Shimano XTR RD-M9100 12 Speed Rear Derailleur Black
Shimano XTR RD-M9100 12-Speed Rear Derailleur GS Medium Cage A top-of-the-range offering from Shimano, the XTR RD-M9100 12-Speed Rear Derailleur with a GS Medium Cage is the ideal addition to the performance mountain bike, giving outstanding gear shifting and durability through all trail conditions. Featuring a Shadow Plus design format, this rear derailleur possesses a super low profile and is lightweight. The optimally aligned slant angle of the design works in unison with the strong return spring to gift a super light but precise and positive gear shift action. The Shadow Plus configuration also features a stabilising switch that, when enabled, cancels chain bounce over rough terrain to grant more efficient drive and stable gear changes. The pulley cage uses two materials; carbon fibre for the outer plate to save weight and aluminium for the inner plate to increase rigidity and guarantee crisp actuation. This cage houses oversized 13 tooth pulley wheels with sealed bearings that prevent high chain tension in all gear ratios and reduce drivetrain friction markedly. Designed specifically for use with XTR M9100 1 x 12-speed gear setups, this rear derailleur can cope with sprocket sizes of up to 45T and has a capacity of 35 teeth.
Shimano XTR RD-M9100 12-Speed Rear Derailleur GS Medium Cage A top-of-the-range offering from Shimano, the XTR RD-M9100 12-Speed Rear Derailleur with a GS Medium Cage is the ideal addition to the performance mountain bike, giving outstanding gear shifting and durability through all trail conditions. Featuring a Shadow Plus design format, this rear derailleur possesses a super low profile and is lightweight. The optimally aligned slant angle of the design works in unison with the strong return spring to gift a super light but precise and positive gear shift action. The Shadow Plus configuration also features a stabilising switch that, when enabled, cancels chain bounce over rough terrain to grant more efficient drive and stable gear changes. The pulley cage uses two materials; carbon fibre for the outer plate to save weight and aluminium for the inner plate to increase rigidity and guarantee crisp actuation. This cage houses oversized 13 tooth pulley wheels with sealed bearings that prevent high chain tension in all gear ratios and reduce drivetrain friction markedly. Designed specifically for use with XTR M9100 1 x 12-speed gear setups, this rear derailleur can cope with sprocket sizes of up to 45T and has a capacity of 35 teeth.
Shimano XTR RD-M9100 12-Speed Rear Derailleur GS Medium Cage A top-of-the-range offering from Shimano, the XTR RD-M9100 12-Speed Rear Derailleur with a GS Medium Cage is the ideal addition to the performance mountain bike, giving outstanding gear shifting and durability through all trail conditions. Featuring a Shadow Plus design format, this rear derailleur possesses a super low profile and is lightweight. The optimally aligned slant angle of the design works in unison with the strong return spring to gift a super light but precise and positive gear shift action. The Shadow Plus configuration also features a stabilising switch that, when enabled, cancels chain bounce over rough terrain to grant more efficient drive and stable gear changes. The pulley cage uses two materials; carbon fibre for the outer plate to save weight and aluminium for the inner plate to increase rigidity and guarantee crisp actuation. This cage houses oversized 13 tooth pulley wheels with sealed bearings that prevent high chain tension in all gear ratios and reduce drivetrain friction markedly. Designed specifically for use with XTR M9100 1 x 12-speed gear setups, this rear derailleur can cope with sprocket sizes of up to 45T and has a capacity of 35 teeth.
Shimano XTR RD-M9100 12-Speed Rear Derailleur GS Medium Cage A top-of-the-range offering from Shimano, the XTR RD-M9100 12-Speed Rear Derailleur with a GS Medium Cage is the ideal addition to the performance mountain bike, giving outstanding gear shifting and durability through all trail conditions. Featuring a Shadow Plus design format, this rear derailleur possesses a super low profile and is lightweight. The optimally aligned slant angle of the design works in unison with the strong return spring to gift a super light but precise and positive gear shift action. The Shadow Plus configuration also features a stabilising switch that, when enabled, cancels chain bounce over rough terrain to grant more efficient drive and stable gear changes. The pulley cage uses two materials; carbon fibre for the outer plate to save weight and aluminium for the inner plate to increase rigidity and guarantee crisp actuation. This cage houses oversized 13 tooth pulley wheels with sealed bearings that prevent high chain tension in all gear ratios and reduce drivetrain friction markedly. Designed specifically for use with XTR M9100 1 x 12-speed gear setups, this rear derailleur can cope with sprocket sizes of up to 45T and has a capacity of 35 teeth.
