Performance Exhausts for KTM Motorcycles
KTM motorcycles are engineered with a performance intent that aftermarket exhausts amplify rather than simply add to. The Duke 390's track-derived single, the RC 390's race-spec chassis, and the Adventure range's capable off-road architecture all benefit from a lighter, freer-flowing exhaust — improving exhaust note, reducing tail weight, and improving flow for better mid and top-end performance.
At Rawtorque, we stock genuine exhaust systems from Red Rooster Performance and other proven brands for the KTM Duke 390, RC 390, 390 Adventure and 250 Adventure.
Slip-on vs Full System for KTM
- Slip-on — Replaces the muffler only. Immediate weight saving and a sharper, more aggressive note. Bolt-on fitment. For road use, a slip-on is the most common and practical choice.
- Full System — Replaces headers and muffler. Biggest gains in flow and weight. Works best paired with a high-flow BMC air filter and a FuelX Pro+ or PowerTRONIC V4 as a complete Stage 1 setup. Suited to track-focused RC 390 builds.
By Model
KTM Duke 390
The Duke 390's 373cc single has a strong stock note that a performance exhaust makes genuinely aggressive. A Red Rooster slip-on or full system gives the Duke a sharper, more focussed sound and drops meaningful weight from the tail. For a full Stage 1, pair with a BMC filter and PowerTRONIC V4.
Shop Duke 390 Exhausts | Duke 390 Stage 1 Kit
KTM RC 390
The RC 390 is the track-spec KTM, and the exhaust upgrade here is as much about weight reduction as sound. A full system paired with a FuelX Pro+ or PowerTRONIC and a BMC filter is the complete Stage 1 setup for RC 390 riders who want measurable track gains.
Shop RC 390 Exhausts | RC 390 Stage 1 Kit
KTM 390 Adventure
The 390 Adventure's exhaust upgrade serves two purposes: a stronger trail note and reduced tail weight that improves handling with a loaded setup. A slip-on suits most road-and-trail riders; a full system for those building a complete Stage 1.
Shop 390 Adventure Exhausts | 390 Adventure Stage 1 Kit
KTM 250 Adventure
The 250 Adventure's 248cc single benefits from a slip-on that gives it a stronger note and drops weight from the muffler position. A good standalone upgrade or the exhaust component of a Stage 1 setup.
Shop 250 Adventure Exhausts | 250 Adventure Stage 1 Kit
Building a KTM Stage 1
For measurable power gains on any KTM single, the exhaust works best as part of a three-part Stage 1 setup: high-flow BMC air filter + FuelX Pro+ or PowerTRONIC V4 + performance exhaust. The three parts work together — better intake airflow, better exhaust flow, and fuelling that matches both. Read the KTM air + fuel guide or browse all KTM accessories at Rawtorque.
Frequently Asked Questions
Do I need fuel tuning with a KTM exhaust?
For a slip-on, the stock ECU can cope on most KTM models. For a full system, a FuelX Pro+ or PowerTRONIC V4 is strongly recommended — the engine benefits fully from the improved exhaust flow only when fuelling is also optimised.
Which exhaust brand fits the KTM Duke 390?
Red Rooster Performance is the primary brand in our KTM exhaust range at Rawtorque. Check the product listing for exact fitment per generation — the Gen 3 Duke 390 has a different header configuration to earlier generations.
Does the Duke 390 and RC 390 exhaust interchange?
Both use the same 373cc engine, but the chassis and exhaust routing differ. Most slip-ons are model-specific. Check the product listing for confirmed fitment.
