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Bell Size Chart

Proper helmet fit is vital to the performance of a helmet during an impact. For the helmet to perform properly during an impact, it must stay securely on the head.

Measuring the head is only a starting point for the entire sizing procedure. Due to varying shapes, heads that are apparently the same size when measured by a tape may not necessarily fit the same size helmet.

A small metal tape measure or a cloth tape may be used to make your initial measurement. You can also use a string, which can then be laid against a measuring tape.

Measure the circumference of the head at a point approximately one inch above the eyebrows in front, and at a point in the back of the head that results in the largest possible measurement. Take several measurements. The largest measurement is the one you want to use.


Table title

CMR Helmets - Child
Approximate SizeSize in CM
XXS - XS55
S - M58
M58 - 59
XL61 - 61+

Bell RS7-K Adult Kart Helmet

From £345.00 Excl. VAT

  • Identical design as HP7 with lightweight composite shell
  • Optical grade injected Double Screen Anti Fog (DSAF) visor for perfect vision under most severe circumstances
  • Powerful top and chin bar ventilations thanks to a total of no less than 14 air intakes and extraction channels.
  • Optimized shell & shield design resulting in improved aerodynamic behaviour and energy absorbing capacities
  • Air intake 2 parts, top spoiler, side air intakes, side air extractors and chin bar gurney available separately
  • Non-fireproof lining for extra durability
  • Snell K2015 approved
  • Sizes: S(57), M(58-59), L(60), XL(61-62)
Bell RS7-K Adult Kart Helmet
Size Guide