Enduro HDK-0010 Maxhit Zero-Stack Headset Kit- ZS44/28.6 Upper | ZS56/40 Lower Angular Contact Bearings Tapered BLK MFPN=301-39632-A002 Measure trainer at the widest

Measure trainer at the widest setting and measure the bike frame width at the rear hub

size S/M color black

Includes 2 - 61804 steel bearings

}microSHIFT R10 Front Derailleur - 10-Speed Double 56t Max Braze-On Shimano Compatible Black

Enduro HDK-0010 Maxhit Zero-Stack Headset Kit- ZS44/28.6 Upper | ZS56/40 Lower Angular Contact Bearings Tapered BLK MFPN=301-39632-A002 Measure trainer at the widest1 1 8 x 1 1 2" stainless steel, Angular Contact, Zero Stack Headset Bearing Kit for 44mm 56mm ID head tube framesets MAXhit headset beaings are designed to press directly into your bicycles headtube, eliminating the need for aluminum cups that are traditionally used to carry the bearings. This unique design frees up space for much larger balls that more than double the load capacity compared to standard headset bearings. The kit includes fork crown