Acoeitl Bike Low Spacer Washer Bottom Bracket Gasket BB for Flywheel Speed Cassette MTB Road Hub 8 9 10 Various Size 1.85mm 1Pcs Headset Flywheel Cycling Bracket Axle

Acoeitl Bike Low Spacer Washer Bottom Bracket Gasket BB for Flywheel Speed Cassette MTB Road Hub 8 9 10 Various Size 1.85mm 1Pcs Headset Flywheel Cycling Bracket Axle

• Help prevent shaking from uneven surface.Use this washer as a BB spacer and to fix the chain line on a fixed gear bike.
• The shims help the chain not rubbing on the tire.Allows you to maintain a correct chain-line.This is perfect to add just a tap bit of spacing to your mid-drive motor.
• Great at replacing spacers between cogs.Perfect alignment,no deraileur adjustment needed to switch wheels to a wheel with a 9 speed cassette on a 9 speed hub.
• Let your crank arms rock side to side easily,and it only takes 10 minutes to remove the crank and cup,put on the spacer and rebuild.
• Shifts smooth,no play,and doesn't catch on the back stroke.You could swap wheel sets without adjusting the rear derailleur.