Clutch Hub. Fits Big Twin 1984-1989 with H-D 4-Bolt Clutch.

Features & Benefits:-

* Updated stronger billet version of the original cast alloy unit

* Replaces OEM # 37550-84

* Suggest Additional Purchase Clutch Hub Bearing # EMP-A-37906-84

Tech Tips:-

* Re-enforcement ring fits over the rear part of the hub were it slides over the mainshaft.