Head-to-head · Best Bike Helmets

Bell Formula LED MIPS Ghost vs Smith Signal

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

Verdict is reader-supported. As an Amazon Associate we earn from qualifying purchases. Some links on this page are affiliate links — if you click through and buy, we may earn a small commission at no extra cost to you. Our ratings are sourced from independent publications, not sponsors.

The short answer

Bell Formula LED MIPS Ghost comes out ahead by a clear margin (4.5 vs 4.0). The gap is mostly about commuters who need high visibility features without sacrificing safety — read the strengths below before deciding.

Higher ratedRanked #3 in Best Bike Helmets

Bell Formula LED MIPS Ghost

4.5

6 sources1 derived$83.97as of Oct 2

Consumer Reports awarded the Bell Formula LED MIPS Ghost an overall score of 86, praising its balance of safety and functionality. Cycling Weekly noted that the helmet provides a secure, head-hugging fit with excellent ventilation from its 19 vents, though they flagged its weight as a drawback compared to lighter competitors. 220 Triathlon highlighted how integrating the MIPS technology into the retention system maintains a low profile while offering multi-directional impact protection. This all-rounder is best suited for riders seeking high visibility and reliable safety features without breaking the bank, whereas those prioritizing ultra-lightweight performance might look elsewhere.

Strengths

— Integrated Mips slip plane reduces rotational forces while keeping weight and profile down by being built into the retention system.
— 20-lumen rear LED is unobtrusive, highly visible, and rechargeable via a micro USB port included with the helmet.
— Fusion In-Mold polycarbonate shell creates a sturdier, slicker, and more durable finish than standard helmets.

Watch-outs

— Weight is heavier than premium aero options, with sources citing figures between 285g and 303g depending on size.
— Straps may require cutting down to fit properly for some users despite having No-Twist Tri-Glides.

$83.97 · Check Price on Amazon Full review →

Ranked #6 in Best Bike Helmets

Smith Signal

4.0

6 sources2 derived$95as of Oct 2

Cycling Weekly found that the Smith Signal MIPS delivers essential rotational impact protection via its MIPS liner while omitting premium Koroyd to maintain an accessible price point. Road Bike Rider confirmed that the VaporFit dial offers a secure, customizable fit and that the AirEvac ventilation effectively prevents lens fogging during exertion. However, reviewers noted significant aesthetic compromises, describing the boxy styling as resembling a toddler helmet and criticizing the strap weave for being less soft than higher-end models. The absence of an included storage bag further highlights its budget positioning. This helmet suits commuters and casual riders who prioritize function over form, while those seeking sleek aerodynamic designs or advanced zonal protection should look elsewhere.

Strengths

— Includes MIPS liner to reduce rotational forces from angled impacts
— VaporFit retention system provides a secure, customizable fit with rotary dial adjustment
— AirEvac ventilation system vents warm air away from eyewear lenses to prevent fogging

Watch-outs

— Boxy and chunky styling described as basic or resembling a toddler helmet
— Straps feature a thicker weave that is less soft than premium models
— Does not include a storage bag at this price point

$95 · Buy at smithoptics.com Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

Bell Formula LED MIPS Ghost

The Bell Formula LED MIPS Ghost distinguishes itself from the Giro Aries Spherical and Smith Signal by integrating a rechargeable rear LED for enhanced visibility, a feature absent in those models. While it offers robust safety via integrated MIPS, its weight of 285g-303g makes it significantly heavier than the ultralight Trek Velocis Mips (240g) and slightly heavier than the Smith Signal (256g).

Smith Signal

The Smith Signal is lighter than the Bell Formula (256g vs 285g+) and Met Downtown (256g vs 280g), while matching the lower end of the Giro Aries weight range. It uses a VaporFit rotary dial system, differing from the BOA systems in the Trek Velocis and Spherical MIPS technology found in the Giro Aries.

Specs side-by-side

Spec	Bell Formula LED MIPS Ghost	Smith Signal
Weight	285g	9oz/256g
Ventilation	19	21 vents with AirEvac system
Safety Certification	US CPSC	CPSC and CE EN 1078 certified, AS/NZS263 certified
Fit System	Float Fit LED with MIPS	VaporFit rotary dial
Shell Material	Fusion In-Mold Polycarbonate	—
Safety Technology	MIPS Evolve	MIPS liner
Size	S, M, L	—
Visor	Integrated visor	—

← See the full ranking of best bike helmets