Troy Lee Designs D4 Carbon MIPS BMX Race Helmet-Inferno Gray Helmet Size:Adult X-Small Fits wheel sizes 20"-29" and

Fits wheel sizes 20"-29" and is not compatible with plus or fat tire wheels

5"-20mm is a lightweight race Pro fork made from a 4K thread count carbon fiber weave with a 1-pc 7000 series aluminum steerer tube and crown

*Steel press piece that substitutes the drive side jam nut

Available in multiple patterns and colorways

75" HEAD ANGLE: 74° SET TUBE ANGLE: 71° POST SIZE / CLAMP SIZE: 27

Troy Lee Designs D4 Carbon MIPS BMX Race Helmet-Inferno Gray Helmet Size:Adult X-Small Fits wheel sizes 20"-29" andThe Troy Lee Designs D4 Carbon MIPS BMX Race Helmet weighs in at just about 1 kilogram making it one of the lightest helmets in the game. The D4 incorporates the MIPS brain protection system to help prevent rotational stress resulting from angled impacts. Instead of steel, the D rings are titanium to get just that little extra bit of weight saving. The EPP collarbone impact system is a specially designed area to help mitigate helmet collarbone