Crank Spindle Spacers & Seals
Crank Spindle Spacers & Seals
Wheels Mfg bottom brackets are OE replacements to be used across a wide variety of crankset/frame configurations. Exact spacer configuration is not available at this time. You may need to install and remove the crankset a few times during installation to get your spacing correct. Always refer to your crank manufacturer’s installation notes first, and adjust spacers from there. We recommend performing your initial installation without any spindle spacers on the crank to determine how many spacers to add, and where to add them. Bottom bracket installation and service by a professional or certified mechanic is recommended.
All Wheels Mfg bottom brackets come with dust seals and a small selection of crank spindle spacers. Dust seals always fit directly against the bearings. Please reference this page for seal orientation.
GXP Compatible Crank Spindles (22/24mm)
SRAM GXP spindles are unique in that the spindle diameter steps from 24mm to 22mm on the end of the crank spindle. The non-drive side (NDS) bearing has a 22mm ID. When the crank is installed into the bottom bracket, the splined end of the spindle will protrude beyond the bearing about 15mm. Before the left crank arm is installed, the GXP dust seal must be placed up against the bearing. Do not add any additional spindle spacers and/or wave washer between the NDS bearing/dust seal and the left crank arm!
Spindle spacers and/or wave washer will always be positioned between the drive side seal and the crank arm. In most installs, there will be a gap between the right crank arm and the drive side seal. This gap on the crank must be filled completely with spindle spacers and/or a wave washer. If adding the wave washer, it should be almost flat once the left crank arm is attached.
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Non-Drive Side - 22mm ID dust seal. Side with lettering in the black silicone will face the bearing. |
Drive Side - 24mm ID dust seal. Add spacers and/or wave washer as needed to fill up free space on spindle when left crank arm is attached. |
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Single Diameter Crank Spindles (30mm, 29mm and 24.00mm)
For all cranksets with a constant diameter spindle (30mm, 29mm DUB and 24mm), spindle spacers are used as needed to remove any side-to-side play of the crank, and to center the crank in the frame.
- For most installations, the included spacers will be enough to properly position the cranks in the BB. Some installations may need additional spindle spacers, which can be purchased separately. Not every BB/crankset combination will need spacers.
- A few cranksets may include stock spacers and/or an adjuster that are too wide when used with Wheels Mfg bottom brackets. If these spacers and/or adjuster cause the bearings to bind, you will need to replace them with a selection of thinner spindle spacers.
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| Add spindle spacers if needed to remove side-to-side movement of the crankset thru the bottom bracket. |
Crank Spindle Spacers & Seals
Wheels Mfg bottom brackets are OE replacements to be used across a wide variety of crankset/frame configurations. Exact spacer configuration is not available at this time. You may need to install and remove the crankset a few times during installation to get your spacing correct. Always refer to your crank manufacturer’s installation notes first, and adjust spacers from there. We recommend performing your initial installation without any spindle spacers on the crank to determine how many spacers to add, and where to add them. Bottom bracket installation and service by a professional or certified mechanic is recommended.
All Wheels Mfg bottom brackets come with dust seals and a small selection of crank spindle spacers. Dust seals always fit directly against the bearings. Please reference this page for seal orientation.
GXP Compatible Crank Spindles (22/24mm)
SRAM GXP spindles are unique in that the spindle diameter steps from 24mm to 22mm on the end of the crank spindle. The non-drive side (NDS) bearing has a 22mm ID. When the crank is installed into the bottom bracket, the splined end of the spindle will protrude beyond the bearing about 15mm. Before the left crank arm is installed, the GXP dust seal must be placed up against the bearing. Do not add any additional spindle spacers and/or wave washer between the NDS bearing/dust seal and the left crank arm!
Spindle spacers and/or wave washer will always be positioned between the drive side seal and the crank arm. In most installs, there will be a gap between the right crank arm and the drive side seal. This gap on the crank must be filled completely with spindle spacers and/or a wave washer. If adding the wave washer, it should be almost flat once the left crank arm is attached.
Non-Drive Side - 22mm ID dust seal.
Side with lettering in the black silicone will face the bearing.
Drive Side - 24mm ID dust seal.
Add spacers and/or wave washer as needed to fill up free space on spindle when left crank arm is attached.
Single Diameter Crank Spindles (30mm, 29mm and 24.00mm)
For all cranksets with a constant diameter spindle (30mm, 29mm DUB and 24mm), spindle spacers are used as needed to remove any side-to-side play of the crank, and to center the crank in the frame.
- For most installations, the included spacers will be enough to properly position the cranks in the BB. Some installations may need additional spindle spacers, which can be purchased separately. Not every BB/crankset combination will need spacers.
- A few cranksets may include stock spacers and/or an adjuster that are too wide when used with Wheels Mfg bottom brackets. If these spacers and/or adjuster cause the bearings to bind, you will need to replace them with a selection of thinner spindle spacers.
Add spindle spacers if needed to remove side-to-side movement of the crankset thru the bottom bracket.