HSC BB386 EVO Ceramic Adapter Bottom Bracket

Article number: 014-06-07
Availability: Out of stock

BB386 is most simply thought of as a 86.5mm wide PF30 bottom bracket shell. The BB386's width places the bearings further apart than both BB30 and PF30. It's designed to match the bearing width of English external bottom brackets. The HSC BB386 bottom bracket features a CNC machined high density delrin shell protecting your frame while pressing your bearings and preventing any creaking. The bearings are HSC's exceptionally durable and fast Si3N4 ceramic bearings with steel races. With the quality of the bottom bracket and its price it makes a high quality replacement or component upgrade saving both weight and lowering resistance over most stock bottom brackets.


These adapters are designed to fit frames with 86.5mm wide bottom bracket shells. The option you require will depend on the crankset being used:

Shimano HTII - Adapts a BB386 EVO frame to fit 24 mm spindle cranksets

SRAM GXP - Adapts a BB386 EVO frame to fit a stepped 24 / 22 mm spindle crankset

SRAM DUB - Adapts a BB386 to fit SRAM's proprietary DUB design, 29 mm spindle crank


Shell Internal Diameter Shell Width
46 mm 86 mm
Crank Compatibility Shimano HTII SRAM GXP SRAM DUB-R
Crank Spindle 24 / 24 mm 24 / 22 mm 29 / 29 mm
Weight ~105g ~108g ~104g
Material Delrin Thermoplastic
Bearings (2) - 6805 w7 - Si3N4 ceramic hybrid
Tools / Installation Quality bearing press / DUB tool included with purchase



To avoid frame damage, we recommend that these BB386 bottom bracket adapters be professionally installed using a proper bearing press.

Please feel free to contact us directly for technical questions.

0 stars based on 0 reviews