KACTUS Ceramic Bottom Bracket — BSA Thread Kit

⭐ Club Checked
G3 silicon nitride ceramic bearings spin smoother and with less resistance than steel, all in a CNC-machined shell precision-fit for 68-73mm BSA frames. Pick the BSA24, BSA30 or BSA-DUB axle option to match a Shimano, SRAM GXP or DUB crankset and feel the difference on every pedal stroke.

Ceramic Smoothness, Precision Fit

G3 silicon nitride ceramic bearings · CNC precision machined · Fits BSA 68-73mm shells · Compatible with Shimano, SRAM GXP and DUB cranksets

⚙️ Ceramic Bearings

G3 silicon nitride ceramic beads with a sealing ring — harder and smoother than steel, with less friction and less rolling resistance through every pedal stroke.

🔩 CNC Precision Machining

Heat-treated and CNC machined for a tight, accurate fit that keeps things strong without piling on weight.

🔧 Wide Crankset Compatibility

Available in three axle fits — BSA24 (24/22mm, for Shimano and SRAM GXP cranksets), BSA30 (30mm, for SRAM Rival/Force/Red and Rotor 3D cranksets) and BSA-DUB (28.99mm, for SRAM DUB) — all in a 68-73mm BSA shell.

🛡️ Sealed Against the Elements

Built-in rubber sealing ring keeps dust and grit out of the bearings for a longer service life.

Specifications

Pick the axle size that matches your crankset and enjoy the smoother spin.