This Alton 12V AC Generator (ACG04 - Triumph) comes with a rectifying-regulator. This generator is suitable for all model years of the following vintage bikes:

• Pre-unit Triumph twins
• Tiger 100
• 6T Thunderbird
• 5T Speed Twin
• Ariel Fieldmaster KG and KH

Does not include the drive sprocket. You must use the original dynamo drive sprocket.