Best Kids Bike Helmets 2026: Three MIPS Picks Compared
Compare the best kids bike helmets for 2026, including fit systems, ventilation, MIPS protection, sizing and practical limits for young riders.
Disclosure: As an Amazon Associate, I earn from qualifying purchases.
Prices and availability are accurate as of the time of publication and are subject to change.
Best Kids Bike Helmets 2026
The Bell Sidetrack II MIPS is our best kids bike helmet for 2026 because it combines a protective MIPS layer, a practical dial fit system and details that make daily strap adjustment less fussy. A helmet only helps when it fits correctly every ride, so our comparison puts measured head circumference and adjustment range ahead of color or age labels.
Best kids bike helmets: the short answer
We compared these three MIPS-equipped models as research-based options for children riding to school, on paths and on family weekend rides. All three use an adjustable retention system, but they solve different fit problems. The Bell is the balanced choice for families who want ventilation, a visor and strap hardware designed to stay organized. The Scamp is the more focused option for smaller riders because Giro pairs its Roc Loc Jr. system with a child-specific shape and eight vents. The Tremor is the choice to consider when one-handed adjustment and a broad Universal Fit approach matter most.
| Product | Best for | Price |
|---|---|---|
| Bell Sidetrack II MIPS | Best overall | View |
| Giro Scamp MIPS II | Best for smaller riders | View |
| Giro Tremor MIPS | Best for easy adjustment | View |
What matters before choosing a kids helmet
The right size is not an age guess. Bell lists Universal Youth at 47 to 54 cm and Universal Child at 50 to 57 cm for the Sidetrack II, but the overlap is a reminder to measure rather than assume. A child at the boundary may fit one shell better than another even when both labels appear suitable. Try the helmet with the rear dial relaxed first, settle it level above the eyebrows, then tighten the dial until it is secure without pressure points. The side straps should meet just below each ear and the buckle should leave room for one finger, not a loose hand.
MIPS is another useful comparison point, not a substitute for fit. Each pick here includes a MIPS slip-plane system intended to help manage rotational movement in certain impacts. That does not make any helmet impact-proof or suitable after a crash. Replace a helmet after an impact, follow the maker's instructions and never buy a helmet that a child has already outgrown simply because it is still adjustable.
Ventilation and coverage deserve a realistic look. More vents can help on warm rides, while a visor can be welcome on trails or in low sun. Neither feature is more important than a stable fit. Parents should also think about the ride itself: a short school route often rewards quick, repeatable adjustment, while a child who spends time on uneven paths may appreciate a visor and straps that stay flat under a moving jacket hood.
Bell Sidetrack II MIPS: best overall
Bell Sidetrack II MIPS
The Bell Sidetrack II MIPS earns the overall badge because its feature set addresses the small fit chores that determine whether a child will wear a helmet correctly. Bell specifies a Fusion In-Molding polycarbonate shell bonded to the EPS liner, integrated MIPS, 14 vents and an Ergo Fit dial that no longer needs a push before turning. Its No-Twist Tri-Glides are intended to keep the straps flat, while the Sweat Guide directs moisture away from the brow and eyewear. This is the pick for a family sharing school rides, neighborhood loops and occasional trails, especially when the child benefits from a visor-style youth helmet with a rear dial. The limitation is sizing: Bell offers overlapping 47 to 54 cm and 50 to 57 cm ranges, so parents must measure and check shell comfort rather than selecting by age alone.
Pros
- Fourteen vents give the Sidetrack II a notably airy configuration for warm school or path rides.
- No-Twist Tri-Glides help keep the side straps flat below the ears after repeated adjustment.
- The Ergo Fit dial can be turned without the old push-to-turn step.
Cons
- The overlapping 47-54 cm and 50-57 cm ranges still require a careful head measurement and try-on.
- A visor-oriented shell is less discreet for families who want a simple skate-style look.
Giro Scamp MIPS II: best for smaller riders
Giro Scamp MIPS II
The Giro Scamp MIPS II is the more targeted choice for a smaller child who needs a secure, uncomplicated fit before anything else. Giro lists its MIPS system, an adjustable Roc Loc Jr. retention system and eight vents; the dial changes both vertical position and tension, which is useful when the helmet sits too high or leaves an uneven gap at the forehead. The listing also states compliance with the US CPSC bicycle helmet standard for people age one and older and notes extended head protection. Choose the Scamp for a young rider whose head shape responds well to Giro's child-focused fit and who rides mostly in temperate weather or shorter sessions. Its real tradeoff is airflow: eight vents are fewer than Bell's 14, so it is not the obvious first pick for the hottest rides.
Pros
- Roc Loc Jr. adjusts vertical position as well as tension, helping correct a helmet that sits too high.
- The listing identifies CPSC compliance for riders age one and older with extended head protection.
- Eight vents keep the shell layout simple for everyday riding.
Cons
- With eight vents, it offers less stated ventilation than the 14-vent Bell option.
- A child must still try the Giro shell shape because a dial cannot fix a poor shell match.
Giro Tremor MIPS: best for easy adjustment
Giro Tremor MIPS
The Giro Tremor MIPS is built around adjustment convenience. Its Roc Loc Sport system is described as one-hand operable with a 7 cm adjustment range and a positive clicking feel, while the listing also notes ponytail compatibility. Giro combines that system with integrated MIPS and a two-piece hard shell with an in-mold polycarbonate lower wrap fused to the liner. The Universal Fit approach makes this a sensible option for a household that wants a straightforward helmet to dial in before a ride, particularly for children who resist lengthy strap fiddling. It also has a more trail-ready character than a basic commuter lid. The limitation is that Universal Fit is a sizing strategy, not a guarantee: confirm that the shell sits level and does not move when the child opens their mouth or shakes their head.
Pros
- Roc Loc Sport offers one-handed adjustment and a stated 7 cm range for repeatable fit checks.
- Ponytail compatibility can make the rear retention system easier to use for some children.
- The hard shell and in-mold lower wrap combine durable outer coverage with a fused liner construction.
Cons
- Universal Fit does not remove the need to check the helmet's level position and stability in person.
- The trail-focused profile may be more helmet than necessary for a child who only rides short paved routes.
How we would choose between them
Pick the Bell Sidetrack II MIPS when you want the strongest all-round package and your child fits one of its measured ranges. The 14-vent layout, flat-strap hardware and sweat-management detail give it practical advantages that matter over many rides. Pick the Giro Scamp MIPS II when a smaller rider needs the vertical adjustment of Roc Loc Jr. and you prefer its CPSC-listed child-focused specification. Pick the Giro Tremor MIPS when easy one-handed dial adjustment, a 7 cm adjustment range and ponytail compatibility are the deciding details.
FAQ
How do I measure a child for a bike helmet?
Wrap a flexible tape around the widest part of the head, about one inch above the eyebrows and ears, and record the circumference in centimeters. Compare that number with the product's stated range, then fit the actual helmet level on the forehead. The dial can fine-tune tension, but it cannot make an overly small or oversized shell safe.
Is MIPS more important than the fit system?
Both matter, but fit comes first. MIPS is designed to help manage rotational movement in certain impacts, while the retention system keeps the helmet correctly positioned before an impact occurs. Choose a MIPS model only after confirming that the shell, rear dial and straps hold it level and comfortably on the child's head.
When should a kids bike helmet be replaced?
Replace it after a crash, after any damage to the shell or liner, or when the child no longer fits the stated size range. Also replace a helmet with worn straps, a broken buckle or a dial that no longer holds tension. Follow the manufacturer's care instructions and do not store the helmet where high heat can damage materials.
Prices and availability are accurate as of publication and can change.