Designed to optimise performance in fixed gear criteriums. The tooth is smooth and curved on all sides, with wide arcs that fit the chain exactly, ensuring perfectly tuned acceleration and deceleration. Smooth, Stiff, Responsive. The Drillium is precision double machined.

Custom Engraving available: bespokechainrings.com/shop/engraving

Specs:

• 47–50T - 144 BCD

• 1/2" x 1/8"  (Track, Single Speed Chain)

• Copper Plated

• 7075 T73 Alloy