SPA CYCLES TD-2 Spa Narrow/Wide Single Chainset. Used but in excellent condition. 40t ring fitted. 38t spare included in sale 170mm cranks From vendors website: Compact single chainset which offers a combination of affordability and durability. The alternating narrow-wide profiles of the chainring teeth provide increased chain security when used with a 1x derailleur transmission. Suitable for use with 9-12spd chains. Our Narrow-Wide Chainrings are CNC machined 7075 T6 Zicral aluminium alloy in a matt black finish, with laser engraving to complement the cranks. Recommended bottom bracket: First Components DX-30 110mm
