Shimano SLX RD-M7100 12 Speed Rear Derailleur
This superb model features a low-profile design which provides you with an advanced level of shifting performance, so you can confidently dominate on the trails. Weave your way around the mountain thanks to its fast gear shifting performance which ensures your drivetrain remains stable, even on the roughest of terrain conditions. This is a perfect choice of upgrade for off-road thrill-seekers who want smoother and more precise gear shifting performance. This 12-Speed derailleur offers fast and dependable shifting for more stable performance on rough off-road terrains. It also features a low-profile design that's optimised for superior shifting accuracy on wide-ranging 12-Speed Shimano drivetrain systems. It ensures advanced shifting performance and more confidence to enjoy the trails and its added pulley cage bumper both protects it from trailside obstacles and also keeps it running silently in all gear positions. Technologies: Shimano Shadow RD+: Less distraction and a quieter drive train. The rear derailleur stabiliser reduces chain slap. A simple solution for chain drop. Lighter and more efficient than a roller type chain device.
This superb model features a low-profile design which provides you with an advanced level of shifting performance, so you can confidently dominate on the trails. Weave your way around the mountain thanks to its fast gear shifting performance which ensures your drivetrain remains stable, even on the roughest of terrain conditions. This is a perfect choice of upgrade for off-road thrill-seekers who want smoother and more precise gear shifting performance. This 12-Speed derailleur offers fast and dependable shifting for more stable performance on rough off-road terrains. It also features a low-profile design that's optimised for superior shifting accuracy on wide-ranging 12-Speed Shimano drivetrain systems. It ensures advanced shifting performance and more confidence to enjoy the trails and its added pulley cage bumper both protects it from trailside obstacles and also keeps it running silently in all gear positions. Technologies: Shimano Shadow RD+: Less distraction and a quieter drive train. The rear derailleur stabiliser reduces chain slap. A simple solution for chain drop. Lighter and more efficient than a roller type chain device.
This superb model features a low-profile design which provides you with an advanced level of shifting performance, so you can confidently dominate on the trails. Weave your way around the mountain thanks to its fast gear shifting performance which ensures your drivetrain remains stable, even on the roughest of terrain conditions. This is a perfect choice of upgrade for off-road thrill-seekers who want smoother and more precise gear shifting performance. This 12-Speed derailleur offers fast and dependable shifting for more stable performance on rough off-road terrains. It also features a low-profile design that's optimised for superior shifting accuracy on wide-ranging 12-Speed Shimano drivetrain systems. It ensures advanced shifting performance and more confidence to enjoy the trails and its added pulley cage bumper both protects it from trailside obstacles and also keeps it running silently in all gear positions. Technologies: Shimano Shadow RD+: Less distraction and a quieter drive train. The rear derailleur stabiliser reduces chain slap. A simple solution for chain drop. Lighter and more efficient than a roller type chain device.
This superb model features a low-profile design which provides you with an advanced level of shifting performance, so you can confidently dominate on the trails. Weave your way around the mountain thanks to its fast gear shifting performance which ensures your drivetrain remains stable, even on the roughest of terrain conditions. This is a perfect choice of upgrade for off-road thrill-seekers who want smoother and more precise gear shifting performance. This 12-Speed derailleur offers fast and dependable shifting for more stable performance on rough off-road terrains. It also features a low-profile design that's optimised for superior shifting accuracy on wide-ranging 12-Speed Shimano drivetrain systems. It ensures advanced shifting performance and more confidence to enjoy the trails and its added pulley cage bumper both protects it from trailside obstacles and also keeps it running silently in all gear positions. Technologies: Shimano Shadow RD+: Less distraction and a quieter drive train. The rear derailleur stabiliser reduces chain slap. A simple solution for chain drop. Lighter and more efficient than a roller type chain device.
in 29 offers
The lowest price for Shimano SLX RD-M7100 12 Speed Rear Derailleur right now is $88.82 at Cicli Mattio AU, compared across 27 retailers.
The all-time low was $18.74 on 6 June 2026 — today's price is 374% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 2 July 2026.
Last updated at 02/07/2026 20:25:43
Shimano SLX RD-M7100 SLX 12-Speed Rear derailleur, Shadow+, SGS, for Single,Black
Free delivery
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 - SGS RD-M7100 Rear Derailleur Black/Dark Grey 12s
Delivery $50
Shimano SLX M7100 Rear Derailleur - 12 Speed - Black / Long Cage SGS / 12 Speed
Delivery $45.37
Shimano SLX RD-M7100-SGS 12S Cage Long
Delivery between Fri – Mon $41.32
Shimano Rear Derailleur SLX RD-M7100 12 Speed 10-51T SGS-Type
Shimano SLX RD-M7100 Rear Derailleur
Delivery between 7–15 July $9.50
Shimano RD-M7100 Rear Derailleur SLX Shadow 12-Speed
Delivery between 6–15 July $12.94
Shimano RD-M7100 Rear Derailleur SLX 12-Speed 51T Max
Delivery between 3–13 July $12.95
SHIMANO RD-M7100 12S
Delivery between 8–13 July $39.09
Shimano SLX RD-M7100 12 Speed Rear Derailleur - Long
Free delivery between Sat – Wed
originally posted on jensonusa.com
I have been running this since summer 2020 and it still performs flawlessly. No tuneups been needed in that time except maybe a couple clicks on the shifter's barrel adjuster. I paired it with the XT shifter like some of the other commenters here since Shimano's 12 speed drivetrain components are interoperable from Deore all the way up to XTR. I have the 10-45 tooth cassette and realistically I would have been equally happy with the 11-46 range on Shimano's 11 speed system because I usually find myself shifting 2 or 3 gears at a time (which, of course, this derailleur can handle easily).
