Reserve 31|DH rear Rear Wheel
What the checker says288will not fit15check before you buy
Run variant by variant through the mountain bike 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 5567 verified mountain bike parts in this catalog. 4776 produced no finding of any kind; that is 31|DH rear 27.5 (Shimano HG). 31|DH rear (XD) clears 4569. Each variant produces 99 to 194 distinct errors and 15 distinct warnings.
Will not fit
- Will not fiterror · Rear TireRear wheel size mismatch: Rear wheel 27.5", Rear tire 29". On 370 of the 617 verified tires in this catalog. Applies to 2 of 4 variants.
- Will not fiterror · FrameRear axle mismatch: Frame is Boost 148x12 but Rear wheel hub is SuperBoost 157x12. On 228 of the 258 verified frames in this catalog. Applies to all 4 variants.
- Will not fiterror · Front TireUnsupported wheel setup: front 27.5" / rear 29" matches no configuration (24"/24", 26"/26", 27.5"/27.5", 29"/29", 32"/32", mullet = 29" front / 27.5" rear). On 223 of the 617 verified tires in this catalog. Applies to 2 of 4 variants.
- Will not fiterror · Rear TireRear wheel size mismatch: Rear wheel 29", Rear tire 27.5". On 223 of the 617 verified tires in this catalog. Applies to 2 of 4 variants.
- Will not fiterror · ForkUnsupported wheel setup: front 27.5" / rear 29" matches no configuration (24"/24", 26"/26", 27.5"/27.5", 29"/29", 32"/32", mullet = 29" front / 27.5" rear). On 157 of the 490 verified forks in this catalog. Applies to 2 of 4 variants.
- Will not fiterror · Front WheelUnsupported wheel setup: front 27.5" / rear 29" matches no configuration (24"/24", 26"/26", 27.5"/27.5", 29"/29", 32"/32", mullet = 29" front / 27.5" rear). On 90 of the 270 verified front wheels in this catalog. Applies to 2 of 4 variants.
- Will not fiterror · Rear RotorRear rotor interface mismatch: Center Lock rotor on 6-bolt rear hub - no adapter exists for this direction. On 65 of the 177 verified rotors in this catalog. Applies to all 4 variants.
- Will not fiterror · Front RimUnsupported wheel setup: front 27.5" / rear 29" matches no configuration (24"/24", 26"/26", 27.5"/27.5", 29"/29", 32"/32", mullet = 29" front / 27.5" rear). On 33 of the 75 verified rims in this catalog. Applies to 2 of 4 variants.
Wheel config, Frame. 186 more findings from the same check, on up to 2 of the 258 verified frames each.
Freehub, Cassette. 73 more findings from the same check, on up to 1 of the 60 verified cassettes each.
Rear wheel size, Rear Tire. 4 more findings from the same check, on up to 21 of the 617 verified tires each.
Wheel config, Front Rim. 4 more findings from the same check, on up to 3 of the 75 verified rims each.
Wheel config, Front Tire. 4 more findings from the same check, on up to 21 of the 617 verified tires each.
Wheel config, Front Wheel. 4 more findings from the same check, on up to 3 of the 270 verified front wheels each.
Rear axle, Frame. 3 more findings from the same check, on up to 5 of the 258 verified frames each.
Wheel config, Fork. 2 more findings from the same check, on up to 12 of the 490 verified forks each.
Open a variant in the builder to see the ones that apply to your own parts.
Check before you buy
- Check before you buywarning · Rear TireRear tire width: 2.2in is below the wheel maker's recommended minimum of 2.4in for this rim - a too-narrow tire squares off and loses bead support on a wide rim. On 34 of the 617 verified tires in this catalog. Applies to all 4 variants.
- Check before you buywarning · Rear TireRear tire width: 2.3in is below the wheel maker's recommended minimum of 2.4in for this rim - a too-narrow tire squares off and loses bead support on a wide rim. On 34 of the 617 verified tires in this catalog. Applies to all 4 variants.
