390 Duke, year one — protection before personality
2023 KTM 390 Duke — First bike, first year: protection and comfort before anything chasing speed, all of it under a grand.
We put this build together from what riders recommend — prices verified Sep 2026.
- R&G Aero frame slidersTook a zero-mph gas-station drop in month two and turned it into a non-event. Should have been fitted before the first ride.$140
- 390 Duke 2017–23 radiator guardThe 390's radiator hangs low and the owner forums are full of stone-strike stories. Cheap insurance against a not-cheap repair.$90
- Evotech Performance tail tidyCleans up the rear plate hanger. Plug-in wiring, stock parts boxed for resale.$200
- Cool Covers seat coverStock seat quits at 45 minutes, and no foam kit I found fits the 390, so 8 mm of spacer mesh goes over it.$110
- Unbranded adjustable shorty lever pairThe cheap ones. A year in, they work fine — the adjustability mattered more than the brand for my small hands.$35
- Eazi-Grip tank gripsBought because every list includes them. Honestly a smaller difference on this bike than the seat was — see below.$60
- Quad Lock motorcycle handlebar mount + vibration dampenerNavigation for a new rider learning routes. Do not skip the dampener on a single — vibration kills phone cameras.$75
- Universal rear paddock standChain cleaning and lubing every couple of weeks. The least exciting purchase here and the most used.$100
How it came together
This is my first motorcycle, so this build sheet is really a list of things the forums told me to do, ranked by how much I listened. The rule I set myself: year one is protection and comfort only — nothing engine-side, nothing that makes the bike faster than my judgment. The 390 makes a new rider plenty busy as delivered.
The protection paid for itself in month two: stopped at a gas station, foot found a diesel patch, and the bike went down at zero miles per hour. Crash protectors took the hit — total damage was my ego and a scuffed bar end. The radiator guard is the other 390-specific one: the radiator sits low and forward and the owner community reports stone strikes often enough that I treated the guard as insurance, not decoration.
Comfort is the part nobody romanticizes. The stock seat is fine for 30 minutes and a plank after 45, and no foam kit I found fits this bike, so it wears an 8 mm spacer-mesh cover; the phone mount (with a vibration dampener — singles shake, and camera lenses hate it) handles navigation while I learn routes. Nothing here makes the bike faster, and that was the point: protection and comfort, all of it under a grand.
Shop this build
Boxed links go straight to a product, at the price we saw on the date shown. The rest are retailer searches. Most of these parts are model-specific, so confirm the exact part number for your year, generation and market before you buy.
| Part | Typical price | Where to buy |
|---|---|---|
| R&G Aero frame slidersCrash Protection | $140 | |
| 390 Duke 2017–23 radiator guardCrash Protection | $90 | |
| Evotech Performance tail tidyTail Tidy & Billet | $200 | |
| Cool Covers seat coverRearsets | $110 | |
| Unbranded adjustable shorty lever pairLevers | $35 | |
| Eazi-Grip tank gripsBodywork | $60 | |
| Quad Lock motorcycle handlebar mount + vibration dampenerTail Tidy & Billet | $75 | |
| Universal rear paddock standDrivetrain | $100 |
Some links may earn Unstocked a commission at no cost to you. Prices shown are typical street prices — always verify fitment and price at the retailer. Model-specific parts (exhausts, rearsets, bodywork) can run 2–3× between bikes — the sheet shows a typical figure.
Ride your version
Open this parts list in the build composer, swap what you’d change, and share your own link.