BESNIN Bike Chainring 104 BCD 30T 32T 34T 36T 38T 40T 42T 44T 46T 48T 50T 52T Round Narrow Wide Single Chain Ring for 7 8 9 10 11 12 Speed MTB BMX Road (Black, Round)

SUPPORTS 104MM BCD: This series of chainrings has a BCD of 104 mm and is suitable for front cranksets with 4 bolts and a BCD of 104 mm. 4 chainring bolts included. (Note: 30T chainrings are threaded and only require male bolts, not nuts.) 7075 ALUMINIUM AND CNC MACHINED: Made from 7075 aluminium alloy and CNC machined to ensure precision, lightness and durability for your bicycle chainrings. Weight: 147g. Colour: Red SUPPORT 7 TO 12 SPEED SYSTEM: Using BESNIN chainrings can make your bike lighter and easier to use. It has high compatibility and supports 7/8/9/10/11/12 speed rear flywheel WIDE NARROW TOOTH DESIGN: The teeth of this round chainring adopt the second generation wide narrow tooth design, which maximises the service life of the chainring and reduces friction and noise. The larger wide-tooth design improves the anti-dropout performance of the chainring PERFECT as a replacement for an old chainring or to convert a 2- or 3-speed chainring to a single front chainring. Please check the correct crank BCD specification for your bike before purchasing