Bell Helmets Size Chart

MOTORCYCLE
               
These size charts and conversions are meant to serve as a guide. We recommend you try on before riding to ensure full comfort and performance.
               
Model(s): CUSTOM 500    
         
Helmet  
SIZE CM IN HAT SIZE (IN)  
XS 53–54 20 7/8 – 21 1/4 6 5/8 – 6 3/4  
S 55–56 21 5/8 – 22 6 7/8–7  
M 57–58 22 3/8 – 22 3/4 7 1/8–7 1/4  
L 59–60 23 1/8 – 23 1/2 7 3/8 – 7 1/2  
XL 61–62 23 7/8 – 24 1/4 7 5/8 – 7 3/4  
XXL 63–64 24 5/8 – 25 7 7/8 – 8  
         
Model(s): BROOZER      
               
Helmet   Cheek Pad
SIZE CM IN        HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 54–55 21 1/4–21 5/8 6 3/4–6 7/8   XS 35 INTERCHANGEABLE (XS–XXL)
S 55–56 21 5/8–22 6 7/8–7   S 40 INTERCHANGEABLE (XS–XXL)
M 57–58 22 1/2–22 3/4 7 1/8–7 1/4   M 45 INTERCHANGEABLE (XS–XXL)
L 58–59 22 3/4–23 1/4 7 1/4–7 3/8   L 50 INTERCHANGEABLE (XS–XXL)
XL 60–61 23 5/8–24 7 1/2–7 5/8   XL 55 INTERCHANGEABLE (XS–XXL)
XXL 62–63 24 1/2–24 3/4 7 3/4–7 7/8   XXL 60 INTERCHANGEABLE (XS–XXL)
               
Model(s): BULLITT            
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 54–55 21 1/4–21 5/8 6 3/4–6 7/8   XS 35 INTERCHANGEABLE (XS–XXL)
S 55–56 21 5/8–22 6 7/8–7   S 30 INTERCHANGEABLE (XS–XXL)
M 57–58 22 1/2–22 3/4 7 1/8–7 1/4   M 30 INTERCHANGEABLE (XS–XXL)
L 58–59 22 3/4–23 1/4 7 1/4–7 3/8   L 25 INTERCHANGEABLE (XS–XXL)
XL 60–61 23 5/8–24 7 1/2–7 5/8   XL 30 INTERCHANGEABLE (XS–XXL)
XXL 62–63 24 1/2–24 3/4     XXL 25 INTERCHANGEABLE (XS–XXL)
               
Model(s): EMLIMINATOR, ELIMINATOR CARBON        
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 53–54 20 7/8–21 5/8 6 5/8–6 3/4   XS 45 INTERCHANGEABLE (XS–M)
S 55–56 21 5/8–22 6 7/8–7   S 40 INTERCHANGEABLE (XS–M)
M 57–58 22 1/2–22 7/8 7 1/8–7 1/4   M 35 INTERCHANGEABLE (XS–M)
M/L 58–59 22 7/8–23 1/4 7 1/4–7 3/8   M/L 40 INTERCHANGEABLE (M/L–XL)
L 59–60 23 1/4–23 5/8 7 3/8–7 1/2   L 40 INTERCHANGEABLE (M/L–XL)
XL 61–62 24– 24 3/8 7 1/2–7 5/8   XL 35 INTERCHANGEABLE (M/L–XL)
XXL 63–64 24 3/4–25 1/4 7 3/4–7 7/8   XXL 30 INTERCHANGEABLE (XXL–XXXL)
XXXL 65–66 25 5/8–26 8 1/8–8 1/4   XXXL 25 INTERCHANGEABLE (XXL–XXXL)
               
Model(s): MAG–9            
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 54–55 21 1/4–21 5/8 6 3/4–6 7/8   XS 50 INTERCHANGEABLE (XS–XXL)
S 55–56 21 5/8–22 6 7/8–7   S 40 INTERCHANGEABLE (XS–XXL)
M 57–58 22 1/2–22 3/4 7 1/8–7 1/4   M 45 INTERCHANGEABLE (XS–XXL)
L 58–59 22 3/4–23 1/4 7 1/4–7 3/8   L 35 INTERCHANGEABLE (XS–XXL)
XL 60–61 23 5/8–24 7 1/2– 7 5/8   XL 40 INTERCHANGEABLE (XS–XXL)
XXL 62–63 24 1/2–24 3/4 7 3/4–7 7/8   XXL 30 INTERCHANGEABLE (XS–XXL)
               
