Staff Answer
Jun 25, 2026 - 03:52 PM
Thanks for your inquiry! The Rhino-Rack SP309 is a Pioneer NG Backbone 6-Bolt Hardware Kit used to attach a Pioneer Platform (Generation 5/NG) to a compatible Rhino-Rack Backbone mounting system.
The hardware specifications are:
- Bolt size: M8 x 20 mm
- Base plate size: Approximately 20 x 30 mm
- Includes the required nuts and mounting hardware for a 6-bolt Backbone connection.
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