RockShox Judy TK (100, QR, Coil) Fork
What the checker says283will not fit5check before you buy257worth knowing
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 5684 verified mountain bike parts in this catalog. 4665 produced no finding of any kind.
Will not fit
- Will not fiterror · FrameSteerer mismatch: Fork is Straight 1.125 (single-crown) but Frame headset is Tapered (1.5-1.125). On 233 of the 258 verified frames in this catalog.
- Will not fiterror · Front TireFront wheel size mismatch: Fork 29", Front tire 27.5". On 223 of the 617 verified tires in this catalog.
- Will not fiterror · Front WheelFront axle mismatch: Fork is 9x100-qr but Front wheel hub is Boost 15x110. On 220 of the 270 verified front wheels in this catalog.
- Will not fiterror · Front WheelFront wheel size mismatch: Fork 29", Front wheel 27.5". On 90 of the 270 verified front wheels in this catalog.
- Will not fiterror · Front RimFront wheel size mismatch: Fork 29", Front wheel 27.5". On 33 of the 75 verified rims in this catalog.
- Will not fiterror · Front WheelFront axle mismatch: Fork is 9x100-qr but Front wheel hub is 20x110 Boost (DH). On 32 of the 270 verified front wheels in this catalog.
- Will not fiterror · Front HubFront axle mismatch: Fork is 9x100-qr but Front wheel hub is Boost 15x110. On 31 of the 40 verified front hubs in this catalog.
Fork travel min, Frame. 166 more findings from the same check, on up to 2 of the 258 verified frames each.
Headset steerer, Headset. 66 more findings from the same check, on up to 1 of the 70 verified headsets each.
Wheel config, Frame. 19 more findings from the same check, on up to 1 of the 258 verified frames each.
Front brake mount, Front Brake. 6 more findings from the same check, on up to 1 of the 92 verified brakes each.
Front axle, Front Wheel. 3 more findings from the same check, on up to 10 of the 270 verified front wheels each.
Front axle, Front Hub. 2 more findings from the same check, on up to 2 of the 40 verified front hubs each.
Front wheel size, Front Rim. 2 more findings from the same check, on up to 3 of the 75 verified rims each.
Front wheel size, Front Tire. 2 more findings from the same check, on up to 21 of the 617 verified tires each.
Front wheel size, Front Wheel. 2 more findings from the same check, on up to 3 of the 270 verified front wheels each.
Wheel config, Rear Rim. 2 more findings from the same check, on up to 3 of the 75 verified rims each.
Wheel config, Rear Tire. 2 more findings from the same check, on up to 21 of the 617 verified tires each.
Wheel config, Rear Wheel. 2 more findings from the same check, on up to 7 of the 607 verified rear wheels each.
Front rotor min, Front Rotor. 1 more finding from the same check, on up to 18 of the 177 verified rotors 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 · Front RotorFront rotor: 203mm exceeds the fork max of 185mm. A post-mount adapter is the part that steps a caliper up to a bigger rotor, sold in the maker’s own discrete size steps (commonly +20mm, e.g. 160 to 180mm or 180 to 200mm) rather than for any gap - and not every step is offered for every caliper model, so check the maker’s own fitment before buying. On 40 of the 177 verified rotors in this catalog.
- Check before you buywarning · FrameSteerer mismatch: Fork is Straight 1.125 (single-crown) but Frame headset is Straight 1.125 (dual-crown). Both are the same straight 1-1/8in steerer, so the headset itself is not the question. Check that this frame is rated for a dual-crown fork (head tube length and total headset stack) before you build it. On 17 of the 258 verified frames in this catalog.
- Check before you buywarning · Front RotorFront rotor: 220mm exceeds the fork max of 185mm. A post-mount adapter is the part that steps a caliper up to a bigger rotor, sold in the maker’s own discrete size steps (commonly +20mm, e.g. 160 to 180mm or 180 to 200mm) rather than for any gap - and not every step is offered for every caliper model, so check the maker’s own fitment before buying. On 15 of the 177 verified rotors in this catalog.
- Check before you buywarning · Front RotorFront rotor: 200mm exceeds the fork max of 185mm. A post-mount adapter is the part that steps a caliper up to a bigger rotor, sold in the maker’s own discrete size steps (commonly +20mm, e.g. 160 to 180mm or 180 to 200mm) rather than for any gap - and not every step is offered for every caliper model, so check the maker’s own fitment before buying. On 11 of the 177 verified rotors in this catalog.
- Check before you buywarning · Front RotorFront rotor: 223mm exceeds the fork max of 185mm. A post-mount adapter is the part that steps a caliper up to a bigger rotor, sold in the maker’s own discrete size steps (commonly +20mm, e.g. 160 to 180mm or 180 to 200mm) rather than for any gap - and not every step is offered for every caliper model, so check the maker’s own fitment before buying. On 5 of the 177 verified rotors in this catalog.
Worth knowing
- Worth knowinginfo · FrameHeadset: Antidote Carbonjack takes ZS44 upper / ZS56 lower cups (S.H.I.S.) to mount the fork - many frames ship with one; pick one here if yours does not. On 2 of the 258 verified frames in this catalog.
Headset advisory, Frame. 256 more findings from the same check, on up to 1 of the 258 verified frames each.
Open a variant in the builder to see the ones that apply to your own parts.
$230.00 MSRP·1750 g
What the maker states
- Travel
- 100 mm of travel (maker-stated)
- Wheel
- Built for a 29" wheel
- Axle
- Front axle 9x100-qr
- Steerer
- Straight 1.125 (single-crown)
- Minimum front rotor
- Front rotor no smaller than 160 mm
- Maximum front rotor
- Front rotor up to 185 mm (maker-stated maximum)
The rest of what the maker states1 stated·3 not published
- Brake mount Post mount.
3 further fields the checker looks for are not published by RockShox, so we leave them blank rather than estimate them, and those 3 checks stay silent on this fork. They are maximum tire, maximum tire mm and maximum tire basis. Each is recorded as “not stated by the maker (not checked)”.
Source: the maker’s page. Last checked 2026-07-16.
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) Will not fit
- ACID SLX 30 rear (Rear Wheel) No conflicts found
- Acros ZS44/ZS56 (Headset) Will not fit
6 of 1831 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.