KTM 1290 Super Duke R (MY2014) vs Triumph Street Triple 765 RS (MY2017)

1290 Super Duke R

Strengths

• Lean Clearance For Days
• Built Right For Tall Riders
• Electronics That Enable, Not Dull
• It Holds Up Long Term
• Brembo M50 stopping power

Trade-offs

• Stock Pipe Sounds Lifeless
• Nothing Between You And The Wind
• Long Sweepers Expose The Chassis
• Insurance Bites Younger Buyers
• Aggressive ergonomics, limited long-distance comfort

Street Triple 765 RS

What owners say

Strengths

• Exceptional engine character
• Class-leading handling and agility
• Build quality and finish
• Premium braking performance

Trade-offs

• Bar-end mirror vibration (RS only)
• Firm, track-oriented suspension
• Snatchy low-speed throttle response
• Heat in traffic
• TFT readability issues

1290 Super Duke R

• Brembo radial master cylinder plastic piston cracking — recall (NHTSA Recall 18V-033) Recall 18V033000 The plastic (PPS polymer) piston in the front master cylinder could crack or break under heavy load, hard ABS engagement, or after a tip-over, leading to loss of front-brake function. Remedy: dealer replaces the plastic piston with an aluminum piston.
• Fuel tank threaded-insert leak — recall (NHTSA Recall 15V-441) Recall 15V441000 Threaded inserts at the rear of the plastic fuel tank could leak fuel due to a coating-process irregularity in tank manufacture. Risk of fuel ignition if combined with an ignition source. KTM notified affected owners; remedy was inspection and sealing of the inserts, or tank replacement where an existing leak was found.
• Radiator top-rail seam splitting The top-right (sometimes top-left) seam of the radiator splits along the upper rail. Owners attribute the failure to radiator-mount design and stress transfer from the freely-rotating exhaust clamp. Symptom: visible coolant weep from the upper radiator seam, eventual coolant loss and overheating risk.
• Clutch slave cylinder rubber-seal swelling and air ingress The OEM clutch slave cylinder rubber seal swells over time, causing internal corrosion and air ingress in the hydraulic line. Symptoms: milky or dark clutch fluid, hard-to-find neutral, hot-clutch fade, repeated bleeding required. Re-sealing rarely lasts; owners typically replace with billet aftermarket units (Oberon, Rottweiler).
• Hydraulic cam chain tensioner loses pressure The factory cam chain tensioner is hydraulic and runs on engine oil pressure. It can bleed down or fail to hold pressure, which leaves the timing chain slack. The usual symptom is a ticking or rattling noise from the cam chain area, most noticeable at idle or just after a cold start before oil pressure builds.
• Fuel pump failure — low fuel pressure, stalling, no-start "Fuel Pump Failure" warning, bike cuts out, hangs at approximately 5,500 rpm, will not restart. KTM identified the fuel filter and/or pump motor as the cause of low fuel pressure; a replacement kit (seals, gaskets, filters, motor) is supplied by the dealer.
• Rear wheel bearing failure due to swingarm water ingress The Gen 1 single-sided swingarm has no internal drain hole. Water collects inside the swingarm, corroding the rear wheel hub bearings. Symptoms: vague "steering" feel from the rear wheel under on/off throttle. Owners frequently find a half-cup of water when removing the axle adjuster. KTM addressed this on the Gen 2 swingarm by adding a drain hole — a tacit confirmation of the Gen 1 design defect.
• Side-stand sensor failure — no-start or stalling Side-stand sensor fails — often a magnet-related fault contaminated by chain-area debris. Bike will not start or stalls when in gear. The 1290 sensor uses a 50% duty-cycle pulse, so a simple bypass requires a dedicated dongle (Rottweiler, Vanasche).
• Jerky on/off throttle transition at low rpm Snatchy on/off transition at 2,500–3,500 rpm, particularly noticeable in Rain mode. Stock fueling is lean for emissions compliance. Many owners install aftermarket fueling modules (Rottweiler, Power Commander) or apply ECU updates from the dealer; outcomes vary.
• Front fork seals develop weeping / "tide marks" The seals on the WP upside-down fork can start to weep over time. Oily tide marks show up on the fork tubes just below the seals. The leak tends to come on gradually with use rather than being present from new. If left alone, the seeping fork oil leaves a residue that collects road grime and slowly lowers the oil level in the affected leg.
• Front brake light switch error / brake light stuck on Omron switch on the Brembo master cylinder fails. "Front Brake Switch" error appears on the dash; brake light may be stuck on, or a fault code is logged. Wire-routing strain at the master cylinder is the documented cause. Some owners report MTC (traction control) faults as a downstream side effect.

