Robust 12-speed rear derailleur for wide-range MTB and gravel setups.

The SunRace RDMZ600 Medium 12-speed Rear Derailleur was specifically developed for 1x12-speed drivetrains on MTB and gravel bikes. With a gear range of 11 to 51 teeth, it is ideal for challenging trails, long climbs, and versatile off-road use.

An integrated chain stabilizer reduces chain slap and minimizes the risk of chain drops – especially on rough terrain. The robust aluminum construction ensures high durability and reliable performance even under adverse conditions.

With a manufacturer's weight of only 278 g, the RDMZ600 offers a strong combination of stability, efficiency, and low weight for modern 1x12 setups.

Highlights:

• 1x12-speed compatible: ideal for modern MTB & gravel drivetrains.
• 11–51 teeth: wide gear range.
• Integrated chain stabilizer: reduced chain movement off-road.
• Trail-ready: robust construction for off-road use.
• 278 g weight: light and efficient.

Technical Data:

• Model: RDMZ600 Medium
• Area of use: MTB, Gravel
• Shifting system: mechanical
• Gears front: 1-speed
• Gears rear: 12-speed
• Compatible chain: 12-speed
• Max. large sprocket: 51 teeth
• Min. small sprocket: 11 teeth
• Total capacity: 40 teeth
• Material: Aluminum
• Color: Black
• Weight: 278 g

Scope of delivery:

• 1 x SunRace RDMZ600 Medium 12-speed Rear Derailleur

EAN: 4711264330630 | Manufacturer no.: RDMZ600 MD-BOX

The SunRace RDMZ600 is a reliable 12-speed rear derailleur for demanding MTB and gravel riders who expect precise shifting and high durability off-road.