Interloc Racing Design QB55 Cartridge Bottom Brackets – High-Quality JIS Square Taper, Sealed Bearings, Steel Cups, Various Spindle Sizes for Road & MTB Spindle Length:103mm Designed with a classic ringer

Designed with a classic ringer style and a compact 53mm size

The lace closure system provides customizable fit and retention

this faceplate offers a direct replacement that restores your stem's clamping hardware without the need for complete stem replacement

Designed with Vittoria's proven TNT (Tube No-Tube) bead technology and approved for use with hookless rims

Interloc Racing Design QB55 Cartridge Bottom Brackets – High-Quality JIS Square Taper, Sealed Bearings, Steel Cups, Various Spindle Sizes for Road & MTB Spindle Length:103mm Designed with a classic ringerUpgrade your bicycle with the Interloc Racing Design QB55 Cartridge Bottom Bracket collectiondesigned for premium performance, durability, and precise engineering. Crafted in Japan, these high quality sealed cartridge bearings feature rugged steel cups and a traditional square JIS 2 degree taper interface, ensuring a secure, reliable fit for your crankset. Available in a variety of spindle lengths (68mm, 103mm, 107mm, 110mm, 113mm, 115mm, 118mm,