Model(s): MOTO–10 SPHERICAL          
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 54–55 21 1/4–21 5/8 6 3/4–6 7/8   XS 45 INTERCHANGEABLE (XS–XXL)
S 55–56 21 5/8–22 6 7/8–7   S 40 INTERCHANGEABLE (XS–XXL)
M 57–58 22 1/2–22 3/4 7 1/8–7 1/4   M 40 INTERCHANGEABLE (XS–XXL)
L 58–59 22 3/4–23 1/4 7 1/4–7 3/8   L 35 INTERCHANGEABLE (XS–XXL)
XL 60–61 23 5/8–24 7 1/2–7 5/8   XL 35 INTERCHANGEABLE (XS–XXL)
XXL 61–62 24–24 1/2 7 3/4–7 7/8   XXL 30 INTERCHANGEABLE (XS–XXL)
               
Model(s): MOTO–3            
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 53–54 20 3/4–21 1/4 6 5/8–6 3/4   XS 30 INTERCHANGEABLE (S–XXL)
S 55–56 21 5/8–22 6 7/8–7   S 25 INTERCHANGEABLE (S–XXL)
M 57–58 22 1/2–22 3/4 7 1/8–7 1/4   M 20 INTERCHANGEABLE (S–XXL)
L 59–60 23 1/4–23 5/8 7 3/8–7 1/2   L 35 INTERCHANGEABLE (S–XXL)
XL 61–62 24–24 1/2 7 5/8–7 3/4   XL 30 INTERCHANGEABLE (S–XXL)
XXL 63–64 24 3/4–25 1/4 7 7/8–8   XXL 25 INTERCHANGEABLE (S–XXL)
               
Model(s): MOTO–9 FLEX, MOTO–9 MIPS          
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 54–55 20 7/8–21 5/8 6 3/4–6 7/8   XS 45 INTERCHANGEABLE (XS–XXL)
S 55–56 21 5/8–22 6 7/8–7   S 40 INTERCHANGEABLE (XS–XXL)
M 57–58 22 1/2–22 3/4 7 1/8–7 1/4   M 40 INTERCHANGEABLE (XS–XXL)
L 58–59 22 3/4–23 1/4 7 1/4–7 3/8   L 35 INTERCHANGEABLE (XS–XXL)
XL 60–61 23 5/8–24 7 1/2–7 5/8   XL 35 INTERCHANGEABLE (XS–XXL)
XXL 62–63 24 1/2–24 3/4 7 3/4–7 7/8   XXL 30 INTERCHANGEABLE (XS–XXL)
               
Model(s): MOTO–9 YOUTH MIPS          
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
S/M 49–51 19 1/4–20 6 1/8–6 3/8   S/M 60 INTERCHANGEABLE (55 & 65 MM)
L/XL 51–53 20–20 7/8 6 3/8–6 5/8   L/XL 50 INTERCHANGEABLE (55 & 65 MM)
               
Model(s): MX–9 MIPS, MX–9 ADVENTURE MIPS        
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 53–54 20 7/8–21 5/8 6 5/8–6 3/4   XS 40 INTERCHANGEABLE (XS–XXXL)
S 55–56 21 5/8–22 6 7/8–7   S 35 INTERCHANGEABLE (XS–XXXL)
M 57–58 22 1/2–22 3/4 7 1/8–7 1/4   M 40 INTERCHANGEABLE (XS–XXXL)
L 59–60 22 3/4–23 1/4 7 1/4–7 3/8   L 35 INTERCHANGEABLE (XS–XXXL)
XL 61–62 23 5/8–24 7 1/2–7 5/8   XL 35 INTERCHANGEABLE (XS–XXXL)
XXL 63–64 24 1/2–24 3/4 7 3/4–7 7/8   XXL 30 INTERCHANGEABLE (XS–XXXL)
XXXL 65–66 25 5/8–26 8 1/8–8 1/4   XXXL 25 INTERCHANGEABLE (XS–XXXL)
               
