Is Delrin durable enough for a bottom bracket cup?

Yes — Delrin is an engineering-grade acetal polymer used in industrial applications requiring dimensional stability and wear resistance. It outlasts softer plastics and maintains its fit over thousands of kilometres.

What cranksets are compatible with this BB?

The BK-6009 is designed for Shimano Hollowtech II and compatible 24mm spindle cranksets. This includes Shimano 105, Ultegra, Dura-Ace, and many third-party cranks with 24mm spindles. SRAM and other brands with non-24mm spindles require different BBs.

Can I convert my PF30 frame to threaded with this?

No — the BK-6009 is a standard press-in replacement. For a threaded BSA conversion, you need a PF30-to-BSA threaded adapter shell, which is a more permanent modification.

Enduro Bearings

Enduro Bearing BK-6009 - ABEC-3, Press-In, Delrin-Cup Bottom Bracket for PF30 framesets and Shimano (24mm) Cranksets

Name: Enduro Bearing BK-6009 - ABEC-3, Press-In, Delrin-Cup Bottom Bracket for PF30 framesets and Shimano (24mm) Cranksets
Brand: Enduro Bearings
SKU: BK-6009
Price: 5499.00 INR
Availability: InStock
Author: InstaSport Editorial

₹5499.00

Description

ABEC-3, Press-In, Delrin-Cup Bottom Bracket for PF30 framesets and Shimano (24mm) Cranksets Enduro's entry level BB solution, though many steps up when compared to other products on the market, we couple our ABEC-3 radial bearings with precision machined Delrin cups that simply press directly into t