Fit illustration: Black RD-TY300-SGS long-cage rear derailleur with an open rear-axle hook.

RD-TY300-SGS 6/7-Speed Rear Derailleur, Axle Hook

$17.49
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Fit illustration: Black RD-TY300-SGS long-cage rear derailleur with an open rear-axle hook.
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RD-TY300-SGS 6/7-Speed Rear Derailleur, Axle Hook

$17.49

Product highlights

  • Axle-hook mounting — The open hook seats under the rear axle nut. Compare its shape with your current mount.
  • Rear speeds — For a compatible 6- or 7-speed drivetrain with a matching indexed shifter.
  • Long cage — The SGS cage has two pulleys. Compare its length and clearance with your existing setup.
  • Largest rear sprocket — Check that the largest rear sprocket has 34 teeth or fewer.
  • In the box — Includes one black RD-TY300-SGS rear derailleur with its axle hook.

Rear 6 or 7 speed. SGS long cage. Open axle hook.

See photos and fit details

Black RD-TY300-SGS rear derailleur with the open axle-hook mounting plate on a workbench

Airuzara / Fit & use

Identify the open axle hook

Compare the open plate around the rear axle with the mount on your bike.

Rear 6 or 7 speed. SGS long cage. Open axle hook.

Context illustration

Fit checklist

Check before you order

What does an axle-hook mount look like?

Look for an open mounting plate at the rear axle. Compare the outline and position with the part already on your bicycle.

Do I need the threaded TY300?

Compare the threaded version if your current derailleur screws into the frame hanger.

Compare the threaded TY300
Full specifications and box contents

A long-cage rear derailleur for a compatible 6- or 7-speed drivetrain with an open rear-axle hook.

Fit and specifications

  • Model RD-TY300-SGS
  • Rear speeds 6 or 7, with a matching indexed shifter
  • Mount Open hook that fits under the rear axle nut
  • Cage SGS long cage
  • Largest rear sprocket 34 teeth maximum

Check before you order

  • Compare the open mounting hook with your current derailleur.
  • Count the rear sprockets and verify the largest sprocket tooth count.

In the box

One black RD-TY300-SGS rear derailleur with its axle hook.

Related products RD-TY300-SGS threaded-hanger version

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