Troy Lee Designs D4 Carbon MIPS BMX Race Helmet-Reverb Black/White Helmet Size:Adult X-Large Both 3/8″ and 14mm specific

Both 3/8″ and 14mm specific versions

it is super stiff

Bossless available

FORK: 1 1/8" threadless full chromoly fork w/internally threaded steerer tube & tapered legs

Troy Lee Designs D4 Carbon MIPS BMX Race Helmet-Reverb Black/White Helmet Size:Adult X-Large Both 3/8″ and 14mm specificThe Troy Lee Designs D4 Carbon MIPS BMX Race Helmet uses advanced tech to provide superior protection and comfort and tops it off with style. TLD has engineered this helmet with increased strength and added durability with very little weight gain. Featuring an integrated MIPS Brain Protection System to reduce rotational forces on the brain caused by impact. Instead of steel, the D rings are titanium to get just that little extra bit of weight saving.