Bell Helmets Sizing Chart
Adult Road Bike Helmets

Helmet ModelSmallMediumLargeX-LargeUniversal AdultUniversal X-LargeUniversal Women's
Catalyst MIPS52 - 56cm55 - 59cm58 - 62cm
Coast54 - 61cm56 - 63cm50 - 57cm
Draft MIPS54 - 61cm56 - 63cm50 - 57cm
Drifter MIPS52 - 56cm55 - 59cm58 - 62cm
Falcon MIPS52 - 56cm55 - 59cm58 - 62cm61 - 65cm
Formula52 - 56cm55 - 59cm58 - 62cm
Formula MIPS52 - 56cm55 - 59cm58 - 62cm
Gage52 - 56cm55 - 59cm58 - 61cm
Gage MIPS52 - 56cm55 - 59cm58 - 61cm
Hub52 - 56cm55 - 59cm58 - 62cm
Javelin51 - 55cm55 - 59cm59 - 63cm
Soul52 - 56cm55 - 59cm58 - 62cm
Star Pro Shield52 - 56cm55 - 59cm58 - 62cm61 - 65cm
Stratus52 - 56cm55 - 59cm58 - 62cm
Stratus MIPS52 - 56cm55 - 59cm58 - 62cm
Tempo54 - 61cm58 - 63cm50 - 57cm
Traverse54 - 61cm56 - 63cm50 - 57cm
Volt RL52 - 56cm55 - 59cm58 - 62cm61 - 65cm
Volt RL-X52 - 56cm55 - 59cm58 - 62cm61 - 65cm
Z2052 - 56cm55 - 59cm58 - 62cm
Z20 Aero52 - 56cm55 - 59cm58 - 62cm
Z20 Ghost MIPS52 - 56cm55 - 59cm58 - 62cm
Z20 MIPS52 - 56cm55 - 59cm58 - 62cm
Zephyr52 - 56cm55 - 59cm58 - 62cm
Zephyr MIPS52 - 56cm55 - 59cm58 - 62cm


Adult Full Face Bike Helmets

Helmet ModelX-SmallX-Small/SmallSmallMediumLargeX-LargeX-Large/XX-LargeXX-Large
Full-951 - 55cm55 - 57cm57 - 59cm59 - 63cm
Full-9 Fusion51 - 53cm53 - 55cm55 - 57cm57 - 59cm59 - 61cm61 - 63cm
Sanction48 - 51cm52 - 54cm55 - 57cm68 - 60cm
Super 2R52 - 56cm55 - 59cm58 - 62cm
Super 2R MIPS52 - 56cm55 - 59cm58 - 62cm
Super 3R52 - 56cm55 - 59cm58 - 62cm
Super 3R MIPS52 - 56cm55 - 59cm58 - 62cm
Super Air R52 - 56cm55 - 59cm58 - 62cm
Super DH52 - 56cm55 - 59cm58 - 62cm
Super DH MIPS52 - 56cm55 - 59cm58 - 62cm


Adult Mountain Bike Helmets

Helmet ModelX-SmallSmallMediumLargeX-LargeUniversal AdultUniversal X-LargeUniversal Women's
4Forty52 - 56cm55 - 59cm58 - 62cm61 - 65cm
4Forty MIPS52 - 56cm55 - 59cm58 - 62cm61 - 65cm
Annex MIPS52 - 56cm55 - 59cm58 - 62cm61 - 65cm
Chicane54 - 61cm
Coast54 - 61cm56 - 63cm50 - 57cm
Event52 - 56cm55 - 59cm58 - 62cm
Event XC52 - 56cm55 - 59cm58 - 62cm
Event XC MIPS52 - 56cm55 - 59cm58 - 62cm
Hela52 - 56cm55 - 59cm58 - 62cm61 - 65cm
Nomad MIPS53 - 60cm52 - 57cm
Piston54 - 61cm
Sanction (F/F)48 - 51cm52 - 54cm55 - 57cm68 - 60cm53 - 60cm52 - 57cm
Segment52 - 56cm55 - 59cm58 - 62cm
Sixer52 - 56cm55 - 59cm58 - 62cm61 - 65cm
Sixer MIPS52 - 56cm55 - 59cm58 - 62cm61 - 65cm
Slant54 - 61cm
Soul52 - 56cm55 - 59cm58 - 62cm
Spark54 - 61cm58 - 63cm50 - 57cm
Spark MIPS54 - 61cm58 - 63cm50 - 57cm
Super 252 - 56cm55 - 59cm58 - 62cm
Super 2 MIPS52 - 56cm55 - 59cm58 - 62cm
Super 2R (F/F)52 - 56cm55 - 59cm58 - 62cm
Super 2R MIPS (F/F)52 - 56cm55 - 59cm58 - 62cm
Super Air52 - 56cm55 - 59cm58 - 62cm
Traverse54 - 61cm56 - 63cm50 - 57cm


Youth Bike Helmets

Helmet ModelToddlerUniversal ChildUniversal Youth
Lil Ripper (BMX)45 - 51cm47 - 54cm
Nomad JR MIPS52 - 57cm
Sidetrack (MTB)47 - 54cm50 - 57cm
Sidetrack II45 - 52cm47 - 54cm50 - 57cm
Sidetrack MIPS47 - 54cm50 - 57cm
Spark JR50 - 57cm
Spark Youth MIPS50 - 57cm


BMX & Skate Helmets

Helmet ModelX-SmallSmallMediumLargeX-Large/XX-LargeXX-Large
Block49 - 53cm51 - 55cm55 - 59cm59 - 61.5cm
Division51 - 55cm55 - 59cm59 - 61.5cm
Full Flex52 - 56cm55 - 59cm58 - 62cm
Full-9 (F/F)51 - 55cm (XS/SML)55 - 57cm57 - 59cm59 - 63cm
Full-9 Fusion (F/F)51 - 53cm53 - 55cm55 - 57cm57 - 59cm61 - 63cm
Local51 - 55cm55 - 59cm59 - 61.5cm
Sanction (F/F)48 - 51cm52 - 54cm55 - 57cm68 - 60cm
Segment52 - 56cm55 - 59cm58 - 62cm
Segment JR48 - 53cm51 - 56cm55 - 59cm59 - 61.5cm
Span49 - 53cm51 - 55cm


How To Determine Your Size

— Helmets —How To Measure
Head Circumference:"Measure the circumference of your head at a spot approx 2 cm (+/- 1 inch) above the eyebrows. Choose the helmet size most closely matching your head’s circumference in the size chart. "
MIPS Helmet Choice:Please note: MIPS equipped helmets fit slightly tighter than standard helmets, so if you are near the upper limit, consider buying a larger size.


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