Details

Made in the US from 6061-T6 aluminum alloy, Box Two Chainrings are round and true. They fit 104 BCD four-bolt cranks and are available in black anodized with laser-etched graphics from 38 to 45-teeth.

Part Numbers

Option	UPC	MPN	Store SKU
Black / 39T	639266089841	BX-CR144B39T-BK	BOX44914066K
Black / 41T	639266089865	BX-CR144B41T-BK	BOX4469694K
Black / 43T	639266089889	BX-CR144B43T-BK	BOX44880106K
Black / 45T	639266089902	BX-CR144B45T-BK	BOX18583849K