Street Triple 765 RS

• TFT display total failure or partial failure The TFT instrument cluster can fail completely with a dead screen, or fail partially with white patches, dead pixels or flickering. Because the cluster is part of the immobilizer handshake, a total failure can stop the bike from starting. The cluster housing is bonded shut, so it can't be repaired at component level and the whole unit has to be replaced. Earlier model years of this generation are more prone to total failure. Later model years more often show partial white-patch failures. Known triggers include battery replacement or disconnection, moisture getting into the housing, and age. The manufacturer has replaced some units as a goodwill gesture but has not acknowledged a systemic defect.
• Catastrophic inlet valve head detachment An inlet valve head can separate from its stem and drop into the combustion chamber. The loose valve head then destroys the piston, the cylinder bore and the combustion chamber surfaces, and the engine fails outright. Failures have happened at moderate mileage with no warning, in different cylinders, and on more than one engine. Metallurgical analysis and dyno testing have not found a clear root cause. Across the wider fleet the failure appears to be very rare, but when it happens the engine is destroyed and the rear wheel can lock.
• Engine cutting out randomly while riding Multiple owners report the engine cutting out randomly while riding — including at constant speed, during braking, and after acceleration. Display stays on and no error codes are stored, making diagnosis difficult. Confirmed root causes across different cases include: faulty stator/pickup coil, dislodged fuel pump seal causing intermittent fuel delivery, and ECU map issues (resolved by dealer reflash). Affects primarily 2020 and 2022 models based on forum reports.
• Quickshifter intermittent failure and false neutrals The Triumph Shift Assist (TSA) quickshifter can exhibit intermittent failures, particularly on the 1st-to-2nd upshift, resulting in false neutrals or missed gears. Some units had a faulty quickshifter sensor that Triumph revised during production. Known remedies: ECU reset (battery disconnect + cycling through all gears), software reflash, and sensor replacement. The first oil change (from factory fill to service oil) reportedly improves shifting behaviour.
• Front brake disc warping or pad deposit causing pulsation Some owners report pulsation through the front brake lever, particularly during hard braking at higher speeds. Can be caused by actual disc warping or by uneven brake pad material deposits on the disc surface (more common). Cleaning discs and pads with acetone and a re-bedding procedure often resolves deposit-related pulsation. Some owners have had discs replaced under warranty.
• Stock bar-end mirrors vibrate excessively at speed The OEM bar-end mirrors on the RS model vibrate significantly at most engine speeds, rendering rearward visibility poor at higher speeds. This is one of the most commonly cited owner complaints and a near-universal first modification. Most owners replace them with aftermarket units (Rizoma, CRG, etc.). Note: this is an RS-specific issue — the R model uses conventional stalk mirrors that do not exhibit this problem.
• Oil weeping from alternator cover gasket Minor oil weeping from the alternator cover gasket is a widely reported issue. Dealers confirm "it happens on a lot of these bikes." Root cause is frequently undertorqued bolts from the factory — mechanics report bikes arriving for the first service with alternator cover bolts at a lower torque than specified. The leak is typically a slow weep (one drop after each ride) rather than a heavy drip. Oil levels usually remain stable. Retorquing the bolts to specification resolves the issue in most cases; some bikes require gasket replacement. Affects all trim levels (S/R/RS).
• Cam chain rattle/slap on cold startup The hydraulic cam chain tensioner can bleed down after the bike sits for extended periods (overnight or longer), causing a noticeable chain rattle on cold startup until oil pressure builds. Common to many Triumph triple engines. Aftermarket manual cam chain tensioners available as a permanent fix. Dealers report that many 765 engines develop tight exhaust valves, which can exacerbate perceived engine noise.