The Switch system is a spider/ring combo (rings sold separately) that replaces your standard direct mount ring

Neither have we

and dusty conditions

• Silicone grip patterning on fingers for improved riding control

so it's not going to harm your bars

Shimano XTR FC-M9120-1 1x12 Speed Crank Arms - 24mm - Shimano Direct Mount - No Spider - No Chainring - 52mm Chainline - Grey - 170mm - 68-73mm Exclusive The Switch system is aThe all new XTR 1x12 Speed Crank Arms are everything you have come to expect from Shimano. Superior quality paired with unmatched engineering all manufactured from top quality materials. Who's this item for: XC and Trail riders who want the absolute best cranks Shimano offers. Spindle Size: 24mm Weight: Approx 548g with a 32T direct mount chainring (depending on crank arm length) Chainring: These cranks will accept Shimano direct mount chainrings