Information
Our headset crown races are designed with a “split” to allow for tool-free installation and removal. Check out the chart below to see which crown race you need for your headset and fork combination.
Specs
- HSRACE30 fits EC34, ZS44, IS41, or IS42 lower cups with 1-⅛” (30mm) fork crowns
- HSRACE4030 fits EC44, ZS56 or IS52 lower cups with 1-⅛” (30mm) fork crowns
- HSRACE4033 fits EC44, ZS56 or IS52 lower cups with 1-¼” (33mm) fork crowns
- HSRACE40 fits EC44, ZS56 or IS52 lower cups with 1-1/2” (40mm) fork crowns
- HSRACE33 fits EC37 lower cups with 1-¼” (33mm) fork crowns
- HSRACE3330 fits EC37 lower cups with 1-1/8” (30mm) fork crowns
|
Headset Model |
Lower Bearing
(inner/outer angle) |
Lower Fork Race Size |
Crown Race Part # |
|
EC34│EC34 |
ACB3645SS 36/45 | 1-⅛” (30mm) |
HSRACE30 |
|
EC34│EC44 |
ACB6808CCSS 36/45 |
1-⅛” (30mm) |
HSRACE4030 |
|
1-¼” (33mm) |
HSRACE4033 |
||
|
1-½” (40mm) |
HSRACE40 |
||
|
EC37│EC37 |
ACB4545125LSS 45/45 |
1-⅛” (30mm) |
HSRACE3330 |
|
1-¼” (33mm) |
HSRACE33 |
||
|
ZS44│EC44 |
ACB6808CCSS 36/45 | 1-⅛” (30mm) | HSRACE4030 |
|
1-¼” (33mm) |
HSRACE4033 |
||
|
1-½” (40mm) |
HSRACE40 |
||
|
ZS44│ZS44 |
ACB3645SS 36/45 |
1-⅛” (30mm) |
HSRACE30 |
|
ZS44│ZS56 |
ACB6808CCSS 36/45 |
1-⅛” (30mm) |
HSRACE4030 |
|
1-¼” (33mm) |
HSRACE4033 |
||
|
1-½” (40mm) |
HSRACE40 |
||
|
IS41│IS41 |
ACB3645SS 36/45 | 1-⅛” (30mm) |
HSRACE30 |
|
IS41│IS52 |
ACB6808CCSS 36/45 |
1-⅛” (30mm) |
HSRACE4030 |
|
1-¼” (33mm) |
HSRACE4033 |
||
|
1-½” (40mm) |
HSRACE40 |
||
|
IS42│IS42 |
ACB36451125SS 36/45 | 1-⅛” (30mm) |
HSRACE30 |
| IS42│IS52 | ACB6808CCSS 36/45 | 1-⅛” (30mm) | HSRACE4030 |
|
1-¼” (33mm) |
HSRACE4033 |
||
|
1-½” (40mm) |
HSRACE40 |
