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2019 · Supermoto · Buyer's Guide
The Backroad Hooligan Single
This is KTM's street supermoto in its most honest form: a 692 cc liquid-cooled single making 75 hp and 54 lb-ft, wrapped in a chassis that weighs almost nothing and turns on command. What separates this generation is how civil the LC4 has become without going soft. Ride-by-wire maps meter the power cleanly, MTC sits behind it as a safety net, and cornering ABS with ride modes comes standard. WP APEX suspension is fully adjustable at both ends. In a class built on lean clearance and reflexes, it scores a perfect 10 on the first and close to it on the second.
It rides the way it looks, only faster and with more usable range than the styling suggests. The single pulls cleanly from low revs, so backroads don't turn into a gearbox workout, and the 320 mm front brake and 17-inch rubber let you carry real pace. Running costs stay low and the aftermarket is deep, which matters on a bike people modify. It's built for riders who want to work the machine physically rather than sit on it. The honest caveat: 35.0 in of seat height rules out a lot of people, and there's a safety recall on the clutch slave cylinder (NHTSA 21V-792) covering 2018 to 2020 bikes that you need to confirm has been done.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 75 hp (55 kW) |
|---|---|
| Torque | 54 lb-ft (73 Nm) |
| Displacement | 692 cc |
| Engine | Single-cylinderMotorcycles With Single-Cylinder Engines → |
| Cooling | Liquid-cooled |
| Gearbox | 6-speed |
| Final drive | Chain |
| Fork | Upside-down (USD) |
| Front brake | 320 mm |
| Front tire | 120/70-17 |
| Rear tire | 160/60-17 |
| Wheelbase | 58.1 in (1475 mm) |
| Ground clearance | 9.4 in (238 mm) |
| Front travel | 8.5 in (215 mm) |
| Rear travel | 9.4 in (240 mm) |
| Seat height | 35.0 in (890 mm) |
| Dry weight | 324 lb (147 kg) |
| Fuel capacity | 3.5 gal (13.2 L) |
Equipment check
Chassis
Drivetrain
Safety
You notice the size of it before anything else. The bike is narrow and tall, the bars are wide, and the whole thing sits under you like a big dirt bike that took a wrong turn at the tire shop. Get moving and the sound is pure single, hard-edged and mechanical, with enough thump to keep you entertained at legal speeds. Vibration is present but never punishing. What the bike wants is a rider who moves: weight the outside peg, slide your hip, change your line halfway through a bend. Because it weighs so little, all of that costs almost no effort. The Continental SM2 rubber gives you confidence to lean on early, well before the tires are properly warm. At real road pace you're not managing the motorcycle, you're steering it with your body, and that's the whole appeal.
My own 0–100 score for this bike against the class, area by area — the marker on each bar is the class average.
Point it and it's already changing direction. There's no lag between what I ask and what the front does, and the faster I link corners together, the better the geometry likes it. Credit the Continental SM2s too: they hook up before there's any heat in them, and on track they work with the chassis rather than fighting it. The catch is corner entry. All that suspension travel keeps the bike moving underneath you, and that nervousness on the way in never dialed out for me, no matter what I tried with the setup.
This is the part I keep coming back to. Standing still it wears its radical character right on the outside, all hard edges and menace. Then you ride it and the speed simply arrives, with far less struggle than the styling warns you about. I covered ground faster, and more easily, than anything that aggressive has any right to allow. The distance between how confrontational it looks and how approachable it turns out to be in the saddle is a big part of what makes it so compelling.
This is the most finished part of the bike. I could haul it down hard with the machine already laid over and it stayed composed, no drama, no hint of instability. Feel at the lever is precise enough that I set entry speed by touch rather than guessing where the limit sits, which is exactly what trail-braking demands. Switch the ABS off for track work and the full bite is yours. Power, feedback, and composure under load, all three of them there.
Big singles usually punish you for asking too early. This one doesn't. I could lug it in first or short-shift into second and third and still find real drive waiting under the throttle, with no stumble, no dead spot, nothing flat through the mid-range. The power tracks my wrist instead of arriving in a lump. From one cylinder this size, that kind of linearity is genuinely rare, and it means I stop micromanaging the throttle and just ride.
Comfort on this bike isn't about padding. It's built for a rider who keeps working, weighting pegs, sliding across the seat, trimming the line mid-corner, and the wide bars give you the leverage to do all of it. With so little weight under you, that constant repositioning costs almost nothing over a long ride. You're driving it, not sitting on it. The wall is the saddle. It's tall and makes no apology, so shorter riders should throw a leg over one before any money changes hands.
Clutch slave cylinder failure
The bellow-style gasket can be damaged during assembly, leading to clutch failure and inability to disengage. KTM issued a safety recall (NHTSA 21V-792) for the affected 2018–2020 models.
Rocker arm bearing wear
Premature wear of the rocker arm bearings can lead to engine noise and potential damage. Well-known in the LC4 platform, though incidence on the updated 2019+ engine is unclear.
Fuel pump / filter issues
Faulty fuel pumps or clogged filters can cause stalling, hesitation, or poor starting. Related to the fuel system common across LC4 models.
Electrical gremlins
Weak battery, faulty wiring, or corroded connections can lead to intermittent starting problems or electrical failures. More common on earlier models but still reported.
Counter shaft seal leak
Premature seal leakage at the output shaft, sometimes occurring within the first few rides. Reported on some 2019 examples.
Where this KTM 690 SMC R pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.
Power
Torque
Displacement
Seat height
Forget spec-sheet bragging. Here's who the 690 SMC R is actually built for.
For Angeles Crest and everything like it, this is close to ideal: it changes direction faster than anything with two seats and never runs out of lean angle. Just accept the busy front end on turn-in.
Made for Angeles Crest Highway · Coronado Trail Scenic Byway · Big Sur Coast Highway
Tight, repetitive, technical corners are exactly where the light handling pays. It rewards precise body input over horsepower, so your skill shows. The ride out from Atlanta or Knoxville is the tax you pay.
Made for Tail of the Dragon · Back of the Dragon · Blue Ridge Parkway
Brilliant on the Twisted Sisters, harder work on the long straight roads that get you there. If your weekend is mostly corners, buy it. If it's mostly miles, the 3.5 gal tank will annoy you first.
Made for Texas Hill Country · Texas Hill Country BDR-X · Twisted Sisters
If you're cross-shopping the older generation, here's what changed.
Previous generation · 2014–2018
Street Weapon, No Apologies
Compare to the previous model →If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.
Any price note compares both bikes at the same age — the youngest age both have on the used market — against this KTM 690 SMC R. “cheaper/pricier” is what that bike costs second-hand, not how worn it is.
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The City Supermoto With Soul
~$500 cheaper used than this bike at 3 yr
Competitor · 2019
Pure Hooligan, Razor Sharp
Roughly $3,200 pricier used than this bike at 7 yr
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Razor Handling, Featherweight Frame
Roughly $2,200 cheaper used than this bike at 1 yr
Compare it with every bike that shares the same spec or equipment.