Model(s): PIT BOSS        
         
Helmet  
SIZE CM IN HAT SIZE (IN)  
XS/S 53–56 20 3/4–21 5/8 6 5/8–7  
M 56–58 22–22 3/4 7–7 1/4  
L 58–60 22 3/4–23 5/8 7 1/4–7 1/2  
XL/XXL 62–63 24–24 3/4 7 5/8–7 7/8  
XXXL 63–64 24 3/4–25 1/4 7 7/8–8  
         
Model(s): QUALIFIER, QUALIFER DLX MIPS, QUALIFIER FORCED AIR    
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 53–54 20 7/8–21 1/8 6 5/8–6 3/4   XS 40 INTERCHANGEABLE (XS–XXXL)
S 55–56 21 1/2–21 7/8 6 7/8–7   S 35 INTERCHANGEABLE (XS–XXXL)
M 57–58 22 1/4–22 5/8 7 1/8–7 1/4   M 40 INTERCHANGEABLE (XS–XXXL)
L 59–60 23–23 1/2 7 3/8–7 1/2   L 35 INTERCHANGEABLE (XS–XXXL)
XL 61 – 62 23 7/8–24 1/2 7 5/8–7 3/4   XL 40 INTERCHANGEABLE (XS–XXXL)
XXL 63–64 24 5/8–25 7 7/8–8   XXL 35 INTERCHANGEABLE (XS–XXXL)
XXXL 65–66 25 1/2–26 8 1/8–8 1/4   XXXL 20 INTERCHANGEABLE (XS–XXXL)
               
Model(s): RS–2            
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 54–55 21 1/8–21 1/2 6 3/4–6 7/8   XS 40 INTERCHANGEABLE (XS–XXL)
S 55–56 21 1/2–21 7/8 6 7/8–7   S 35 INTERCHANGEABLE (XS–XXL)
M 57–58 22 1/4–22 5/8 7 1/8–7 1/4   M 40 INTERCHANGEABLE (XS–XXL)
L 58–59 22 5/8–23 7 1/4–7 3/8   L 35 INTERCHANGEABLE (XS–XXL)
XL 60–61 23 1/2–23 7/8 7 1/2–7 5/8   XL 40 INTERCHANGEABLE (XS–XXL)
XXL 62–63 24 1/4–24 5/8 7 3/4–7 7/8   XXL 35 INTERCHANGEABLE (XS–XXL)
               
Model(s): RACE STAR DLX FLEX          
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 53–54 20 7/8–21 5/8 6 5/8–6 3/4   XS 35 INTERCHANGEABLE (XS–XXL)
S 55–56 21 1/2–21 7/8 6 7/8–7   S 30 INTERCHANGEABLE (XS–XXL)
M 57–58 22 1/4–22 5/8 7 1/8–7 1/4   M 30 INTERCHANGEABLE (XS–XXL)
L 59–60 23–23 1/2 7 3/8–7 1/2   L 30 INTERCHANGEABLE (XS–XXL)
XL 61–62 23 5/8–24 1/4 7 5/8–7 3/4   XL 30 INTERCHANGEABLE (XS–XXL)
XXL 63–64 24 5/8–25 7 7/8–8   XXL 30 INTERCHANGEABLE (XS–XXL)
               
Model(s): RECON        
         
Helmet  
SIZE CM IN HAT SIZE (IN)  
XS 53–54 21 1/4–21 5/8 6 3/4–6 7/8  
S 55–56 21 5/8–22 6 7/8–7  
M 57–58 22 1/2 – 22 3/4 7–7 1/4  
L 59–60 22 3/4–23 1/4 7 1/4–7 3/8  
XL 61–62 23 5/8–24 7 1/2–7 5/8  
XXL 63–64 24 1/2–24 3/4 7 3/4–7 7/8  
XXXL 65–66 25 1/2–26 8 1/8–8 1/4  
         
