- Hadley SDH Rear Conversion Kits & Parts
- SDH Rear 135mm/142mm Main Hub Shell Bearing Spacer
SDH Rear 135mm/142mm Main Hub Shell Bearing Spacer

SDH Rear 135mm/142mm Main Hub Shell Bearing Spacer
Hadley Rear SDH Hub 135mm/142mm Main Hub Shell Bearing Spacer
This is the spacer that goes in between the two main hub shell bearings.
Hadley Part No. H501594
Hadley Rear SDH Hub 135mm/142mm Main Hub Shell Bearing Spacer
This is the spacer that goes in between the two main hub shell bearings.
Hadley Part No. H501594
Hub has a flush mount end cap on the disc brake side
Includes: Internal Flush Mount Axle and End Cap
Clear Anodize Finish
Fits Hadley SDH Hub (135mm Spacing) (converts to 122mm)
Note: Hub will have SDH or H600135 marked above the Hadley logo
Fits Hadley hubs built between 2001 to 2017 (if your hub is 2018 and newer it will use the Shimano/XD 2018 conversion)
See photo of gold and red hub, the gold hub on the left is the 2001 to 2017 where the end cap tapers out to a larger diameter at the base, note the inside diameter of the white plastic retainer is larger where the six pin spanner holes are right next to the inside diameter. The red hub on the right has the 2018 and newer Shimano/XD freehub where the end cap is a straight cylinder and does not flare out to a larger diameter, also note the white plastic retainer has a smaller inside diameter and the six pin spanner holes are farther from the inside diameter. If you have the gold style hub this conversion will fit this hub, if you have the red style hub then you have the 2018 and newer Shimano/XD freehub and need the XD drive conversion sold under the Hadley XD Driver (XX1/X0) Conversion Kits & Parts.
Does not fit SDH XL or H600150 hubs
Special Tools Needed to install
Recommend using Hadley tools to remove existing end caps.
To install use Hadley 18.5mm pin spanner wrench on drive side and
a Hadley 18.5mm pin spanner or an adjustable pin spanner on disc side