- Check before you buywarning · Rear TireRear tire width: 2.25in is below the wheel maker's recommended minimum of 2.4in for this rim - a too-narrow tire squares off and loses bead support on a wide rim. On 24 of the 617 verified tires in this catalog. Applies to all 4 variants.
- Check before you buywarning · Rear TireRear tire width: 2.35in is below the wheel maker's recommended minimum of 2.4in for this rim - a too-narrow tire squares off and loses bead support on a wide rim. On 19 of the 617 verified tires in this catalog. Applies to all 4 variants.
- Check before you buywarning · Rear TireRear tire width: 2.1in is below the wheel maker's recommended minimum of 2.4in for this rim - a too-narrow tire squares off and loses bead support on a wide rim. On 15 of the 617 verified tires in this catalog. Applies to all 4 variants.
- Check before you buywarning · Rear TireRear tire clearance: 2.8in tire is wider than the rear wheel's 2.6in max. On 15 of the 617 verified tires in this catalog. Applies to all 4 variants.
- Check before you buywarning · Rear TireRear tire clearance: 3in tire is wider than the rear wheel's 2.6in max. On 5 of the 617 verified tires in this catalog. Applies to all 4 variants.
- Check before you buywarning · Rear TireRear tire width: 2.05in is below the wheel maker's recommended minimum of 2.4in for this rim - a too-narrow tire squares off and loses bead support on a wide rim. On 2 of the 617 verified tires in this catalog. Applies to all 4 variants.
Rear tire rim min, Rear Tire. 4 more findings from the same check, on up to 1 of the 617 verified tires each.
Rear tire rim, Rear Tire. 3 more findings from the same check, on up to 1 of the 617 verified tires each.
Open a variant in the builder to see the ones that apply to your own parts.
$769.00 MSRP·958 to 1003 g
What the maker states
- Wheel
- Built for a 27.5" wheel (on 2 of 4 variants); Built for a 29" wheel (on 2 of 4 variants)
- Freehub
- / driver Shimano HG (on 2 of 4 variants); / driver SRAM XD (on 2 of 4 variants)
- Rotor mount
- 6-bolt
- Internal width
- Internal rim width 31 mm
- Hub
- Spacing SuperBoost 157x12
- Maximum tire
- Tire up to 2.6" (maker-stated maximum)
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.
4 verified variants
| Variant | Wheel | Freehub | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|---|---|
| 31|DH rear (XD) | Built for a 29" wheel | / driver SRAM XD | $769.00 | 1003 g | maker’s page | 2026-09-22 | Build with this |
| 31|DH rear (Shimano HG) | Built for a 29" wheel | / driver Shimano HG | $769.00 | 1003 g | maker’s page | 2026-09-22 | Build with this |
| 31|DH rear 27.5 (XD) | Built for a 27.5" wheel | / driver SRAM XD | $769.00 | 958 g | maker’s page | 2026-09-22 | Build with this |
| 31|DH rear 27.5 (Shimano HG) | Built for a 27.5" wheel | / driver Shimano HG | $769.00 | 958 g | maker’s page | 2026-09-22 | Build with this |
The rest of what the maker states1 stated·4 not published
- Tire no narrower than 2.4".
4 further fields the checker looks for are not published by Reserve, so we leave them blank rather than estimate them, and those 4 checks stay silent on this rear wheel. They are maximum tire mm, maximum tire basis, tire range kind and maximum system weight. 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 2026-09-22.
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.
- 5DEV R-SPEC Trail/Enduro Cranks (Crankset) No conflicts found
- 9point8 Fall Line (Dropper Post) No conflicts found
- 9point8 Stout (31.8, 30mm) (Stem) No conflicts found
- ACID SLX 30 front (Front Wheel) No conflicts found
- Acros ZS44/ZS56 (Headset) No conflicts found
- Acros ZS56/ZS56 (Headset) No conflicts found
6 of 1753 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.