Optimised for Shimano 10/11 speed derailleurs and shifters but will work with 9 speed and SRAM and Campagnolo groups

Bearings are precision custom 6805 16 ball bearings filled with Phil Wood Grease and utilising a triple wiper seal to keep the dirt out and grease in

Prevents the formation of foam and inhibits corrosion

improves shifting and decreases drivetrain noise

It has large collars to fit pretty much any bike around without marking your frame

Wolf Tooth 4 Bolt Alloy Drop-Stop Chainring - 110 BCD - Asymmetrical Shimano - Round - Black - 40T PDP|PLP|Brake Rotor Type Optimised for Shimano 10/11 speedIf you are in need of a 4 Bolt Chainring, chances are Wolf Tooth have an option to suit. Made from a high grade 7075 T6 aluminium Wolf Tooth's Drop Stop Chainrings are one of the best performing and longest lasting wide narrow chainring options on the market. Chain Retention Technology: Drop Stop technology is Wolf Tooths patented wide narrow chainring design. The wide side of the tooth has maximum contact on the drive side which spreads the load and