Sun Bike Rear Derailleur with HookRace RDM57 7/8 speed (long cage)

Sun Shift Derailleur Race RDM-57 for 7 or 8 speed bicycle

New rear transmission gear change housing adaptable for road or city bike, eBike or VAE electric bike, gravel, mountain bike (all-terrain bike), trekking...

The rear derailleur is attached to the bicycle frame. It moves sideways to guide the chain over the rear wheel cassette to change cogs. This spring mechanism also maintains a constant chain tension so as not to derail.

Technical characteristics and dimensions of the 7V-8V cassette derailleur

• Brand: SunRace
• Model: RDM 57
• Materials: steel and plastic
• Colour: black
• Clevis type (roller support cage): long
• Gear shift control: by cable (mechanical)
• Maximum number of teeth of the largest cassette cog: 34 (34)
• Mass: 335 grams
• Fixing thread diameter (direct, conventional fixing): 10 mm (delivered without frame bracket)
• Derailleur compatible with 7 or 8-speed road and off-road drivetrains