Chris King and other cassette lockrings

100 mm (standard) or 110 mm (Boost)

Fluid resistance trainers provide a more ‘road-like' feel than magnetic trainers and this feel is increased by a higher weight flywheel

and tailbone protection without the bulk of body armour

Spindle size (diameter): 24mm only

Bell 4FORTY MIPS Helmet - M - Matte - Gloss Black - AS-NZS 2063-2008 Standard Images Uploaded - Ready for Review Chris King and other cassetteAs the more affordable sibling to the Sixer, the Bell 4FORTY MIPS Helmet still packs in a heap of features you'd expect to find on a much more expensive helmet and manages to look good while doing it. Featuring a MIPS liner and extended rear coverage for safety, an adjustable visor designed to accommodate goggles, 15 vents to keep your head cool, and Bell's new Sweat Guide padding to keep the sweat out of your eyes and off your sunnies, the 4FORTY is