matter the pace. Overbrow Ventilation actively ushers cool air in through the brow ports and circulates it through internal channels. With a Float Fit Race™ retention system, Fidlock® magnetic buckle, and GoggleGuide™ adjustable visor, the 5Fifty Spherical is a premium trail lid that doesn't ask you to compromise. The clean SOLID colourway suits any kit.
- Spherical Technology™ powered by MIPS® — Ball-and-Socket design allows the outer liner to rotate around the inner liner in an impact to help redirect forces away from the brain
- Progressive Layering™ with variable-density EPS foam manages energy across a wider range of impact speeds
- Fusion In-Mold Polycarbonate Shell for a lightweight, durable construction
- Dual Flow Ventilation™ and Overbrow Ventilation™ actively draw cool air in through the brow ports and circulate it through internal air channels
- Float Fit Race™ retention system with three-way adjustability: height, pad width, and tension — integrated with MIPS
- GoggleGuide™ adjustable visor for sun protection and convenient goggle storage on the trail
- Fidlock® magnetic buckle for easy, one-handed, rattle-free closure
- Sweat Guide™ pad design pulls moisture away from the brow; Ionic+™ antimicrobial padding uses silver yarn for odour control
- Certifications: CE EN 1078, US CPSC, NTA 8776 (e-bike), AS/NZ 2063












