Tripeak Headset Sealed AC Bearing (51.8x40x8) - 36/45 Deg Gear Shifters but decreases rotating mass to

but decreases rotating mass to aid in acceleration

They are held into place with the help of friction rubber on the nose pad and the inside of the temples

It’ll guarantee no more stuck threads or rusty bearings

It removes dust and oil off the chain by turning the crank several times

D413 Description:

Tripeak Headset Sealed AC Bearing (51.8x40x8) - 36/45 Deg Gear Shifters but decreases rotating mass toProduct Description Tripeak Headset Sealed AC Bearing (51. 8x40x8) (36 45 Deg) Specifications: Bearing specification: Outside diameter: 51. 8mm Inside diameter: 40mm Height: 8mm degrees? 36 45 Sealed AC Bearing Itemcode: EMA 518400 H80A36 Made in Taiwan Sizing Information Size 51. 8x40x8mm