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Jackal Helmet - Primer Gray - Smoke - Large
Highly ergonomic design improves streamlining while providing crucial protection for MX and off-road riding
Embossed back panel cuff for comfort and modern look
ultra-stiff strutted forgings
Knee-cup is secured accurately in place by an innovative integrative mechanical guiding system to allow for multi-directional freedom of movement
ATHENA Piston Kit S4F06900001A 100 percent Jackal Helmet - Primer GrayPiston Kit Two stroke pistons are made from 4032 silicium, Four stroke pistons are made from 2618 silicium the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All pistons are forged using a precision heat treatment process that allows for production tolerances of just . 005mm, Forged piston tooling allows for the lightest available product, Kits include antiwear coated piston, rings, pin