HyperBB From 42g

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Highest performing and lightest bottom bracket kit on earth, available for 29mm or 30mm axles. Featuring most performing bearings ever: smooth and at the lowest friction, super-durable and never-rustable. Weight includes the complete assembly of left and right sides (2 bearings + 2 cups + access.) Available for the following BB versions: BB91-41B (fits PressFit shell width 86.5mm / bore 41mm) 42g BB91-42 (fits PressFit shell width 84.5mm / bore 42mm) 44g BSA 68 (fits standard BSA threaded shell, width 68mm) 66g BB30 (fits BB30 shell, width 68mm / bore 42mm) 65g PF30 (fits PressFit 30-68 BB-shell, width 68mm / bore 46mm) 66g ITA 70mm (fits standard "Italian" threaded shell, width 70mm) +68g (standard bearings) BB386 evo (fits BB386 evo shell width 86.5 / bore 46mm) 59g BB Right 42 (fits BB Right width 79-offset / bore 42mm) 44g BB Right 46 (fits BB Right width 79-offset / bore 46mm) 62g T47-e External (fits standard M47x1 threaded shell, width 68mm) 73g T47-i Internal (fits standard M47x1 threaded shell, width 86mm) 68g All BB on 29mm / DUB versions include Delrin adapters (adding +3g)

…More Tech Details

Axle Diameter BB version Bearings

173,04 €

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Description
Bottom Brackets
Manuals
Spare Parts

Tech info

Bottom Brackets

Model	Compatibility	Specs	Weight
BSA 68/73		SM-BB6700 Shell type: Threaded (1.37 X 24 T.P.I.), width 68mm or 73mm Installed width (at bearing outer faces): 85.2mm or 90.2mm	66g
BB91-41B		Shell type: Press-Fit bore Ø41mm, width 86.5mm Installed width (at bearing outer faces): 86.5mm	42g
BB91-42		Shell type: Press-Fit bore Ø42mm, width 84.5mm Installed width w/o spacers (at bearing outer faces): 82.5mm Installed width with spacers (at bearing outer faces): 85.7mm	44g
BB30		Shell type: Press-Fit bore Ø42mm, width 68mm or 73mm Installed width (at bearing outer faces): 85.2mm or 90.2mm	65g
PF30		Shell type: Press-Fit bore Ø46mm, width 68mm or 73mm Installed width (at bearing outer faces): 85.2mm or 90.2mm	66g
ITA-70mm		Standard "Italian" BB shell Shell type: Threaded (37x1mm), width 70mm Installed width (at bearing outer faces): 87.2mm	68g
BB386 Evo		Shell type: Press-Fit bore Ø42mm, 86.5mm Installed width (at bearing outer faces): 85.5mm	59g
BB Right 42		Shell type: Press-Fit bore Ø42mm, 79mm Installed width (at bearing outer faces): 85.7mm	44g
BB Right 46		Shell type: Press-Fit bore Ø46mm, width 68mm or 73mm Installed width (at bearing outer faces): 85.7mm	62g
T47-e		T47 External Shell type: Threaded (1M47x1mm), width 68mm or 73mm Installed width (at bearing outer faces): 85.2mm or 90.2mm	73g
T47-i		T47 Internal Shell type: Threaded (1M47x1mm), width 86.5mm Installed width (at bearing outer faces): 86.3mm	68g

Important Tech notes
1) The installed width depends from the real BB shell width of your frame unit, overpainting or machining may slighly increase or decrease the width.
This may be compensate by crankset bearing preload device (if there) or by adding/removing axle shims.

2) The correct final assembly should leave the bearings at zero preload with zero axial play too in order to reduce friction and increase bearing life.
For the reasons above never tighten the crank levers before checking that your tightening will squeeze and damage the BB bearings.

3) In case of Pres-Fit shells make always well sure the BB shell bore is well correct on tolerance, generally 0.02mm below its nominal size.
Never press-in a new bearing into a too tight shell, that will cause bad friction and sensibly shorten the bearing life.

4) Remind that good bike shops have reaming tools to face the BB shell width and also to ream shell bore or threads.