originally posted on biketart.com
I purchased this mech as a replacement for my 2019 XT rear mech that had had one too many rock encounters... :(It is identical to the naked eye and has performed exactly the same. Large jockeys give low resistance and shifting is as expected with a premium shimano product.
originally posted on jensonusa.com
A higher spec RD looks flashy but this works really well and is inexpensive. Spend the extra $$ on an XT shifter, where you'll really notice a difference in feel and performance. The only "significant" difference between this and the XT mech is that it has bushings rather than bearings - but I doubt most people could ever notice a difference and there's a good chance you'll smoke it on a rock or a root before you'd be wanting to replace the bearings/jockey wheels anyway. Replace it with another new SLX RD and you're laughing,.
| Cage Length | Long Cage |
| Derailleur Component | Rear Derailleur |
| Speeds | 12 Speed |
| Number of gears | 12 speed |
| Max cassette range | Can handle up to a 10-51T cassette |
Shimano SLX RD-M7100 SLX 12-Speed Rear derailleur, Shadow+, SGS, for Single,Black
Free delivery
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 - SGS RD-M7100 Rear Derailleur Black/Dark Grey 12s
Delivery $50
Shimano SLX M7100 Rear Derailleur - 12 Speed - Black / Long Cage SGS / 12 Speed
Delivery $45.37
Shimano SLX RD-M7100-SGS 12S Cage Long
Delivery between Fri – Mon $41.32
Shimano Rear Derailleur SLX RD-M7100 12 Speed 10-51T SGS-Type
I have been running this since summer 2020 and it still performs flawlessly. No tuneups been needed in that time except maybe a couple clicks on the shifter's barrel adjuster. I paired it with the XT shifter like some of the other commenters here since Shimano's 12 speed drivetrain components are interoperable from Deore all the way up to XTR. I have the 10-45 tooth cassette and realistically I would have been equally happy with the 11-46 range on Shimano's 11 speed system because I usually find myself shifting 2 or 3 gears at a time (which, of course, this derailleur can handle easily).
I purchased this mech as a replacement for my 2019 XT rear mech that had had one too many rock encounters... :(It is identical to the naked eye and has performed exactly the same. Large jockeys give low resistance and shifting is as expected with a premium shimano product.
A higher spec RD looks flashy but this works really well and is inexpensive. Spend the extra $$ on an XT shifter, where you'll really notice a difference in feel and performance. The only "significant" difference between this and the XT mech is that it has bushings rather than bearings - but I doubt most people could ever notice a difference and there's a good chance you'll smoke it on a rock or a root before you'd be wanting to replace the bearings/jockey wheels anyway. Replace it with another new SLX RD and you're laughing,.
My Specialized e-bike came fitted with SRAM eagle (12), works fine, but I'm dyed in the wool Shimano. Was going to get XTR, but came across this, virtually as good, 1/4 the price, weakened & bought.All fitted, easy set up, no issues whatsoever. Thanks.Just for info, Shimano say 'max 51t, works fine on 52 (Thought I'd have to grind one off.........)
I purchased the Shimano SLX to replace the one that came on my bike due to an impact it took from a tumble on the trail lol. Shipping was quick and it was really easy to install. After the install I took my bike for a spin around the block to test the shifting, which was buttery smooth. Great product!
I purchased the RD- M7100 with XT SL-8100 Shifter to replace my Sram GX Eagle RD & Shifter. I had previously upgrade to the GX from SX which was fairly ordinary. The GX RD was an improvement but the GX was never what i expected so I decided to go for the Shimano RD-M7100/ SL-M8100. This has provided cleaner, quieter consistent shifting which i was looking for. On the basis of price vs performance this Shimano combination is an excellent choice.
Bought as a replacement due to a damaged jockey wheel cage. Relatively easy to set up after a few You tube tutorials..essential to line up the scratch line on the inner cahe with the lower edge of the chain. Fast delivery and turnaround, ordered 2.30 Friday, delivered 11 o'clock Ssturdsy morning.
Bought to replace my SRAM SX. Twinned with the slx shifter works like a dream on the eagle cassette. No adjustments once set up and the multiple shift on the shifter is a nice touch. Would certainly recommend as a replacement to the eagle deralliuer. Even swapped my ceramic jockeys over from the SX deralliuer and haven't had any problems
Works great. Exactly as expected. Had a full XT 12 speed drivetrain build and nailed the derailleur on a rock. Ended up needing a new cassette and derailleur. After reading many reviews, I decided to go with SLX on both over XT to save the money. A small weight penalty, but I couldn't tell you the difference in performance. SLX works flawless. Highly recommend if you are looking for high performance, but not worried about a few extra grams.
have Xt 12 speed on my ebike and full suspension bike, works well... just built up a Nukeproof Scout frame in blue , and went for slx because it has a blue tinge to it, and I had a couple of other slx parts already ... was surprised how well it worked , almost feels better than xt ! well happy with it. hopefully it will last a similar time to xt too.
| Cage Length | Long Cage |
| Derailleur Component | Rear Derailleur |
| Speeds | 12 Speed |
| Number of gears | 12 speed |
| Max cassette range | Can handle up to a 10-51T cassette |
