Surly Karate Monkey Frame
What the checker says1294will not fit12check before you buy188worth 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 5916 verified mountain bike parts in this catalog. 3425 produced no finding of any kind.
Will not fit
- Will not fiterror · ForkSteerer mismatch: Fork is Tapered (1.5-1.125) but Frame headset is Straight 1.125 (single-crown). On 429 of the 490 verified forks in this catalog.
- Will not fiterror · Dropper PostDropper too big: Frame seat tube is 30.9mm but Dropper is 31.6mm - a bigger post cannot fit a smaller tube. On 146 of the 350 verified dropper posts in this catalog.
- Will not fiterror · Rear WheelRear axle mismatch: Frame is Boost 148x12 but Rear wheel hub is SuperBoost 157x12. On 143 of the 607 verified rear wheels in this catalog.
- Will not fiterror · Dropper PostDropper too big: Frame seat tube is 30.9mm but Dropper is 34.9mm - a bigger post cannot fit a smaller tube. On 72 of the 350 verified dropper posts in this catalog.
- Will not fiterror · Rear HubRear axle mismatch: Frame is Boost 148x12 but Rear wheel hub is SuperBoost 157x12. On 27 of the 124 verified rear hubs in this catalog.
- Will not fiterror · Rear WheelRear axle mismatch: Frame is Boost 148x12 but Rear wheel hub is 150x12 (DH, pre-Boost). On 27 of the 607 verified rear wheels in this catalog.
- Will not fiterror · Rear WheelRear axle mismatch: Frame is Boost 148x12 but Rear wheel hub is 142x12. On 26 of the 607 verified rear wheels in this catalog.
- Will not fiterror · Seatpost (rigid)Seatpost too big: Frame seat tube is 30.9mm but Seatpost is 31.6mm - a bigger post cannot fit a smaller tube. On 26 of the 70 verified seatpost (rigid)s in this catalog.
Hardtail shock, Rear Shock. 1024 more findings from the same check, on up to 2 of the 1025 verified rear shocks each.
Rear brake mount, Rear Brake. 87 more findings from the same check, on up to 6 of the 92 verified brakes each.
Headset lower, Headset. 60 more findings from the same check, on up to 1 of the 70 verified headsets each.
Headset upper, Headset. 40 more findings from the same check, on up to 1 of the 70 verified headsets each.
Bb shell, Bottom Bracket. 34 more findings from the same check, on up to 1 of the 63 verified bottom brackets each.
Udh, Rear Derailleur. 7 more findings from the same check, on up to 1 of the 75 verified rear derailleurs each.
Gearbox frame, Gearbox. 6 more findings from the same check, on up to 1 of the 6 verified gearboxs each.
Oem shock, Rear Shock. 5 more findings from the same check, on up to 1 of the 1025 verified rear shocks each.
Rear axle, Rear Hub. 3 more findings from the same check, on up to 3 of the 124 verified rear hubs each.
Seatpost diameter small, Seatpost (rigid). 2 more findings from the same check, on up to 22 of the 70 verified seatpost (rigid)s each.
Wheel config, Front Rim. 2 more findings from the same check, on up to 3 of the 75 verified rims each.
Wheel config, Front Tire. 2 more findings from the same check, on up to 21 of the 617 verified tires each.
Wheel config, 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.
Dropper diameter small, Dropper Post. 1 more finding from the same check, on up to 13 of the 350 verified dropper posts each.
Rear axle, Rear Wheel. 1 more finding from the same check, on up to 1 of the 607 verified rear wheels each.
Seatpost diameter, Seatpost (rigid). 1 more finding from the same check, on up to 4 of the 70 verified seatpost (rigid)s each.
Wheel config, Fork. 1 more finding 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 · ForkFork travel: 160mm exceeds the frame's rated max of 140mm. On 77 of the 490 verified forks in this catalog.
- Check before you buywarning · Rear TireRear tire clearance: 2.6in tire is wider than Surly Karate Monkey's 2.5in frame max for 29" wheels. On 59 of the 617 verified tires in this catalog.
- Check before you buywarning · ForkSteerer mismatch: Fork is Straight 1.125 (dual-crown) but Frame headset is Straight 1.125 (single-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 55 of the 490 verified forks in this catalog.
- Check before you buywarning · ForkFork travel: 170mm exceeds the frame's rated max of 140mm. On 52 of the 490 verified forks in this catalog.
