KTM 350 SX-F · 11->15
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KTM 350 SX-F motorcycle
The KTM 350 SX-F occupies the sweet spot in modern MX fours: a roughly 350 cc race single that bridges 250 agility and 450 torque for riders who want lap-speed without full big-bike weight. It is a closed-course machine first — starts, rhythm sections, and sustained track pace.
Interest centers on gate response, pipe kits, and Evo fueling for 2011–2015 350 SX-F race bikes.
Engine, chassis, and what riders care about
When people look up the 350 SX-F engine and chassis, they usually want real-world behavior: throttle response, fueling with common upgrades, and how the motorcycle feels in its intended use. The details below match how this model is listed in our Rapid Bike fitment catalog.
- Engine family: Off-road 4-stroke single (SX-F) (Approx. 350 cc; fitment listing: 350 cc)
- Motorcycle type: Motocross / closed-course off-road motorcycle
- Strengths: 350 MX balance of power and weight; Strong track mid-range; Race-bred SX-F chassis
- Common rider goals: Cleaner clutch fueling off the gate; Mixture with race exhaust; Consistent maps under repeated heat
Model years on this page: 2011–2015 (11→15)
In our Rapid Bike catalog the KTM 350 SX-F appears in the following generation window(s): 2011–2015 (11→15). Even when the marketing name stays the same, wiring looms, connectors, and kit part numbers can change between windows. Always select the year / version pill that matches your motorcycle before choosing a module.
Rapid Bike kits for the KTM 350 SX-F
Rapid Bike add-on ECUs install beside the stock ECU. They do not replace the OEM control unit. On a motorcycle like the 350 SX-F, that approach is ideal when you want better fueling control, more consistent throttle feel, or additional map options without a full standalone ECU project.
Rapid Bike modules help refine how the motorcycle delivers its power: mixture quality in closed loop, injection map behavior, and on higher kits ignition-related control. That matters when altitude, temperature, load, or aftermarket exhaust / intake setups change demand.
Which Rapid Bike products fit this motorcycle
- Years 11→15: Rapid Bike Evo
After you pick your year range, open the matching kit product and confirm the Item Kit and Wiring codes for your exact window. Add to cart with brand, model, and year selected so the order carries the correct fitment details.
KTM 350 SX-F — motorcycle identification
| Field | Detail |
|---|---|
| Brand | KTM |
| Model | 350 SX-F |
| Also searched as | KTM 350 SX-F, 350 SXF, motocross 350 four-stroke |
| Engine | Off-road 4-stroke single (SX-F) |
| Displacement (nominal) | Approx. 350 cc |
| Displacement (fitment listing) | 350 cc |
| Segment | Motocross / closed-course off-road motorcycle |
| Year windows in this shop | 11→15 |
Motorcycle technical context for owners and searchers
The KTM 350 SX-F is researched for engine character, real-world manners, and generation-specific fitment. Riders typically look for:
- Start response: throttle cleanliness leaving the gate
- Lap consistency: mixture as the bike heats through motos
- Exhaust kits: common SX-F cans and AFR drift
- Fitment years: 2011–2015 Rapid Bike Evo
On 2011–2015 350 SX-F bikes, Rapid Bike Evo is used to refine track fueling and maps beside the OEM ECU.
Rapid Bike fitment matrix for this model
| Year / version | Compatible Rapid Bike products | Notes |
|---|---|---|
| 11→15 | Evo | Evo coverage listed |
Rapid Bike module details (matched to this motorcycle)
- Rapid Bike Evo — injection map management, real-time lambda control, and self-adaptive fueling. The balanced street / travel option where listed.
Signals and features that matter on this motorcycle
- Injection (Inj): multipoint fuel management relative to the stock strategy
- Self Adapt: adaptive injection via the stock O2 pathway (module dependent)
- O2 modulation: closed-loop mixture quality under changing load
Install and validation checklist
- Confirm your motorcycle year against the 11→15 pill on this page.
- Open the chosen Rapid Bike product and verify Item Kit + Wiring codes for that year window.
- Install using the kit manual; keep connectors clean and route the loom away from heat and moving parts.
- Validate on a controlled ride: idle, low-gear tip-in, mid-range roll-on, and steady cruise in your typical use.
- If you change exhaust, intake, or regularly ride at very different altitudes, reassess maps / adaptive behavior instead of assuming the first setup stays ideal forever.
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Software and manuals for this motorcycle will appear here when they are published.