Radio MTB Zilla Mid/Bsa Bb Set

The Zilla Bottom Bracket Set brings BMX versatility to your MTB. This outboard BSA/Euro bottom bracket accommodates both 19mm and 22mm BMX-style crank spindles, letting you run BMX cranks on standard threaded bottom bracket shells (68mm and 73mm). Built from 6061-T6 alloy cups, cones, and spacer with stainless sealed bearings, it delivers durability and smooth rotation. The 6904-12VV (19mm) and 6904-22VV (22mm) oversize bearings handle the demands of BMX geometry on mountain bikes. Includes crank arm spacers and tube spacers for both 68mm and 73mm shells, so you have everything needed for a complete swap. Perfect for riders looking to experiment with different crank setups or build a hybrid ride that blends BMX and MTB styles.