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 Adaptor 8 includes ADF001 4" - 5" adaptor  

Click here for the Sigmadrive selection guide

SIGMADRIVE MODEL: SD55.

Suitable for Engines from 5hp to 100hp. Dependent on RPM and Gearbox reduction.

Available for  Metric & Imperial shafts sizes between 25mm and 1-1/2″ range.

Example of standard 4″ Gearbox Adaptors – PRM, HURTH, BORG WARNER, TMC, ZF, YANMAR & VOLVO*