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509 Altitude Pro Series Liner

$19.95

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Description

509 Altitude Pro Series Helmet Liner

Replacement liner for 509 Altitude and Altitude Carbon Helmets.

Sizing:

  • SM liner provides a tighter fit in size MD helmet
  • MD liner provides a looser fit in size SM helmet
  • XL liner provides a tighter fit in size 2XL helmet
  • 2XL liner provides a looser fit in size XL helmet.

 

 

509 Helmet Sizing

CONVERT TO INCHES

SIZE HEAD (CM)
XS 53-54
SM 55-56
MD 57-58
LG 59-60
XL 61-62
2XL 63-64
3XL 64-65
4XL 66-67

 

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.


How to Measure

  • HEAD
    Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.

Additional information

Size

XS, SM, MD, LG, XL, 2XL, 3XL, 4XL

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