Model(s): REVOLVER EVO          
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 54–55 21 1/4–21 5/8 6 3/4–6 7/8   XS 35 INTERCHANGEABLE (XS–S)
S 55–56 21 5/8–22 6 7/8–7   S 40 INTERCHANGEABLE (XS–S)
M 57–58 22 1/2–22 3/4 7 1/8–7 1/4   M 45 INTERCHANGEABLE (M–XXL)
L 58–59 22 3/4–23 1/4 7 1/4–7 3/8   L 50 INTERCHANGEABLE (M–XXL)
XL 60–61 23 5/8–24 7 1/2–7 5/8   XL 55 INTERCHANGEABLE (M–XXL)
XXL 62–63 24 1/2–24 3/4 7 3/4–7 7/8   XXL 60 INTERCHANGEABLE (M–XXL)
               
Model(s): RIOT        
         
Helmet  
SIZE CM IN HAT SIZE (IN)  
XS 53–54 20 7/8 – 21 1/4 6 5/8 – 6 3/4  
S 55–56 21 5/8 – 22 6 7/8–7  
M 57–58 22 3/8 – 22 3/4 7 1/8–7 1/4  
L 59–60 23 1/8 – 23 1/2 7 3/8 – 7 1/2  
XL 61–62 23 7/8 – 24 1/4 7 5/8 – 7 3/4  
XXL 63–64 24 5/8 – 25 7 7/8 – 8  
         
Model(s): ROGUE            
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 54–55 21 1/4–21 5/8 6 3/4–6 7/8   XS 35 INTERCHANGEABLE (XS–XXL)
S 55–56 21 5/8–22 6 7/8–7   S 25 INTERCHANGEABLE (XS–XXL)
M 57–58 22 1/2–22 3/4 7 1/8–7 1/4   M 35 INTERCHANGEABLE (XS–XXL)
L 58–59 22 3/4–23 1/4 7 1/4–7 3/8   L 25 INTERCHANGEABLE (XS–XXL)
XL 60–61 23 5/8–24 7 1/2–7 5/8   XL 35 INTERCHANGEABLE (XS–XXL)
XXL 62–63 24 1/2–24 3/4 7 3/4–7 7/8   XXL 25 INTERCHANGEABLE (XS–XXL)
               
Model(s): SRT, SRT MODULAR          
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 53–54 20 7/8–21 1/8 6 5/8–6 3/4   XS 40 INTERCHANGEABLE (XS–XXXL)
S 55–56 21 1/2–21 7/8 6 7/8–7   S 35 INTERCHANGEABLE (XS–XXXL)
M 57–58 22 1/4–22 5/8 7 1/8–7 1/4   M 40 INTERCHANGEABLE (XS–XXXL)
L 59–60 23–23 1/2 7 3/8–7 1/2   L 35 INTERCHANGEABLE (XS–XXXL)
XL 61–62 24–24 1/2 7 5/8–7 3/4   XXL 40 INTERCHANGEABLE (XS–XXXL)
XXL 63–64 24 7/8–25 1/4 7 7/8–8   XXL 35 INTERCHANGEABLE (XS–XXXL)
XXXL 65–66 25 5/8–26 8 1/8–8 1/4   XXXL 25 INTERCHANGEABLE (XS–XXXL)
               
Model(s): SCOUT AIR      
         
Helmet  
SIZE CM IN HAT SIZE (IN)  
XS 53–54 21 1/4–21 5/8 6 3/4–6 7/8  
S 55–56 21 5/8–22 6 7/8– 7  
M 57–58 22 1/2–22 3/4 7 1/8–7 1/4  
L 59–60 22 3/4–23 1/4 7 1/4–7 3/8  
XL 61–62 23 5/8–24 7 1/2–7 5/8  
XXL 63–64 24 1/2–24 3/4 7 3/4–7 7/8  
         
Model(s): STAR DLX MIPS          
               
Helmet   Cheek Pad
SIZE CM IN HAT SIZE (IN)   SIZE MM COMPATIBILITY
XS 53–54 20 7/8– 21 5/8 6 5/8–6 3/4   XS 35 INTERCHANGEABLE (XS–XXL)
S 55–56 21 1/2–21 7/8 6 7/8–7   S 35 INTERCHANGEABLE (XS–XXL)
M 57–58 22 1/4–22 5/8 7 1/8–7 1/4   M 35 INTERCHANGEABLE (XS–XXL)
L 59–60 23–23 1/2 7 3/8–7 1/2   L 35 INTERCHANGEABLE (XS–XXL)
XL 61–62 23 5/8–24 1/4 7 5/8–7 3/4   XL 35 INTERCHANGEABLE (XS–XXL)
XXL 63–64 24 5/8–25 7 7/8–8   XXL 35 INTERCHANGEABLE (XS–XXL)

 

BIKE
               
These size charts and conversions are meant to serve as a guide. We recommend you try on before riding to ensure full comfort and performance.
               
