Hope Bottom Bracket Conversion Kit Converting Over Do you have a Hope bottom bracket and a SRAM crank that won't work together? The Hope Bottom Bracket Conversion Kits allow the use of SRAM crank spindles with various Hope 30mm bottom brackets. There are different kits that will work with different bottom bracket combinations. Features Kit 1: allows the use of SRAM DUB crank spindles with Hope 30mm BSA, PF46, and T47-68/73 bottom brackets Kit 2: allows the use of SRAM DUB crank spindles with Hope 30mm PF41 bottom brackets Kit 3: allows the use of SRAM DUB crank spindles with Hope 30mm HB bottom brackets Kit 4: allows the use of SRAM DUB crank spindles with Hope 30mm PF42, 386, and T47-86/92 bottom brackets | Hope Technology | Bottom Bracket Conversion Kit Kit 4 - Dub 29Mm To Pf42 /386 / T47-86/92