Wheels Manufacturing PF30 Outboard Thread Together Bottom Bracket with ABEC-3 Bearings for 29 mm Crank Spindles

Designed for 29 mm diameter SRAM DUB crank spindles, this Wheels Manufacturer PF30 Outboard Thread Together bottom bracket has been upgraded to increase durability and bearing longevity.Compatible with PF30 and Specialized Carbon OSBB bottom bracket/frame interfaces and 29 mm diameter SRAM DUB crank spindlesSpecialized Carbon OSBB frames with a 61 mm shell width may need additional cup spacers (not included)Fits frames with 61 to 73 mm shell widths; 46 mm shell internal diameterMachined aluminum cups with replaceable bearings offer increased durability and longer bearing lifeEnduro ABEC-3 sealed, grade 10 chromium-steel ball bearings provide smooth, long-lasting operation52100 high-carbon chromium alloy races are extremely tough and durable for a long life