               
Model(s): 4FORTY MIPS, 4FORTY AIR MIPS        
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 3/4–24 3/8 7 1/4–7 3/4        
XL 61–65 24–25 5/8 7 5/8– 8 1/8        
               
Model(s): AVENUE            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal Women’s & S/M 50–57 19 5/8–22 1/2 6 1/4–7 1/8        
Universal Adult & M/L 53-60 20 7/8–23 5/8 6 5/8–7 1/2        
Universal XL 58–63 22 7/8–24 7/8 7 1/4–7 7/8        
               
Model(s): DAILY LED            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal Women’s & S/M 50–57 19 5/8–22 1/2 6 1/4–7 1/8        
Universal Adult & M/L 53-60 20 7/8–23 5/8 6 5/8–7 1/2        
               
Model(s): DRIFTER            
 
              
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 7/8–24 3/8 7 1/4–7 3/4        
               
Model(s): FALCON            
 
              
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 7/8–24 3/8 7 1/4–7 3/4        
XL 61–65 24–25 5/8 7 5/8–8 1/8        
               
Model(s): FALCON XR MIPS, FALCON XRV MIPS, FALCON XR LED MIPS, FALCON XRV LED MIPS
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 7/8–24 3/8 7 1/4–7 3/4        
               
Model(s): FORMULA            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 7/8–24 3/8 7 1/4–7 3/4        
               
Model(s): FULL-10 SPHERICAL          
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
XS/S 51-55 20 1/8–21 5/8 6 3/8–6 7/8        
M 55-57 21 5/8–22 1/2 6 7/8–7 1/8        
L 57-59 22 1/2–23 1/4 7 1/8–7 3/8        
XL/XXL 59-63 23 1/4–24 7/8 7 3/8–7 7/8        
               
Model(s): FULL–9            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
XS/S 51–53 20 1/8–20 7/8 6 3/8–6 5/8        
M 55–57 21 5/8–22 1/2 6 7/8–7 1/8        
L 57–59 22 1/2–23 1/4 7 1/8–7 3/8        
XL/XXL 59–63 23 1/4–24 7/8 7 3/8–7 7/8        
               
Model(s): FULL–9 FUSION          
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
XS 51–53 20–20 7/8 6 3/8–6 5/8        
S 53–55 20 7/8–21 5/8 6 5/8–7        
M 55–57 21 5/8–22 3/8 7–7 1/8        
L 57–59 22 3/8–23 1/4 7 1/8–7 1/2        
XL 59–61 23 1/4–24 7 1/2–7 5/8        
XXL 61–63 24–24 3/4 7 5/8–7 7/8        
               
Model(s): HUB            
 
              
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 7/8–24 3/8 7 1/4–7 3/4        
               
Model(s): JAVELIN            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 51–55 20 1/2– 22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 59–63 22 7/8–24 3/8 7 1/4–7 3/4        
               
Model(s): LIL RIPPER          
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal Toddler 45–52 17 3/4–20 1/2 5 5/8–6 1/2        
Universal Child 48–55 18 7/8–21 5/8 6–6 7/8        
               
Model(s): LOCAL            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 51–55 20 1/8–21 5/8 6 3/8–6 7/8        
M 55–59 21 5/8– 23 1/4 6 7/8–7 3/8        
L 59–61.5 23 1/4–24 1/4 7 3/8–7 3/4        
               
Model(s): NOMAD, NOMAD W, NOMAD JR        
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal Adult 53–60 20 7/8–23 5/8 6 5/8–7 1/2        
Universal Women’s 52–57 20 1/2–22 1/2 6 1/2–7 1/8        
Universal Youth 52–57 20 1/2–22 1/2 6 1/2–7 1/8        
               
Model(s): NOMAD 2 MIPS, NOMAD 2 JR MIPS        
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal S/M 52–57 20 1/2–22 1/2 6 1/2–7 1/8        
Universal M/L 53-60 20 7/8–23 5/8 6 5/8–7 1/2        
Universal Youth 52–57 20 1/2–22 1/2 6 1/2–7 1/8        
               
