Twin Power Big Twin Clutch Hub – 1984–1989 Harley-Davidson (Replaces H-D® 37740-84A)
Restore your clutch with confidence using this precision-engineered replacement clutch hub from Twin Power. Built to OEM specifications with a steel spine and aluminum hub construction, this direct-fit replacement eliminates guesswork and gets your Big Twin back on the road without modifications.
Key Features
- Direct OEM replacement for H-D® part number 37740-84A
- Steel splines with aluminum hub for strength and reduced weight
- Withstands extreme heat and heavy-duty riding conditions
- Direct fit — no modifications required for compatible models
- Precision-engineered for seamless clutch engagement and reliable performance
Specifications
- Brand: Twin Power
- Part Number: 489599
- Replaces OEM: H-D® 37740-84A
- Weight: 3.8 lbs
- Fitment: 1984–1989 Harley-Davidson Big Twin (FXR, FLT, Softail, and more — see fitment list)
Compatible Models (1984–1989)
Fits a wide range of Harley-Davidson Big Twin models including FLHS, FLHT, FLHTC, FLHTCU, FLST, FLSTC, FXR, FXRC, FXRD, FXRDG, FXRS, FXRS-SP, FXRT, FXST, FXSTC, FXSTS, FXWG, FXLR, and FXRPF Police variants. See tags for full year/model fitment list.
