Shimano Deore Rear Derailleur
What the checker says218will not fit
Run variant by variant through the e-MTB builder’s own engine. Every sentence below is the checker’s, unedited. Nothing here says this part fits your bike; it says what it does and does not fit among the parts we hold.
Checked against 442 verified e-MTB parts in this catalog. 346 produced no finding of any kind; that is Deore M6260 Di2 12-speed (wired) (2026). Deore M6260 Di2 11-speed LinkGlide (wired) (2026) clears 335. Each variant produces 83 to 84 distinct errors and 0 distinct warnings.
Will not fit
- Will not fiterror · CassetteSpeed mismatch: Derailleur 11s, Cassette 12s. Shifter, derailleur and cassette must be the same speed count. On 30 of the 58 verified cassettes in this catalog. Applies to 1 of 3 variants.
- Will not fiterror · ShifterSpeed mismatch: Shifter 12s, Derailleur 11s. Shifter, derailleur and cassette must be the same speed count. On 28 of the 53 verified shifters in this catalog. Applies to 1 of 3 variants.
- Will not fiterror · ShifterDrivetrain mismatch: Shifter = shimano-12, Derailleur = shimano-linkglide. Shifter, derailleur and cassette must be one system. On 19 of the 53 verified shifters in this catalog. Applies to 1 of 3 variants.
- Will not fiterror · CassetteDrivetrain mismatch: Derailleur = shimano-12, Cassette = shimano-linkglide. Shifter, derailleur and cassette must be one system. On 16 of the 58 verified cassettes in this catalog. Applies to 2 of 3 variants.
- Will not fiterror · CassetteDrivetrain mismatch: Derailleur = shimano-linkglide, Cassette = shimano-12. Shifter, derailleur and cassette must be one system. On 14 of the 58 verified cassettes in this catalog. Applies to 1 of 3 variants.
- Will not fiterror · CassetteCassette too big: 52T cassette exceeds the Shimano Deore Di2 RD-M6250 SGS max of 51T. On 13 of the 58 verified cassettes in this catalog. Applies to 1 of 3 variants.
- Will not fiterror · CassetteCassette too big: 52T cassette exceeds the Shimano Deore M6260 Di2 11-speed LinkGlide (wired) max of 50T. On 13 of the 58 verified cassettes in this catalog. Applies to 1 of 3 variants.
- Will not fiterror · CassetteCassette too big: 52T cassette exceeds the Shimano Deore M6260 Di2 12-speed (wired) max of 51T. On 13 of the 58 verified cassettes in this catalog. Applies to 1 of 3 variants.
Emtb actuation, Shifter. 150 more findings from the same check, on up to 1 of the 53 verified shifters each.
Emtb drivetrain system, Shifter. 23 more findings from the same check, on up to 11 of the 53 verified shifters each.
Emtb drivetrain system, Cassette. 18 more findings from the same check, on up to 9 of the 58 verified cassettes each.
Emtb drivetrain speeds, Cassette. 9 more findings from the same check, on up to 11 of the 58 verified cassettes each.
Emtb drivetrain speeds, Shifter. 9 more findings from the same check, on up to 10 of the 53 verified shifters each.
Emtb cassette capacity, Cassette. 1 more finding from the same check, on up to 9 of the 58 verified cassettes each.
Open a variant in the builder to see the ones that apply to your own parts.
$435.00 MSRP·518 g
What the maker states
- Actuation
- Electronic (wireless)
- Mount
- Standard hanger
- System
- Drivetrain system Shimano 12-speed (on 2 of 3 variants); Drivetrain system Shimano LinkGlide (CUES) (on 1 of 3 variants)
- Speeds
- 12-speed (rear index count the maker rates it for) (on 2 of 3 variants); 11-speed (rear index count the maker rates it for) (on 1 of 3 variants)
- Maximum cog
- Largest cog 51 teeth (on 2 of 3 variants); Largest cog 50 teeth (on 1 of 3 variants)
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.
3 verified variants
| Variant | System | Speeds | Maximum cog | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|---|---|---|
| Deore Di2 RD-M6250 SGS (2026) | Drivetrain system Shimano 12-speed | 12-speed (rear index count the maker rates it for) | Largest cog 51 teeth | $435.00 | 518 g | maker’s page | 2026-08-20 | Build with this |
| Deore M6260 Di2 12-speed (wired) (2026) | Drivetrain system Shimano 12-speed | 12-speed (rear index count the maker rates it for) | Largest cog 51 teeth | $435.00 | not stated | maker’s page | 2026-09-03 | Build with this |
| Deore M6260 Di2 11-speed LinkGlide (wired) (2026) | Drivetrain system Shimano LinkGlide (CUES) | 11-speed (rear index count the maker rates it for) | Largest cog 50 teeth | $435.00 | not stated | maker’s page | 2026-09-03 | Build with this |
The rest of what the maker states2 not published
2 further fields the checker looks for are not published by Shimano, so we leave them blank rather than estimate them, and those 2 checks stay silent on this rear derailleur. They are maximum cog top and total capacity. Each is recorded as “not stated by the maker (not checked)”.
Source: each variant links the maker’s own page in the table above. Last checked 2026-08-20 to 2026-09-03.
Checked against
The checker ran this model against every verified part below that it has a slot for, the same way it checks a build in the builder. What follows is the verdict it actually produced for that specific pairing — not a recommendation, and not a guarantee any of these parts fits your own bike.
- 9point8 Fall Line 30.9 / 125mm (INLINE) (Dropper Post) No conflicts found
- BikeYoke Divine 2.0 Dropper Post 31.6 / 125mm (Dropper Post) No conflicts found
- BikeYoke Divine SL Dropper Post 30.9 / 80mm (Dropper Post) No conflicts found
- BikeYoke Divine SL Rascal Dropper Post 30.9 / 80mm (Dropper Post) No conflicts found
- BikeYoke Revive 3.0 Dropper Post 30.9 / 125mm (Dropper Post) No conflicts found
- BikeYoke Revive Max 3.0 (34.9) Silver Ltd. Dropper Post 34.9 / 125mm (Dropper Post) No conflicts found
6 of 227 counterparts with a page of their own that the checker actually probed this model against, in alphabetical order by brand and model — never by price, popularity or the verdict itself.