Twin Power™ advance unit screw precisely replaces H-D 3570, securing the timer assembly for accurate ignition timing on 1970-early 1979 FL/FX Big Twins and 1971-1979 XL Sportsters.
- Direct OEM replacement ensures stable advance mechanism operation during distributor service
- High-quality steel construction resists vibration and wear in Shovelhead-era engines
- Essential hardware for complete ignition rebuilds or points conversions
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| Air Freight Prohibited: false |
| Not Carb Approved: true |
| Carb Acknowledgement Required: true |
| Ltl Freight Required: false |
| Prop 65: Unknown |
| Part Type: powersports |
| Epa: N/A |
| Regular Stock: t |
| Units Per Sku: 1 |