- Check before you buywarning · ForkFork travel: 150mm exceeds the frame's rated max of 140mm. On 51 of the 490 verified forks in this catalog.
- Check before you buywarning · ForkFork travel: 180mm exceeds the frame's rated max of 140mm. On 42 of the 490 verified forks in this catalog.
- Check before you buywarning · ForkFork travel: 200mm exceeds the frame's rated max of 140mm. On 19 of the 490 verified forks in this catalog.
- Check before you buywarning · ForkFork travel: 190mm exceeds the frame's rated max of 140mm. On 16 of the 490 verified forks in this catalog.
Rear rotor max, Rear Rotor. 2 more findings from the same check, on up to 15 of the 177 verified rotors each.
Fork travel, Fork. 1 more finding from the same check, on up to 9 of the 490 verified forks each.
Rear tire frame, Rear Tire. 1 more finding from the same check, on up to 7 of the 617 verified tires each.
Open a variant in the builder to see the ones that apply to your own parts.
Worth knowing
- Worth knowinginfo · ForkHeadset: Surly Karate Monkey takes ZS44 upper / EC44 lower cups (S.H.I.S.) to mount the fork - many frames ship with one; pick one here if yours does not. On 490 of the 490 verified forks in this catalog.
- Worth knowinginfo · Dropper PostLong-drop post: the BikeYoke Divine 2.0 (185mm) needs deep seat-tube insertion - check the maker's insertion calculator for your Surly Karate Monkey frame size. On 3 of the 350 verified dropper posts in this catalog.
- Worth knowinginfo · Dropper PostLong-drop post: the BikeYoke Divine 2.0 (213mm) needs deep seat-tube insertion - check the maker's insertion calculator for your Surly Karate Monkey frame size. On 3 of the 350 verified dropper posts in this catalog.
- Worth knowinginfo · CranksetBottom bracket: Shimano CUES FC-U6000-1 uses a 24 mm spindle spindle - pair it with the right BB for this frame's BSA threaded 73 shell (BB usually sold separately). On 2 of the 98 verified cranksets in this catalog.
Bb advisory, Crankset. 96 more findings from the same check, on up to 1 of the 98 verified cranksets each.
Dropper insertion, Dropper Post. 88 more findings from the same check, on up to 1 of the 350 verified dropper posts each.
Open a variant in the builder to see the ones that apply to your own parts.
$999.00 MSRP
What the maker states
- Wheel configs
- Frame takes 29" and 27.5" wheels
- Maximum fork travel
- Approved for a fork up to 140 mm of travel
- Rear axle
- Boost 148x12
- Bottom bracket
- Bottom-bracket shell BSA threaded 73
- Head tube upper
- Upper head-tube bore ZS44/28.6 (S.H.I.S.)
- Head tube lower
- Lower head-tube bore EC44/30 (S.H.I.S.)
The rest of what the maker states9 stated·27 not published
- Seatpost diameter 30.9 mm.
- Rear rotor up to 203 mm (maker-stated maximum).
- The maker does not state a UDH dropout.
- Fits a Straight 1.125 (single-crown) head tube.
- Brake mount I.S. mount.
- Hardtail frame.
- Sold as a frame only.
- Tire up to 2.5 mm on 29" and 3 mm on 27.5" (maker-stated maximum).
- Steel construction.
27 further fields the checker looks for are not published by Surly, so we leave them blank rather than estimate them, and those 27 checks stay silent on this frame. They are minimum rear rotor, shock eye, shock stroke, shock mount, travel, alt shock strokes, shock stroke by size, travel by stroke, minimum fork travel, design fork travel, fork travel hard, coil approved, drive mode, dropout type, gearbox mount, belt drive, udh unstated, udh retrofit kit, maximum tire, maximum tire mm, maximum tire basis, head tube upper alts, head tube lower alts, headset included, headset included model, headset included part and maker shocks. Each is recorded as “not stated by the maker (not checked)”.
Source: the maker’s page. Last checked 2026-07-30.
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) Worth knowing
- 9point8 Fall Line (Dropper Post) Will not fit
- 9point8 Stout (31.8, 30mm) (Stem) No conflicts found
- ACID SLX 30 front (Front Wheel) No conflicts found
- ACID SLX 30 rear (Rear Wheel) No conflicts found
- Acros ZS44/ZS56 (Headset) Will not fit
6 of 1701 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.