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Frame compatibility
13-08-2016

Frame compatibility

Nowadays, there is a large selection of frames available on the market, and with it comes a wide range of bottom bracket standards. It’s important to know what frame format you are using to ensure compatibility with your power2max and to choose the right model. Below, we show you how to determine the bottom bracket standard of your frame and give recommendations on which model to choose for which frame type.

 

How to determine the bottom bracket standard of your frame


Using the following three simple steps you can determine the bottom bracket standard of your bike, which will help you choose the right power2max:

1. Does your frame have external bearing cups?
Many frames have external bearing cups that are screwed into the frame, like in the picture below:

If this is the case on your bike, then you have a BSA or ITA threaded frame. If there are no external bearing cups, then the bearings are either pressed into the frame, or you are using a threaded frame with a square taper or Octalink axle.

 

2. How wide is your frame at the bottom bracket? 

If your frame doesn’t have external bearing cups, then you should measure the width of the frame at the bottom bracket, like in the picture above. The most common bottom bracket widths are 68mm (BB30 and PF30), 79mm (Cervlo BBRight), 86mm (BB86 or BB386EVO) and 90mm (BB90 by Trek).

 

3. How large is the diameter of the bottom bracket bore?

The next step is to determine the diameter of the bottom bracket bore, as pictured below:

The diameter of the bottom bracket bore is the last piece of information that you need to determine which type of frame you have. The inner diameter of the bottom bracket bore is 37mm on BB90 frames, 41mm on BB86 frames, 42mm on BB30 frames, and 46mm on BBRight, PF30 and BB386EVO frames.
 

Compatibility with power2max and recommended models


You only need to check compatibility on BB86 and BB386EVO frames, all other frame formats are always compatible with power2max. To check compatibility, please measure the  outer diameter of the bottom bracket bore. It should not exceed 53mm on power2max Classic and 57mm on power2max Type S to ensure compatibility with power2max.

Bottom bracket standard

Compatibility with power2max

Recommended model

BB30

Yes

Rotor 3D+, Rotor 3DF, Specialized S-Works, Cannondale Hollowgram, SRAM S900 / Force22, BOR RR688, Tune Smart Foot, Lightning

BB386 EVO

Check!

Rotor 3D+, Rotor 3DF, BOR RR688, Tune Smart Foot

BB86

Check!

FSA Gossamer, FSA K-Force Light, Rotor 3D

BB90

Yes

FSA Gossamer, FSA K-Force Light, Rotor 3D

BBRight

Yes

Rotor 3D+, Rotor 3DF, BOR RR688, Tune Smart Foot

BSA

Yes

FSA Gossamer, FSA K-Force Light, Rotor 3D, SRAM S900 / Force22

ITA

Yes

FSA Gossamer, FSA K-Force Light, Rotor 3D, SRAM S900 / Force22

PF30

Yes

Rotor 3D+, Rotor 3DF, BOR RR688, Tune Smart Foot, Lightning, Cannondale Hollowgram, SRAM S900 / Force22

 

As a last step, please check that you have the right bottom bracket for the crank of your choice. We wish you a lot of fun with your new power2max!

 

Technical data of the most common bottom bracket standards

1. Road

 

Bottom bracket standard

Bearings inboard / outboard

Frame width at the bottom bracket

Bearing installation

Inner diameter of the bottom bracket bore

Compatibility with power2max

BB30

Inboard

68 mm

Pressed in: bearing directly into the frame

42 mm

Yes

BB386 EVO

Inboard

86 mm

Pressed in: delrin plastic cup into the frame

46 mm

Check!

BB86

Inboard

86 mm

Pressed in: delrin plastic cup into the frame

41 mm

Check!

BB90

Inboard

90 mm

Pressed in: bearing directly into the frame

37 mm

Yes

BBRight

Inboard

79 mm

Pressed in: bearing directly into the frame

42 mm

Yes

BSA

Outboard

68 mm

Screwed in: external bottom bracket cup

33,8 mm

Yes

ITA

Outboard

70 mm

Screwed in: external bottom bracket cup

35 mm

Yes

PF30

Inboard

68 mm

Pressed in: delrin plastic cup into the frame

46 mm

Yes

 

 

 

2. Mountain bike

 

Bottom bracket standard

Bearings inboard / outboard

Frame width at the bottom bracket

Bearing installation

Recommended cranks

Compatibility with power2max

BB30

Inboard

68 mm

Pressed in: bearing directly into the frame

Rotor 3D+
Rotor 3DF
BOR XC666

Yes

BB386 EVO

Inboard

86 mm

Pressed in: delrin plastic cup into the frame

Rotor 3D+
Rotor 3DF
BOR XC666

Check!

BB92

Inboard

92 mm

Pressed in: delrin plastic cup into the frame

Rotor 3D

Check!

BB95

Inboard

95 mm

Pressed in: bearing directly into the frame

Rotor 3D

Yes

BSA

Outboard

73 mm

Screwed in: external bottom bracket cup

Rotor 3D

Yes

ITA

Outboard

70 mm

Screwed in: external bottom bracket cup

Rotor 3D

Yes

PF30

Inboard

68 mm

Pressed in: delrin plastic cup into the frame

Rotor 3D+
Rotor 3DF
BOR XC666

Yes

 


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