BB86 Press-Fit (Road) Bottom Bracket Compatibility

Also known as: BB86, Press Fit 86, PF41 road, 86.5

BB86 (Shimano Press Fit road) presses cups into a 41mm bore that is 86.5mm wide. The narrower 41mm bore is built around a 24mm Shimano Hollowtech II spindle, so BB86 is the natural press-fit home for Shimano road cranks.

Because the cup carries the bearing (not the bare frame), BB86 is generally better-behaved than BB30-style press-fit. Reducer BBs let it also take SRAM GXP/DUB, 30mm and Campagnolo spindles.

BB86 at a glance

Fitment
press-fit
Shell
41mm bore, 86.5mm wide, press-fit cups
Shell width
86.5mm
Native crank
24mm (Shimano Hollowtech II)

BB86 bottom brackets by crank fitment

A BB86frame accepts different cranks depending on the bottom bracket you choose. Pick the group that matches your crankset's spindle.

For Campagnolo Ultra-Torque (25mm) cranks (4)

Fits: Campagnolo Ultra-Torque cranksets (two-piece, split 25mm axle).

For Campagnolo Power-Torque (25mm) cranks (1)

Fits: Campagnolo Power-Torque cranksets (one-piece 25mm axle).

For FSA MegaExo (19mm) cranks (1)

Fits: FSA MegaExo 19mm-spindle road cranksets.

Frames with a BB86 bottom bracket

34 frames in our catalogue use the BB86 standard.

Cranksets that fit a BB86 frame

These cranksets match a spindle standard a BB86 bottom bracket supports.

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Frequently Asked Questions

Is a BB86 bottom bracket threaded or press-fit?

BB86 is a press-fit standard: the bearing cups press into the frame bore (41mm bore, 86.5mm wide, press-fit cups). Press-fit saves weight and allows a larger spindle, but demands tight frame tolerances and can be more prone to creaking than a threaded shell.

What shell width does a BB86 frame use?

BB86 frames use a 86.5mm shell (41mm bore, 86.5mm wide, press-fit cups). Always match your bottom bracket to both the standard and your frame's exact shell width before buying.

Which cranks fit a BB86 frame?

With the right bottom bracket, a BB86 frame can run cranks on several spindle standards. In our catalogue we have BB86 bottom brackets for: 24mm (Shimano Hollowtech II); SRAM GXP (24/22mm); 30mm (BB30 / PF30 / 386EVO); Campagnolo Ultra-Torque (25mm); SRAM DUB (28.99mm); Campagnolo Power-Torque (25mm); FSA MegaExo (19mm). Pick the bottom bracket that matches your crank's spindle — most commonly 24mm (Shimano Hollowtech II).

How many BB86 bottom brackets and frames are listed?

We currently track 34 BB86 bottom brackets and 34 frames built to the BB86 standard, checked against our compatibility engine.

My BB86 bottom bracket creaks — what can I do?

Press-fit creak usually comes from insufficient preload or a bore that is fractionally out of tolerance. Options include a thread-together (compression) bottom bracket that clamps across the shell, careful greasing/retaining compound on the cups, or — on frames with a ~46mm bore — converting to a threaded T47 bottom bracket for a permanent fix.

Other bottom bracket standards

BSAT47ItalianPF30BB92BB386EVOBBright

Compare standards

Not sure it fits?

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34 BB86 bottom brackets checked by our compatibility engine.