2007–2009 · Supermoto · Buyer's Guide
The Tarmac-Ready Single Weapon
The 690 Supermoto is built around KTM's 654cc LC4 single, a liquid-cooled big-bore that makes 63 hp and 48 lb-ft yet stays smoother at speed than a thumper this size has any right to be. Wrap that in a lightweight steel trellis frame, wide bars, a fully adjustable WP fork and shock, and radial Brembo brakes, and you get a road-legal supermoto with genuine bite. The slipper clutch lets you bang down through the 6-speed without the rear stepping out. This is a focused tool for cutting corners, not a do-everything commuter.
On the road it rewards commitment. It steers with almost no effort, holds a tight line, and carries so much lean clearance you run out of nerve long before you run out of bike. It suits an experienced rider who wants attack over comfort and treats the twisties as the whole point. The honest caveat is ownership. The 2009 fork-crack recall is the serious one, and you also live with rocker-arm bearing wear, a fuel pump and filter that can clog, and water finding its way into the instrument cluster and wiring. Buy one that has been looked after by someone who understood it.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 63 hp (46 kW) |
|---|---|
| Torque | 48 lb-ft (65 Nm) |
| Displacement | 654 cc |
| Engine | Single-cylinder |
| Cooling | Liquid-cooled |
| Gearbox | 6-speed |
| Final drive | Chain |
| Fork | Upside-down (USD) |
| Front brake | 300 mm |
| Front tire | 120/70-17 |
| Rear tire | 160/60-17 |
| Ground clearance | 11.0 in (279 mm) |
| Seat height | 34.4 in (875 mm) |
| Fuel capacity | 3.6 gal (13.5 L) |
| Top speed | 115 mph (185 km/h) |
| Fuel economy | 33 mpg (US) |
Equipment check
Chassis
Drivetrain
Thumb the starter and the LC4 settles into that hard, mechanical single-cylinder beat that gives the bike half its personality. There is real texture through the pegs and bars at idle and low revs, the kind of honest vibration that fades into the background once you are moving but never fully disappears. You sit tall and perched, 34.4 inches up, with wide bars that put your hands out where you can lever the front around. The riding position is all business: knees high, weight forward, eyes hunting the next apex. At a relaxed pace it fidgets and asks what you are waiting for. Around town it threads gaps like a bicycle, light at the bars and easy to flick. It is loud, physical, and constantly talking to you. Long stints in the saddle test your patience before they ever test the bike.
Over the years I've kept an ear on what 690 Supermoto owners actually tell me. It comes in through long forum threads, paddock conversations, owner chats, and the messages riders send me directly after living with one for a while. The pattern that emerges is consistent. The riding wins people over almost immediately, and the gripes cluster tightly around reliability and setup.
Riders consistently come back to the engine first. They describe strong low-end grunt and a wide, usable spread of power from the big single, the kind of pull that makes the bike feel quick everywhere you point it. The braking and suspension hardware draws steady praise too, with many owners singling out the high-end feel and strong performance of the front brake and the adjustable fork and shock straight off the showroom floor. And almost everyone lands on the same word for the handling: light, nimble, sharp enough to slice through traffic and carve a twisty road. Owners often compare it to a big dirt bike let loose on asphalt.
The most common complaint by a wide margin is electrical and fuel-system reliability. Owners report failing fuel pumps, injector trouble, and wiring that corrodes, especially on bikes used in the wet, and the digital instrument cluster is known to take on moisture and quit. Close behind, plenty flag rocker arm bearings that give out on early engines, sometimes carrying expensive damage with them. A few other themes recur. The throttle can be jerky at low revs, which makes smooth city riding fiddly, and the standard suspension, comfortable at a relaxed pace, bottoms out once you brake hard or push on track. One smaller note from riders who've tried touring two-up: the rear subframe is considered weak and can flex under a passenger or a heavy load.
Front fork cracks (recall)
KTM recalled 237 2009 690 Duke and SMC motorcycles because the front forks could develop cracks, potentially leading to fork breakage and loss of control. Affected units require fork replacement.
Rocker arm bearing failure
Premature wear of the rocker arm bearings can cause loud valvetrain noise and, in severe cases, seized rockers, damaged cams, and metal debris in the oil. Replacing rocker arms at each valve clearance check is common preventive maintenance.
Fuel pump and filter clogging
The in-tank fuel filter and pump can clog prematurely, leading to lean running, stalling, or a no-start condition. Many owners replace the pump and filter proactively.
Wiring loom corrosion
Water ingress around the headlight and beak area can cause corrosion in the wiring loom and connectors, leading to intermittent electrical faults, warning lights, or starting issues. Sealing and greasing connectors is advised.
Instrument cluster failure due to water ingress
Condensation forms inside the digital instrument cluster after riding in wet conditions, eventually causing display or complete failure. The clocks are not well sealed.
Output shaft oil seal leak
The output shaft oil seal can fail, causing an oil leak at the front sprocket area. Replacement of the seal is required; if caught early it’s a minor fix but can lead to oil contamination of the chain.
Where this KTM 690 Supermoto pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.
Power
Torque
Displacement
Top speed
Seat height
Forget spec-sheet bragging. Here's who the 690 Supermoto is actually built for.
If Angeles Crest is your weekend, this is your weapon. It flicks, holds a line, and leans further than your nerve. Just respect the maintenance and the tall seat at stoplights.
Made for Angeles Crest Highway · Coronado Trail / US 191 · Highway 1 / Big Sur
The Twisted Sisters will love how fast this thing changes direction. It is a focused single, not a touring mile-eater, so plan your fuel stops and keep the rides tight and sharp.
Made for Austin / Texas Hill Country · Twisted Sisters · Austin / Handbuilt Motorcycle Show
Tail of the Dragon is exactly its habitat: slow, technical, repeatable corners where light steering and deep lean beat raw speed. A skill rider's tool, as long as you keep it healthy.
Made for Back of the Dragon · Blue Ridge Parkway · Cherohala Skyway
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 Supermoto. “cheaper/pricier” is what that bike costs second-hand, not how worn it is.
