Focus Scientific

Rowan Astronomy Belt drive upgrade kit for Sky-Watcher HEQ5 Pro and Orion Sirius Pro mounts

Toothed belt and pulley upgrade kit for the Sky-Watcher HEQ5 and Orion Sirius computerized equatorial mounts.

Quieten a loud, rattle-prone drive, and reduces straight-cut spur gear errors introduced into tracking.

This kit utilizes the factory gear ratio, to maintain compatibility with the factory Synscan hand controller. You don't need to run ASCOM with EQMOD software to use this kit. Compatible with 3mm and 4mm diameter pinion gear holes.

For an additional $60 labour, we can install this kit for you, either in a brand-new mount, or one you already own. Labour price doesn't include shipping.


  • Right ascension upgrade
    • 2 pulleys, toothed belt, and idler pully
  • Declination upgrade
    • 2 pulleys, toothed belt, and idler pully
  • Spacer to go between the motor housing and motor cover
  • Hex wrenches


  • Orion Sirius Pro equatorial mount
  • Sky-Watcher HEQ5 Pro mount

Note: Pinion gear puller not included.