Your next buying step
Giro Tremor Child
Model: Tremor Child Helmet, US style 100000001400000324 · US configuration
Your choices from the finder

Review the product, then choose a seller
Compare offers for this model
In this child-bike assessment scenario, Tremor Child style 324 uses a Universal Child interval of 47–54 cm and therefore includes 49 cm. Giro documents Roc Loc Sport adjustment, 18 vents and 315 g for UC; the exact page does not name Mips or state CPSC.
Search this model on Amazon ↗Compare the exact model, package, seller, current price and return terms. Search results can include other versions.
As an Amazon Associate I earn from qualifying purchases. This is an affiliate link.
Assessment scenario: Assessment scenario: child bike fit at the shared 49 cm boundary
Assessment scenario only, not an assertion of your intent: a child riding a bicycle with a measured 49 cm head circumference. The reviewed child charts place two Scamp sizes at the shared 49 cm XS/S boundary and both Tremor UC versions within their published range. This is a starting set for exact-model try-on, never a personal fit verdict.
Explore this buying guide ↗Why consider this model?
- The observed US Matte Trench Blue UC configuration is style 324, SKU GR-7202606.
- Giro’s separate bicycle chart maps Universal Child to 47–54 cm, which includes 49 cm.
- The exact page lists one-hand Roc Loc Sport adjustment with a 7 cm range, 18 vents and 315 g for UC.
Tradeoffs to weigh
- The exact US page lists CE EN 1078 but no CPSC statement; the status stays unknown in this library.
- No Mips or Spherical system is named on this exact page; do not carry features over from Tremor Mips Child style 325.
- No individual fit test or independently measured cooling or weight result is available.
Check these before ordering
- Confirm US style 100000001400000324, Universal Child size and the exact offer; the observed Matte Trench Blue configuration is SKU GR-7202606.
- Inspect the actual model and physical labels; do not rely on a neighboring Tremor version’s claims.
- Try the exact helmet on and check fit, strap position and return terms; check seller condition and current recall notices.