in 16 offers
The lowest price for Shimano XTR RD-M9100 12 Speed Rear Derailleur Black right now is $241.62 at AliExpress.com - AliExpress-226247430, compared across 15 retailers.
The all-time low was $19.00 on 27 July 2024 — today's price is 1172% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 3 Nov 2026.
Last updated at 03/11/2026 19:33:44
SHIMANO XTR M9100 12-Speed Rear Derailleur
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SHIMANO XTR M9100 M9120 Rear Derailleur Shadow+ GS RD M9100 SGS Long Cage 12 Speed MTB Bicycle Bike
Delivery $12.91
Shimano XTR RD-M9100-SGS Cage Mid
Next-day delivery $39.71
Shimano XTR M9100 Rear Derailleur -12 Speed - Dark Grey / Black / Medium Cage GS / 11-12 Speed
Delivery $45.37
Shimano Xtr RD-M9100 Rear Derailleur
Delivery between 6–16 Nov $9.50
Change Shimano XTR 9100 1x12V / 11V SHADOW + GS short box
Delivery $63.99
Shimano Xtr Rd-m9100 Gs Rear Mtb Derailleur -new /nos 1x12-spd-
Delivery $68.44
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano RD-M9100 Rear Derailleur XTR 12-Speed 45T Max
Free delivery between 4–16 Nov
Shimano (Cycling) Xtr Rd-m9100 Rear Derailleur Shadow RD+ (12-speed) Irdm9100gs
Delivery between 10–12 Nov $108.53
Shimano RD-M9100 XTR Shadow+ Rear Derailleur 12-Speed
Free delivery between 9–13 Nov
originally posted on Google Customer Reviews
TOP
originally posted on pushys.com.au
Fast efficient and silent shiftingGood value for money
originally posted on biketart.com
Great item delivered very quickly, at a great priceWhat more could i ask for, great job Biketart
| Drivetrain Speed | 12-Speed |
| Total Capacity | 41T |
| Spring Type | Shimano Shadow RD+ |
| Compatible Chain | CN-M9100 |
SHIMANO XTR M9100 12-Speed Rear Derailleur
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
SHIMANO XTR M9100 M9120 Rear Derailleur Shadow+ GS RD M9100 SGS Long Cage 12 Speed MTB Bicycle Bike
Delivery $12.91
Shimano XTR RD-M9100-SGS Cage Mid
Next-day delivery $39.71
Shimano XTR M9100 Rear Derailleur -12 Speed - Dark Grey / Black / Medium Cage GS / 11-12 Speed
Delivery $45.37
Shimano Xtr RD-M9100 Rear Derailleur
Delivery between 6–16 Nov $9.50
TOP
Fast efficient and silent shiftingGood value for money
Great item delivered very quickly, at a great priceWhat more could i ask for, great job Biketart
I found the RD-M9100-GS XTR derailleur shifted better and aligned easier + provided more ground clearance than the XT RD-M8100-SGS since I'm using the 10-45 cassette.
I swapped the original SRAM XX1 11-speed setup (shifter, derailleur, cassette and chain) to Shimano XTR 12-speed on my new S-Works mtb after 150km of use and I can say Shimano shifts way better especially under load.
Was in the market for an XT mid cage 12 speed derailleur but they werent available anywhere so got the XTR instead. No regrets at this stage as this derailleur looks great and performs exceptionally well. Its fitted to my Canyon ebike and hasnt done much work so I cant comment on durability. Is it worth the price, time will tell.
| Drivetrain Speed | 12-Speed |
| Total Capacity | 41T |
| Spring Type | Shimano Shadow RD+ |
| Compatible Chain | CN-M9100 |
