Park Tool BBT-69.4 bottom bracket and Centerlock tool, 16 notches

With the Park Tool BBT-69.4, you tighten and loosen bottom bracket cups with 16 notches. The same tool fits external-spline Centerlock lockrings, as found on thru-axle hubs. It's machined from solid, sits snugly on the notches and doesn't slip.

• For external bearing bottom brackets with 16 notches, e.g. Shimano Hollowtech II (BB51, BB70, BB80, BB5700), SRAM/Truvativ GXP, FSA MegaExo, Race Face X-Type, Hope, Chris King and Campagnolo
• For external-spline Centerlock lockrings (brake discs, e.g. on hubs with 15 or 20 mm thru-axles)
• Not for cassette lockrings or internal-spline Centerlock lockrings – you need a cassette tool for those
• Inner diameter 42.7 mm, 44–45 mm across the notches
• 3/8-inch square drive for a ratchet or torque wrench, not for impact drivers
• CNC-machined aluminium, anodised blue
• Threaded for the Park Tool BBT-RS retaining system (not included)

Tip

Always tighten bottom bracket cups and lockrings to the torque specified by the manufacturer. The 3/8-inch drive lets you fit your torque wrench directly.

You'll find more tools from Park Tool on the Park Tool brand page. Need help choosing? Get in touch and tell us the model of your bottom bracket or hub.