In short: a supermoto runs 17-inch rims front and rear – usually 3.5×17 front and 4.25 to 5.0×17 rear. Add road tyres, usually a bigger front brake disc and a few small parts. This guide explains what to look for when buying, what a conversion costs and which mistakes to avoid.
Why 17 inch?
Enduro and motocross bikes come with 21-inch front and 18- or 19-inch rear wheels – great off-road, but too big and too narrow for tarmac. Supermoto rims are smaller (17 inch) and much wider, so they take wide road tyres, the bike turns in quicker and has far more grip in corners.
Which rim width do I need?
- Front: 3.5×17 is standard – typically with a 120/70-17 tyre.
- Rear 4.25 or 4.5×17: a bit lighter, for narrower rear tyres (e.g. 150/60-17).
- Rear 5.0×17: the sporty choice for wider rear tyres (e.g. 160/60-17).
Which tyre size is approved for which rim width is set by the tyre manufacturer – check before buying. On our Vario rim sets you can choose a 4.5×17 or 5.0×17 rear rim.
What to look for
- Hubs: CNC-machined aluminium hubs that match axle, brake disc and sprocket of your model.
- Rim rings: high-strength aluminium (e.g. 7050 T6) handles jumps, kerbs and wheelies better.
- Spokes: reinforced stainless spokes (e.g. 4 mm) stay tensioned and don't rust.
- Bearings & spacers: ideally pre-installed so the wheels are ready to fit.
- Fitment: axle sizes and offsets differ by brand, model and year – always have fitment confirmed before ordering.
Do I need a bigger brake disc?
You brake much harder on tarmac, so most supermotos run a 320 mm oversize front disc with a matching caliper adapter. Note: the original disc does not fit every supermoto rim on every model – e.g. Sherco, older Suzuki and Yamaha models or Sur-Ron. See our brake discs and caliper adapters; with Vario rim sets you can add the 320 mm disc incl. adapter directly.
What else is part of the conversion?
- Tyres: supermoto or road tyres – we can mount them for you. See supermoto tyres.
- Gearing: many riders change the rear sprocket for road use – see chain kits.
- Side stand: smaller wheels lower the bike, so the side stand often needs shortening.
What does a supermoto rim set cost?
Prices range from a few hundred euros for cheap replicas to well over €1,500 for premium brands. Our Vario supermoto rim sets (front + rear incl. hubs, spokes, bearings and spacers) start at €669. Ready-made colour sets ship within 24 hours if in stock; a 100% custom set is made to order in about 4–8 weeks.
Are supermoto rims road legal?
That depends on the rim and your country. Our Vario rim sets are supplied without TÜV certificate or ABE and are intended for track, racing and off-road use. For road use, check approval with your local authority first.
FAQ
Do supermoto rims fit every enduro?
Very many – KTM, Husqvarna, GasGas, Beta, Yamaha, Suzuki, Sherco, Fantic and more. Model and year matter, so send us both before ordering.
Can I fit them myself?
Yes. Bearings and spacers are pre-installed; you only transfer brake discs and sprocket. We can pre-mount tyres on request.
Can I return the rims?
Custom-made rim sets are excluded from the right of withdrawal. Our standard return policy applies to stock items.
Supermoto rims by brand
Alle Preise in Euro sind Endpreise zzgl. Versandkosten. Kleinunternehmer gem. § 6 Abs. 1 Z 27 UStG – es wird keine Umsatzsteuer ausgewiesen.
All prices in EUR are final prices plus shipping. No VAT charged (small business exemption, § 6 (1) 27 Austrian VAT Act).