Shimano XTR RD-M9120-SGS 12-Speed Rear Derailleur Long Cage MTB IRDM9120SGS

Shimano XTR RD-M9120 is a genuine Shimano rear derailleur delivering precise, reliable shifting for mountain bike riders.

Genuine Shimano XTR — brand new in retail packaging.

Will it fit? This is a 12-Speed rear derailleur (Long Cage (SGS), 10-45T). For Shimano 12-Speed mountain drivetrains — match speeds and cassette range.

Key Specifications

Technology Highlights

• ✓ SHADOW RD+ clutch keeps the chain taut and quiet, cutting chain slap and dropped chains on rough terrain.
• ✓ Larger 13T sealed-bearing pulleys improve chain management and efficiency.
• ✓ Optimized for 10-45T drivetrains.
• ✓ Long cage (SGS) handles a wide cassette range.
• ✓ Genuine Shimano quality — consistent performance and durability.

What's in the Box

• 1 × Shimano XTR RD-M9120
• Mounting hardware & documentation (as supplied)
• Original Shimano retail packaging