Model(s): RACKET            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 51–55 20 1/8–21 5/8 6 3/8–6 7/8        
M 55–59 21 5/8– 23 1/4 6 7/8–7 3/8        
L 59–61.5 23 1/4–24 1/4 7 3/8–7 3/4        
               
Model(s): SANCTION          
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
XS 48–51 18 7/8–20 1/8 6–6 3/8        
S 52–54 20 1/2–21 1/4 6 1/2–6 3/4        
M 55–57 21 5/8–22 1/2 6 7/8–7 1/8        
L 58–60 23 1/4–23 5/8 7 3/8–7 1/2        
               
Model(s): SIDETRACK          
 
              
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal Child 47–54 18 1/2–21 1/4 5 7/8–6 3/4        
Universal Youth 50–57 19 5/8–22 1/2 6 1/4–7 1/8        
               
Model(s): SIDETRACK II          
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal Toddler 45–52 17 3/4–20 1/2 5 5/8–6 1/2        
Universal Child 47–54 18 1/2–21 1/4 5 7/8–6 3/4        
Universal Youth 50–57 19 5/8–22 1/2 6 1/4–7 1/8        
               
Model(s): SIXER            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 3/4–24 3/8 7 1/4–7 3/4        
XL 61–65 24–25 5/8 7 5/8– 8 1/8        
               
Model(s): SPAN            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
XS 49–53 19 1/4–20 7/8 6 1/8–6 5/8        
S 51–55 20 1/8–21 5/8 6 3/8–6 7/8        
               
Model(s): SPARK, SPARK W, SPARK JR        
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal Adult 53–60 20 7/8–23 5/8 6 5/8–7 1/2        
Universal XL 58–63 (Select Colors) 22 7/8–24 7/8 7 1/4–7 7/8        
Universal Women’s 50–57 19 5/8–22 1/2 6 1/4–7 1/8        
Universal Youth 52–57 20 1/2–22 1/2 6 1/2–7 1/8        
               
Model(s): SPARK 2 MIPS          
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal S/M 52–57 20 1/2–22 1/2 6 1/2–7 1/8        
Universal M/L 53–60 20 7/8–23 5/8 6 5/8–7 1/2        
               
Model(s): STRATUS            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 7/8–24 3/8 7 1/4–7 3/4        
               
Model(s): SUPER 3R            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 3/4–24 3/8 7 1/4–7 3/4        
               
Model(s): SUPER AIR, SUPER AIR–R        
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 3/4–24 3/8 7 1/4–7 3/4        
               
Model(s): SUPER DH            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 3/4–24 3/8 7 1/4–7 3/4        
               
Model(s): TRACE            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal Women’s & S/M 50–57 19 5/8–22 1/2 6 1/4–7 1/8        
Universal Adult & M/L 53-60 20 7/8–23 5/8 6 5/8–7 1/2        
Universal XL 58–63 22 7/8–24 7/8 7 1/4–7 7/8        
               
Model(s): TRANSFER          
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
XS 51–53 20–20 7/8 6 3/8– 6 5/8        
S 53–55 20 7/8–21 5/8 6 5/8–7        
M 55–57 21 5/8–22 3/8 7–7 1/8        
L 57–59 22 3/8–23 1/4 7 1/8–7 1/2        
XL 59–61 23 1/4–24 7 1/2–7 5/8        
XXL 61–63 24–24 3/4 7 5/8–7 7/8        
               
Model(s): TRAVERSE            
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
Universal Adult 54–61 20 1/4–24 6 3/4–7 5/8        
Universal XL 58–63 22 7/8–24 7/8 7 1/4–7 7/8        
               
Model(s): XR SPHERICAL          
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 7/8–24 3/8 7 1/4–7 3/4        
               
Model(s): Z20, Z20 AERO          
               
Helmet              
SIZE CM IN HAT SIZE (IN)        
S 52–56 20 1/2–22 6 1/2–7        
M 55–59 21 5/8–23 1/4 6 7/8–7 3/8        
L 58–62 22 7/8–24 3/8 7 1/4–7 3/4